1Z Oracle Weblogic Server 11g: System Administration I

Transcription

1 Oracle 1Z0-102 Oracle Weblogic Server 11g: System Administration I Version Demo

2 QUESTION 1 Which two statements are true about java EE shared libraries? A. A shared library cannot be deployed to a cluster. B. An application that is targeted to server1 can use a shared library that is targeted to server 2. C. Multiple versions of the same shared library can be deployed and be active at the same time D. A shared library is referenced through an application's deployment descriptor. Correct Answer: CD C: If more than one copy of mylibrary is registered, WebLogic Server selects the library with the highest specification version. If multiple copies of the library use the selected specification version, WebLogic Server selects the copy having the highest implementation version. D: A Java EE application can reference a registered shared Java EE library using entries in the application's weblogic-application.xml deployment descriptor. Reference: Referencing Shared Java EE Libraries in an Enterprise Application QUESTION 2 Refer to the Exhibit. You use the Start button in the administration console to start managed2 successfully. Which two statements must be true? A. Managad2 is part of a cluster. B. The Administration Server is running. C. Managed2 has applications deployed to it. D. The Node Manager for machine2 is configured and running. E. The Node Manager for the Administration Server machine is configured and running. Correct Answer: BD B: The administration server must be running. Note: A WebLogic Server administration domain is a logically related group of WebLogic Server resources. Domains include a special WebLogic Server instance called the Administration Server, which is the central point from which you configure and manage all resources in the domain. D: Node Manager is a WebLogic Server utility that enables you to start, shut down, and restart Administration Server and Managed Server instances from a remote location. Although Node Manager is optional, it is recommended if your WebLogic Server environment hosts applications with high availability requirements. A Node Manager process is not associated with a specific WebLogic domain but with a machine. You can use the same Node Manager process to control server instances in any WebLogic Server domain, as long as the server instances reside on the same machine as the Node Manager process. Node Manager must run on each computer that hosts WebLogic Server instances -- whether Administration Server or Managed Server -- that you want to control with Node Manager. A: We could not know if Managed2 is in a cluster or not. C: We could not know if Managed2 has deployed applications. QUESTION 3 Within your data center, the Administration and Managed Servers utilize a shared, central storage device, which server's access via NFS. In this scenario, your application files no longer need to be copied to servers across the network. Which server attribute allows you to override this behavior? A. Startup Mode B. Staging Mode C. Root Directory D. Listen Address Correct Answer: B The server staging mode specifies the default deployment mode for a server if none is specified at deployment time. For example, the server staging mode is used if you deploy an application or module using weblogic.deployer and you do not specify a staging mode. Reference: rstagingmode.html QUESTION 4 An EJB application is targeted to a cluster. Remote EJB clients can therefore take advantage of WebLogic Server's load balancing and failover capabilities. However, a proxy server exists between the clients and the cluster, which performs IP address translation. Which cluster attribute should you modify to ensure that load balancing and failover work correctly? A. Multicast Address B. Persistent Store C. Cluster Address D. Migration Basis

3 E. Replication Channel Correct Answer: C Note: Updating Proxy Service Configurations for an Expanded Cluster If your AquaLogic Service Bus configuration includes one or more proxy services that use JMS endpoints with cluster addresses, then you must also perform the following procedure using the AquaLogic Service Bus Console after adding the new managed server to the cluster: 1. In the Change Center, click Create to create a session. 2. Using the Project Explorer, locate and select a proxy service that uses JMS endpoints with cluster addresses. 3. At the bottom of the View Details page, click Edit. 4. If there is a cluster address in the endpoint URI, add the new server to the cluster address. 5. On the Edit a Proxy Service - Summary page, click Save. 6. Repeat step 2. through step 5. for each remaining proxy service that uses JMS endpoints with cluster addresses. 7. In the Change Center, click Activate. The proxy services are now configured for operation in the extended domain. Reference: edocs Home > BEA AquaLogic Service Bus 2.0 Documentation > Deployment Guide > Configuring a Clustered Deployment QUESTION 5 You run the default startmanageweblogic (.cmd in Windows) script as shown here: startmanageweblogic.sh server1 What does this do? A. It starts the administration server named server1, which is running at B. It starts the managed server named server1, which is running at C. It starts the managed server named server1 whose Node Manager is running at D. It starts the Managed Server named server1 whose Administration Server is running at :8001. Correct Answer: D A Managed Server is a WebLogic Server instance that runs deployed applications. It refers to the Administration Server for all of its configuration and deployment information. Usually, you use Managed Servers to run applications in a production environment. See step 4 and 5 below in particular: To use the WebLogic Server scripts to start Managed Servers: 1. Refer to Starting Servers: Before You Begin for prerequisite tasks. 2. If you have not already done so, create one or more Managed Servers. See Creating WebLogic Domains Using the Configuration Wizard or "Create Managed Servers" in the Administration Console Online Help. 3. Start the domain's Administration Server. 4. In a shell (command prompt) on the computer that hosts the Managed Server, change to the directory that contains the startmanagedweblogicscript: DOMAIN_NAME\bin\startManagedWebLogic.cmd (Windows) DOMAIN_NAME/bin/startManagedWebLogic.sh (UNIX) where DOMAIN_NAME is the directory in which you located the domain. By default, this directory is BEA_HOME\user_projects\domains\DOMAIN_NAME. 5. Enter one of the following commands: startmanagedweblogic.cmd managed_server_name admin_url (Windows) startmanagedweblogic.sh managed_server_name admin_url (UNIX) where managed_server_name specifies the name of the Managed Server and admin_url specifies the listen address (host name or IP address) and port number of the domain's Administration Server. For example, the following command uses startmanagedweblogic.cmd to start a Managed Server named mymanagedserver. The listen address for the domain's Administration Server is AdminHost:7001: c:\bea\user_projects\domains\mydomain\bin\startmanagedwe blogic.cmd mymanagedserver 6. For each Managed Server that you want to start, open a separate command shell and follow steps 4 and 5. If you are starting Managed Servers on another machine, log in to that machine (remotely or locally) and then follow steps 4 and 5. Reference: Starting Managed Servers with a Startup Script QUESTION 6 An application requires a JDBC data source, which you create in the domain. You name it but the administrator allot another domain name the same data source DatasourceB. Without modifying either domain, which is the best method to ensure that the application deploys successfully in both? A. Create a separate application archive to use with each domain.

4 B. Create a separate deployment plan file to use with each domain. C. Create and register a custom deployment listener. D. Modify the application code to determine the current domain. Correct Answer: B A WebLogic Server deployment plan is an optional XML document that you use to configure an application for deployment to a specific WebLogic Server environment, such as a domain. Reference: Deploying Applications To WebLogic Server, Configuring Applications for Production Deployment QUESTION 7 Identify three options for Keystores in a server's configuration. A. Demo Identity and Demo Trust B. Demo Identity and Java Standard Trust C. Java Standard Identity and Custom Trust D. Custom Identity and Demo Trust E. Custom Identity and Custom Trust F. Custom Identity and Command Line Trust Correct Answer: AEF Please refer to the screenshot below: F: Custom Identity and Command Line Trust are not valid choices. Reference: keystoretitle.html#attributes QUESTION 8 When installing Oracle Weblogic Server 11g with the graphical installer, which three statements are true? A. You must choose either a typical or a custom installation. B. You install under Microsoft Windows because the graphical installer is available only for Window C. You may create a new middleware home directory or choose an existing one. D. You must register for critical security updates. E. You may install a JDK or choose one that was previously installed. Correct Answer: ACE Tasks WebLogic Server Product Installation Procedure Step 1 - Obtain the appropriate installation file for your platform Step 2 - Complete the installation planning requirements Ensure that your system environment meets the requirements for the installation. Also determine your Oracle Middleware home directory, and product installation home directories. (C) When you are installing WebLogic Server, you are prompted to choose an existing Middleware home directory or specify a path to create a new Middleware home directory. If you choose to create a new directory, the installation program automatically creates it for you. Step 3 - Determine the appropriate installation mode for your situation Step 4 - Determine the type of installation (A) There are two types of installation Typical or Custom. The type of installation depends on the products and sub-components you want to install. Step 5 - Install the software Step 6 - Create a WebLogic domain E: The JDK selection screen. This screen is displayed only if you selected a Custom installation. It is not displayed if you are running an Upgrade installer. This screen displays a list of JDKs. This list contains JDKs that are available for (and common across) previous installations of all the selected WebLogic Server components. Select the JDK that you want to install with the product. B: There are different platforms on which Weblogic can be installed. Such as Windows, Linux, and UNIX. D: To receive updates you must register. However, you do not do that during the graphic installation phase. Note: You must have an active My Oracle Support account in order to download an Upgrade installer. You can also install patch releases using the Smart Update tool, which is included with WebLogic Server. Smart Update requires that you have an active My Oracle Support account. If a patch release or patch set is available for your current WebLogic Server installation, you can download an Upgrade installer from My Oracle Support. Upgrade installers let you install an available patch release or patch set onto an existing WebLogic Server installation. Reference: Oracle Fusion Middleware Installation Guide for Oracle WebLogic Server 11g Release 1, Running the Installation Program in Graphical Mode Reference: Oracle Fusion Middleware Installation Guide for Oracle WebLogic Server 11g Release 1, Installation Overview QUESTION 9 Each domain has a directory called servers that contains subdirectories for each server in the domain. Your domain has a managed server named managed1. When will the managed1 directory be created?

5 A. When the managed1 server is defined in the configuration Wizard B. When the domain is created C. When the administration server comes up for the first time D. When the managed1 server1 comes for the first time Correct Answer: D This directory is created when the server is started for the first time. QUESTION 10 Identify three properties required by the domain Configuration Wizard when creating a new domain. A. machine name B. Managed Server name C. domain startup mode D. domain name E. administrator username and password Correct Answer: CDE C: Choose the Startup Mode Specify the startup mode for your domain. Either Development or Production D: The Create WebLogic Domain window prompts you to specify the name and pathname for the domain, and initiate its creation. E: The Configure Administrator Username and Password window prompts you to specify a username and password to be used for starting the Administration Server. Reference: Creating WebLogic Domains Using The Configuration Wizard QUESTION 11 Which two statements are true about adding servers to a cluster? A. When you create a cluster, you must add at least one server to it. B. Only managed servers can be in a cluster. C. The administration server is automatically added to a new cluster. D. You must explicitly identify which servers belong to the cluster. Correct Answer: AB A cluster must include at least one server. A clustered is administered through an administration server, but the cluster consists of managed servers only. QUESTION 12 Consider a single JMS module that includes a connection factory as well as queue. Based on your system's requirements, the connection factory needs to be made available to all servers in the domain. The queue, on the other hand, can be targeted to only a single JMS server domain. What is the best way to achieve the desired JMS setup? A. Create two subdeployments within the JMS module. B. Target the JMS server to the JMS module. C. Target the JMS module to the entire domain. D. Replace the queue with a topic. Correct Answer: A A subdeployment is a mechanism by which JMS module resources (such as queues, topics, and connection factories) are grouped and targeted to a server resource (such as JMS servers, server instances, SAF agents, or a cluster). For example, you can group a connection factory with stand-alone queues or topics in a subdeployment targeted to a specific JMS server, which guarantees that all these resources are co-located to avoid extra network traffic. Another advantage of such a configuration would be if the targeted JMS server needs to be migrated to another WebLogic server instance, then the connection factory and all its connections will also migrate along with the JMS server's destinations. However, when stand-alone queues or topics are members of a subdeployment, a connection factory can only be targeted to the same JMS server. Reference: Oracle Fusion Middleware Oracle WebLogic Server Administration Console Online Help 11g Release 1, Configure subdeployments in JMS system modules QUESTION 13 Which three attributes are part of the configuration of an existing Managed Server and can be modified through the" administration console? A. name of the server B. the cluster it is in C. the machine it runs on D. its replication group E. whether it is in Development Mode or Production Mode F. that it should become the Administration Server for the domain Correct Answer: BCD B: Attribute label: Cluster

6 The cluster to which this server belongs. If set, the server will listen for cluster multicast events. This is a configurable attribute. C: Attribute label: Machine The WebLogic Server host computer (machine) on which this server is meant to run. This is a configurable attribute. D: Server --> Configuration --> Cluster A WebLogic Server cluster is a group of servers that work together to provide a more scalable, more reliable application platform than a single server. Use this page to specify a server's primary and secondary replication group, cluster weight, and the interface address used to handle multicast traffic. Attribute label: Replication Group Description: Defines preferred clustered instances considered for hosting replicas of the primary HTTP session states created on the server. A: Attribute Label: Name After you have created a server, you cannot change its name. Instead, clone the server and provide a new name for the clone. Note: An alphanumeric name for this server instance. This field will not accept spaces. Each server instance in your WebLogic environment must have a unique name, regardless of the domain or cluster in which it resides, or whether it is an Administration Server or a Managed Server. Within a domain, each server, machine, cluster, JDBC connection pool, virtual host, and any other resource type must be named uniquely and must not use the same name as the domain. F: There is no attribute within a server's configuration that designates it as an Administration Server or Managed Server. Instead, the first server instance that you start in a domain always functions as the Administration Server. Reference: BEA WebLogic Server 8.1 Documentation, Server --> Configuration --> General QUESTION 14 Which can be associated with multiple domains? A. Cluster B. Server Log C. Node Manager D. Administration Server Correct Answer: C A Node Manager process is not associated with a specific WebLogic domain but with a machine. You can use the same Node Manager process to control server instances in any WebLogic Server domain, as long as the server instances reside on the same machine as the Node Manager process. A: A cluster is part of a particular WebLogic Server domain. D: In each domain, one WebLogic Server instance acts as the Administration Server--the server instance which configures, manages, and monitors all other server instances and resources in the domain. Each Administration Server manages one domain only. If a domain contains multiple clusters, each cluster in the domain has the same Administration Server. Reference: Using Node Manager to Control Servers Reference: Understanding WebLogic Server Clustering QUESTION 15 Identify two supported methods of deploying a JMS module to a domain. A. Create a module by using the administration console. B. Load a module into the WebLogic database. C. Include a module file within a web application archive. D. Include a module file within an enterprise application archive. E. Define a module within an existing JDBC module. Correct Answer: AD A: Main Steps for Creating Packaged JMS Application Modules Follow these steps to configure a packaged JMS module: If necessary, create a JMS server to target the JMS module to, as explained in "Configure JMS Servers" in the Administration Console Online Help. Create a JMS system module and configure the necessary resources, such as queues or topics, as described in "Configure JMS system modules and add JMS resources" in the Administration Console Online Help. The system module is saved in config\jms subdirectory of the domain directory, with a "- jms.xml" suffix. Copy the system module to a new location, and then: Give the module a unique name within the domain namespace. Delete the JNDI-Name attribute to make the module application-scoped to only the application. Add references to the JMS resources in the module to all applicable J2EE application component's descriptor files, as described in Referencing a Packaged JMS Application Module In Deployment Descriptor Files. Package all application modules in an EAR, as described in Packaging an Enterprise Application With a JMS Application Module. Deploy the EAR, as described in Deploying a Packaged JMS Application Module. D: JMS application modules can be packaged as part of an Enterprise Application Archive (EAR), as a packaged module. Packaged modules are bundled with an EAR or exploded EAR directory, and are referenced in the weblogic-application.xml descriptor. The packaged JMS module is deployed along with the Enterprise Application, and the resources defined in this module can optionally be made available only to the enclosing application (i.e., as an application-scoped resource). Such modules are particularly useful when packaged with EJBs (especially MDBs) or Web Applications that use JMS resources. Using packaged modules ensures that an application always has required resources and simplifies the process of moving the application into new environments. Reference: Packaging JMS Application Modules In an Enterprise Application QUESTION 16 Which statement is true about the java Node Manager? A. It runs on Windows not on Linux B. In its secure form, it uses one-way SSL. C. It does not use the nodemanager.domains file, whereas the script-based Node Manager. D. Unlike the script based Node Manager, it should not be run as an operating system service Correct Answer: B

7 Node Manager security relies on a one-way SSL connection between the client and server. Reference: Oracle Fusion Middleware Oracle WebLogic Server Administration Console Online Help 11g Release 1, Configuring Java-based Node Manager Security QUESTION 17 Which two statements are true about a WebLogic domain? A. It is the basic administrative unit of WebLogic Server. B. It is an optional administrative construct to organize groups of WebLogic C. Administration Servers are defined within a domain, but Managed Servers D. You must first have a domain to define a WebLogic Server cluster. E. Every domain has one Administration Server and at least one managed server Correct Answer: AD A: A domain is the basic administration unit for WebLogic Server instances. D: To define a WebLogic Server cluster there must be a domain: Note: Before you start the Managed Servers in a domain, start the Administration Server. When you start a standalone or clustered Managed Server, it contacts the Administration Server for its configuration information. In this way, the Administration Server operates as the central control entity for the configuration of the entire domain. Reference: Configuring and Managing WebLogic Server QUESTION 18 Which two statements are true about multicast communication within a cluster? A. Multicast can be used for cluster heartbeat messages. B. Multicast is used to replicate session state between servers. C. Multiple clusters can share the same multicast address and port. D. You may disable multicast on individual cluster members. E. Multicast traffic is often limited to a single subnet. Correct Answer: AE A: WebLogic Server instances in a cluster communicate with one another using two basic network technologies: * IP sockets, which are the conduits for peer-to-peer communication between clustered server instances. * IP unicast or multicast, which server instances use to broadcast availability of services and heartbeats that indicate continued availability. E: In many deployments, clustered server instances reside within a single subnet, ensuring multicast messages are reliably transmitted. However, you may want to distribute a WebLogic Server cluster across multiple subnets in a Wide Area Network (WAN) to increase redundancy, or to distribute clustered server instances over a larger geographical area. Reference: Using WebLogic Server Clusters, Communications In a Cluster QUESTION 19 Identify two true statements about an Oracle WebLogic Server JMS Connection Factory. A. A default JMS Connection Factory exists and is named weblogic.jms.connections B. A Connection Factory can be targeted to only one WebLogic Server. C. A JMS Connection Factory's Default Priority and Default Time-to-Live attribute cannot be modified after the Connection Factory is created. D. A JMS Connection factory can be created as a system module resource within the administration console. Correct Answer: BD A: WebLogic JMS defines two default connection factories, which you can look up using the following JNDI names: weblogic.jms.connectionfactory weblogic.jms.xaconnectionfactory C: Both Default Priority and Default Time-to-live can be changed: Default Priority: This attribute is dynamic. It can be changed at any time. However, changing the value does not affect existing connections. It only affects new connections made with this connection factory. Default Time-to-Live: This attribute is dynamic. It can be changed at any time. However, changing the value does not affect existing connections. It only affects new connections made with this connection factory. Reference: Programming WebLogic JMS, Understanding WebLogic JMS QUESTION 20 In WLST, you enter the shutdown () command with no arguments. Which statement is true in this case? A. The server you are connected to will shut down. B. The command does a "Force" shutdown. C. The command blocks user interaction. D. The command has timeout of 30,000 milliseconds. Correct Answer: A

8 The WLST life cycle shutdown command gracefully shuts down a running server instance or cluster. Reference: WebLogic Scripting Tool,Life Cycle Commands QUESTION 21 Which three statements are true about WebLogic users and groups? A. A user is associated with a single security provider. B. A user can be a member of several groups. C. A group can contain other groups. D. A group consists of a name and a password. E. A group is associated with multiple security providers. F. Both users and groups are assigned a keystore. Correct Answer: ABC B: For efficient security management, BEA recommends adding users to groups. A group is a collection of users who usually have something in common, such as working in the same department in a company. C: Example of group nesting: Every user is a member of the everyone group. The users group is nested within the everyone group. Note: Security Providers - are modules that provide security service to application to protect Weblogic resource. Types of security providers in WebLogic Server are Authentication Provider, Authorization Provider, Auditing Providers, Credential Mapping Provider, Identity Asser- tion Provider, Principal Validation Provider, Adjudication Providers, Role Mapping Providers, Certificate Lookup and Validation Providers, Keystore Providers and Realm Adapter providers D: There is no password for a group. F: A keystore is a mechanism designed to store password-protected store private keys and trusted CA certificates. In the WebLogic Server security architecture, the WebLogic Keystore provider is used to access keystores. You cannot use a custom Keystore provider with WebLogic Server. References: Securing WebLogic Resources, Users, Groups, And Security Roles QUESTION 22 Your production JMS server and/or its consumers are not able to handle the incoming message workload. The number of messages on the server never stabilizes and the server eventually becomes overload. Which JMS server attribute will best help prevent the JMS server from being overloaded by producers? A. Producer Pause High B. Messages Threshold High C. Reconnect Polity D. Paging Directory E. Pool Maximum Capacity Correct Answer: B JMS Configuration option ' Messages Threshold High': The upper threshold (number of messages stored in this JMS server) that triggers flow control and logging events. A value of -1 disables the events for this JMS server. If the number of messages exceeds this threshold, the triggered events are: Log Messages - A message is logged on the server indicating a high threshold condition. Flow Control - If flow control is enabled, the JMS server becomes armed and instructs producers to begin decreasing their message flow. Reference: Administration Console Online Help, JMS Server: Configuration: Thresholds and Quotas QUESTION 23 Which three statements are true about WebLogic clusters? A. Clusters provide clients with transparent failover. B. EJB applications can be targeted to an entire cluster. C. All cluster members must bind to the same port number. D. Cluster members replicate application data by using heartbeats. E. Cluster members can be associated with one or more domains. F. Web applications require a proxy in order to be used in a cluster. Correct Answer: ABC A: If an object is clustered, failover and load balancing for that object is available. In a WebLogic Server cluster, application processing can continue when a server instance fails. You "cluster" application components by deploying them on multiple server instances in the cluster--so, if a server instance on which a component is running fails, another server instance on which that component is deployed can continue application processing. The choice to cluster WebLogic Server instances is transparent to application developers and clients. B: A clustered application or application component is one that is available on multiple WebLogic Server instances in a cluster. If an object is clustered, failover and load balancing for that object is available. Deploy objects homogeneously--to every server instance in your cluster --to simplify cluster administration, maintenance, and troubleshooting. Web applications can consist of different types of objects, including Enterprise Java Beans (EJBs), servlets, and Java Server Pages (JSPs). Note: Load balancing and failover for EJBs and RMI objects is handled using replica-aware stubs, which can locate instances of the object throughout the cluster.

9 C: Cluster Multicast Address and Port Identify the address and port you will dedicate to multicast communications for your cluster. D: Cluster heartbeats-- Each WebLogic Server instance in a cluster uses multicast to broadcast regular "heartbeat" messages that advertise its availability. By monitoring heartbeat messages, server instances in a cluster determine when a server instance has failed. E: All server instances in a cluster must reside in the same domain; you cannot "split" a cluster over multiple domains. Similarly, you cannot share a configured resource or subsystem between domains. F: Proxy might be needed depending how you set up the architecture, but a proxy is not required for web applications. Reference: Using WebLogic Server Clusters, Understanding WebLogic Server Clustering QUESTION 24 Which three statements are true when an Administration Server is compared to a managed server? A. A domain must have at least one of each type of server. B. Administration Server keeps a domain log, but a Managed Server does not. C. A Managed Server keeps a server log, but an Administration Server does not. D. When a Managed Server comes up, it asks its Administration Server for the latest configuration. E. An Administration Server manages the domain configuration. F. JEE applications are deployed only to a Managed Server. Correct Answer: DEF D: When a Managed Server starts, it contacts the Administration Server to retrieve its configuration information. If a Managed Server is unable to connect to the specified Administration Server during startup, it can retrieve its configuration directly by reading a copy of the config.xml file and other files located on the Managed Server's own file system. E: One instance of WebLogic Server in each domain acts as an Administration Server. The Administration Server provides a central point for managing a WebLogic Server domain. F: For a typical production system, BEA recommends that you deploy your applications only on Managed Servers. This practice allows you to dedicate the Administration Server to configuration and monitoring of the domain, while one or more Managed Servers service your applications. A: In a domain with only a single WebLogic Server instance, that server functions both as Administration Server and Managed Server. B, C: Many WebLogic Server operations generate logs of their activity. Each server has its own log as well as a standard HTTP access log. These log files can be configured and used in a variety of ways to monitor the health and activity of your servers and applications. Reference: Overview of WebLogic Server System Administration QUESTION 25 Which three tasks can be performed by the Node manager? A. Start a server. B. Define a node server. C. Host the Node Manager console. D. Automatically restart a failed server. E. Kill a failed application on a server. F. Kill the process of a server that did not shut down properly. Correct Answer: ABD Node Manager enables you to perform these tasks: * Start and stop remote Managed Servers. (A) * Monitor the self-reported health of Managed Servers and automatically kill server instances whose health state is "failed". * Automatically restart Managed Servers that have the "failed" health state, or have shut down unexpectedly due to a system crash or reboot. (D) QUESTION 26 You have successfully created a global data source and connection pool via the administration console. In which directory relative to the domain will this new data source and connection pool definition located? A. in a directory named config/datasource B. in a directory named config/connpool C. in a directory named config/resources D. in a directory named config/jdbc E. in a directory named config Correct Answer: D When you create a JDBC resource (data source or multi data source) using the Administration Console or using the WebLogic Scripting Tool (WLST), WebLogic Server creates a JDBC module in the config/jdbc subdirectory of the domain directory, and adds a reference to the module in the domain's config.xml file. Reference: Configuring WebLogic JDBC Resources QUESTION 27 What is the maximum number of targets (standard or migrate) that you can configure for a JMS server? A. 0 B. 1 C. 2 D. No limit

10 Correct Answer: D To configure the migratable target servers for JMS-related service migration: 1. If you have not already done so, in the Change Center of the Administration Console, click Lock & Edit (see Use the Change Center). 2. In the Domain Structure tree, expand Environment, then select Migratable Targets. 3. On the Summary of Migratable Targets page, click New. On the Create a new Migratable Target page: In Name, enter a name for the migratable target. In Cluster, select a configured cluster for the migratable target. Reference: Configure migratable targets for JMS-related services QUESTION 28 You are deploying a web application called inventory.war. It has been installed and has the Stat* "Prepared." It is targeted to the Managed Server named managed1. The web application's context route is /inventory and the starting page is index.jsp However, you want to test the application before allowing end users access to it. In the administration console, you select inventory-war, and then select Start and "Servicing only administration requests. In your web browser, you need to enter a host and port followed by /inventory/index.jsp. What host and port would you use? A. managed, host and port B. Administration Server host and port C. Managed1 host and Administration port D. Administration Server host and Administration port Correct Answer: D Servicing only administrative requests: Specifies that WebLogic Server make the application available in Administration Mode only. While in Administration mode, the application can be accessed only by internal clients through a configured Administration port. Reference: Oracle Fusion Middleware Oracle WebLogic Server Administration Console Online Help 11g Release 1, A weblogic.deployer Command-Line Reference QUESTION 29 You deployed a simple web application WAR by using the administration console. Its state is currently "Active." In the administration console, under Configuration of the application, you change some deployment descriptor values. What happens when you save such changes? A. The changes are in memory and temporary B. This is not possible because changes cannot be made to an "Active" application. C. You are prompted to select a location for a new deployment plan where the changes will be stored. D. The archive is opened and new versions of the deployment descriptors are placed within it. Correct Answer: C Note: You can use the Administration Console to configure selected deployment descriptor element values for an EJB that is deployed as an exploded application. To configure editable deployment descriptor values for an EJB that is deployed as an exploded application: 1. If you have not already done so, in the Change Center of the Administration Console, click Lock & Edit (see Use the Change Center). 2. In the left pane of the Administration Console, select Deployments. 3. In the right pane, click the desired EJB module. 4. Select the Configuration > General tab. Selected deployment descriptor elements for the EJB are listed. 5. Enter new values for the elements you want change, and click Save. 6. To activate these changes, in the Change Center of the Administration Console, click Activate Changes. Not all changes take effect immediately--some require a restart Reference: Oracle Fusion Middleware Oracle WebLogic Server Administration Console Online Help 11g Release 1, Configure deployment descriptor values QUESTION 30 Your server includes an application that uses a generic JDBC data source to connect to a database. However, the network connection between the server and the database is not 100% reliable. You wish to avoid scenarios in which the application fails due to a failed JDBC connection. Identify two data source attributes to help accomplish this. A. Statement Cache B. Pool Reserve Mode C. Test Table Name D. Test Connection Mode E. Test Connections on Reserve Correct Answer: AE A: Each connection in a data source has its own individual cache of prepared and callable statements used on the connection. However, you configure statement cache options per data source. That is, the statement cache for each connection in a data source uses the statement cache options specified for the data source, but each connection caches it's own statements. E: When Test Connections On Reserve is enabled, when your application requests a connection from the data source, WebLogic Server tests the connection using the query specified in Test Table Name before giving the connection to the application.

11 Testing reserved connections can cause a delay in satisfying connection requests, but it makes sure that the connection is viable when the application gets the connection. Reference: Oracle Fusion Middleware Oracle WebLogic Server Administration Console Online Help 11g Release 1, Configuring JDBC Data Sources QUESTION 31 You have selected Configuration Archive Enabled for the domain. When a configuration change and activated, where is the previous version of the configuration archived? A. in the Oracle database B. in the config directory C. in the pending directory D. in the console-ext directory E. in the configarchive directory Correct Answer: E You can configure WebLogic Server to make backup copies of the configuration files. This facilitates recovery in cases where configuration changes need to be reversed or the unlikely case that configuration files become corrupted. When the Administration Server starts up, it saves a JAR file named config-booted.jar that contains the configuration files. When you make changes to the configuration files, the old files are saved in the configarchive directory under the domain directory, in a JAR file with a sequentially-numbered name like config-1.jar. Reference: Understanding Domain Configuration, Configuration File Archiving docs.oracle.com/cd/e12840_01/wls/docs103/domain_config/config_files.html QUESTION 32 When a typical application utilizes a JDBC data source, the process involves several steps. Identify three of these steps. A. The application returns the connection to the data source. B. The application looks up the data source using the JNDI name. C. The application tests the connection to verify the database's availability. D. The application adds a new connection to the data source if none are available. E. The application requests a connection from the data source. Correct Answer: BDE Applications look up the data source on the JNDI tree or in the local application context (B) and then reserve a database connection with the getconnection (E) method. Data sources and their connection pools provide connection management processes that help keep your system running and performant. B: JNDI Name - Enter the JNDI path to where this JDBC data source will be bound. Applications look up the data source on the JNDI tree by this name when reserving a connection. Note: If you've done any work with JDBC DataSources in a Web application, you already understand the basic process: create an initial JNDI (Java Naming and Directory Interface) context, then use the context to perform a "lookup" to retrieve your DataSource. C: The test is optional and if it is executed by weblogic before releasing the connection to the application Reference: Administration Console Online Help, Create JDBC data sources jdbc_datasources/ CreateDataSources.html QUESTION 33 As an Oracle WebLogic Server administrator, you are given an EAR file application to deploy. Identity three reasons for creating an EAR file first. A. After the.ear file has been deployed, the developer will not have to ask for your assistance to deploy it again. B. The EAR file is created to avoid namespace clashes in the Java code. C. The EAR file can contain multiple WAR, EAR, and other resources to easily bundle together. D. The EAR file is required if you are deploying an application. E. The EAR file can declare application-wide security roles definitions. Correct Answer: ABE E: An EARfile contains: * Web module A WAR file containing the view logics like JSPs, Servlets, Html contents. Every web module must have one Web Deployment descriptor placed inside "WEB-INF/ web.xml" web.xml is a J2EE standard deployment descriptor. Among other settings, it has a set of elements for configuring security for the web application. Note: * An EAR file provides a convenient way to bundle up all pieces of a J2EE application. It may contain Java Module, WAR Module or an EJB Jar module. An EAR can contain at least any one of these modules. EAR may contain more Modules as well. * To bring your portal online in a production environment, it is first necessary to prepare your portal application. Typical preparation steps include modifying deployment descriptors for the product, building the Enterprise archive (EAR) with all its pre-compiled classes, and deciding if you want to compress that EAR into an archive or leave it exploded. Reference: Preparing and Deploying the EAR File QUESTION 34 Identify three types of JMS resources that can be configured as a part of a JMS module. A. JMS Distributed Destination B. JMS Connection Factory

12 C. JMS Data Source D. JMS Destination E. JMS Server Correct Answer: ABD Configurable JMS Resources in Modules The following configuration resources are defined as part of a system module or an application module: * Distributed destinations (A, D) * Connection factories (B) * Queue and topic destinations * Templates * Quota * Foreign servers * MS store-and-forward (SAF) configuration items All other JMS environment-related resources must be configured by the administrator as domain configuration resources. This includes: * JMS servers required (not E) * Store-and-Forward agents (optional) * Path service (optional) * Messaging bridges (optional) * Persistent stores (optional) Reference: Configuring And Managing WebLogic JMS, Configurable JMS Resources in Modules QUESTION 35 A managed server, myserver1, has a boot.properties file in the security directory. It was started with the startmanageweblogic.sh script(.cmd in windows) and his boot.properties file was used for its startup credentials. You just used the administration console to change all administrator passwords. To continue using boot.properties, what can you do? A. This is not possible. A boot.properties file can be used only with the Administration Server. B. Delete boot.properties. In the administration console, under the myserver configuration, select Generate Boot Identity file. C. You need not do anything- The password in boot.properties was automatically updated by administration console when you changed the password. D. Edit boot.propetties. Type over the encrypted password with the new password in clear text. The next time myserver1 is started, it will encrypt the password in the file. E. Delete boot.properties. Use the WLST encrypt () command to create a new boot.properties file containing the new password. Copy that file into the security directory of myserver1 Correct Answer: D If you install the WebLogic Server Examples component, the default user weblogic is created that has permission to start and stop WebLogic Server. The default password is welcome1. If you change the password of the weblogic user, WebLogic Server does not automatically update this password in the boot.properties file, which is located in the DOMAIN_NAME/servers/AdminServer/security directory. If you change the password for user weblogic, you can use either of the following workarounds so that you can continue to boot a WebLogic Server instance via that username and its new password: * Remove the boot.properties file. Subsequently each time you start WebLogic Server, you are prompted for the username and password. The changed password for the weblogic user will be accepted. * Modify the existing boot.properties file, changing the username and password as follows: username=weblogic password=welcome1 Subsequently during the server startup process, the boot.properties file is encrypted again. Reference: Oracle Fusion Middleware Oracle WebLogic Server Administration Console Online Help 11g Release 1, Limitation Regarding User weblogic QUESTION 36 Refer to the Exhibit. Which three statements are true about using the administration console to shut down a server? A. The configuration must first be locked. B. The choice "Force Shutdown Now" drops in-work requests. C. Both the choices, "When work completes" and "Force Shutdown Now", reject any new requests. D. The choice "When work completes" allows in work requests to complete before the server down. E. The administration console can be used to shut down Managed Servers, such as managed not the Administration Server. Correct Answer: BCD

13 B: select Force Shutdown Now to stop the server immediately without completing ongoing tasks. D: Select When Work Completes to gracefully shut down the server A graceful shutdown gives WebLogic Server subsystems time to complete certain application processing currently in progress. Screenshot: A: You can shutdown a managed server without selecting "lock & edit". E: The Administration server can also be shutdown. QUESTION 37 Your company is developing batch order system that utilities JMS. Each order message that is created will be broadcasted to and consumed by several order processing and billing applications. As part of configuring the domain that will support this system, which type of JMS destination resource should you create? A. Grid B. Queue C. Topic D. Batch E. Client Correct Answer: C A JMS destination identifies a queue (point-to-point) or topic (publish/subscribe) resource within a JMS module. A JMS topic identifies a publish/subscribe destination type for a JMS server. Topics are used for asynchronous peer communications. A message delivered to a topic is distributed to all consumers that are subscribed to that topic. Reference: Configuring Basic JMS System Resources,Queue and Topic Destination Configuration QUESTION 38 You monitor a running JDBC data source with the console and note the following values: Current Capacity = 10 Current Capacity High Count = 20 Identify two plausible explanations for these metrics. A. The pool size has increased. B. The pool size has decreased. C. The workload was higher than it is now. D. The workload was lower than it is now. E. The statement cache size is 10. F. The statement cache size is 20. Correct Answer: BC The pool size has decreased from a maximum 20 to 10. The workload has been 20. Now it is 10. The workload was higher. Note: Current Capacity: The current count of JDBC connections in the connection pool in the data source. Current Capacity High Count: Highest number of database connections available or in use (current capacity) in this instance of the data source since the data source was deployed. Note: E, F: The statement cache deals with statements. Current capacity and Current Capacity High Count deals with connections. Statement Cache Size shows the total number of statements to cache for each connection in each instance of the data source. WebLogic Server can reuse statements in the cache without reloading the statements, which can increase server performance. Each connection in the connection pool has its own cache of statements. Reference: Administration Console Online Help, JDBC Data Source: Monitoring: Statistics QUESTION 39 Identify the server attributes that you must configure to communicate with the server via HTTPS. A. SSL Listen Address B. SSL listen Port

14 C. SSL Listen Port Enabled D. Production Mode Enabled E. Startup Mode Correct Answer: B Enabling SSL under WLS 10.3 See step 6) below. Steps to configure WLS for SSL: 1) Open the WLS console 2) Select from the Domain Structure -> (your domain) -> Environment -> Servers 3) Select the server from the Summary of Servers page you wish to configure for SSL. 4) Under the Settings for (server name) page, select the Configuration tab, then General tab (the defaults). 5) If WLS is running in production mode, select the Lock & Edit button. 6) Select the SSL Listen Port Enabled checkbox, and enter your preferred port in the SSL Listen Port. 7) Press the Save button. 8) If WLS is running in production mode, select the Release Configuration button. Reference: Enabling SSL and disabling non-ssl under WLS 10.3 QUESTION 40 You are creating a new domain by using the Configuration Wizard, based solely on the Basic WebLogic Server Domain product (no template). Select three resources that you can create while still in the Configuration Wizard. A. Administration Server B. Managed Server C. Data Server D. JMS Server E. Cluster F. Domain Log Correct Answer: ABE A: The Configure the Administration Server window prompts you to define the configuration information for the Administration Server, including: Administration Server name Listen address Nonsecure and secure (optional) listen ports B: The Configure Managed Servers window prompts you to define the configuration information for one or more Managed Servers, including: Managed Server name Listen address Nonsecure and secure (optional) listen ports E: The Configure Clusters window prompts you to define the configuration information for one or more clusters, including: Cluster name Multicast address and port Cluster address that identifies the Managed Servers in the cluster Frontend host if you are using a proxy server or a firewall. Frontend HTTP port if you are using a proxy server or a firewall. Reference: To create a custom domain with Managed Servers, a cluster, and application services platform/docs81/confgwiz/tutorials.html QUESTION 41 Which three statements are true about the administration console? A. The administration console cannot be disabled. B. The context path of the administration console may be changed. C. The administration console may be extended. D. If a domain is in Development Mode, the administration console no longer requires an administration-level user when logging in. E. If a domain is in Production Mode, access to the administration console must be made through secure port. F. If the domain's Administration Port is enabled, access to the administration console must be made only through that port. Correct Answer: BCF B: The Console Context Path is an advance configuration option. The context path that you want to use in URLs that specify the Administration Console. Note: Create a new WebLogic Server domain based on a template. Templates allow you to re-create an existing do- main for use in another context, such as migrating a domain containing an application under development to a pro- duction environment. C: An Administration Console extension is a WAR file that contains the resources for a section of a WebLogic Portal Web application. When you deploy the extension, the Administration Console creates an in-memory union of the files and directories in its WAR file with the files and directories in the extension WAR file. Once the extension has been deployed, it is a full member of the Administration Console: it is secured by the WebLogic Server security realm, it can navigate to other sections of the Administration Console, and if the extension modifies WebLogic Server resources, it participates in the change control process. A: Exposing the console in your production environment might be security issue. In those cases you can either dis- able the console or hide it. Needless to say if you disable the console then your only option is to depend on com- mand-line and scripting tools for any other administration activity or to even enable the console back. But hiding will provide a level or security. To disable the console: In the admin console navigate to --> General --> Advanced Options --> Console Enabled. De-select that option to disable console (restart required). To hide the cosole: E: Access through a secure port is recommended, but not required: The administration port requires all communication to be secured using SSL. By default, all servers in a do- main use demonstration certificate files for SSL, but these certificates are not appropriate for a production environment. Reference: Administration Console Online Help, Advanced Configuration Options Reference: Extending the Administration Console for Oracle WebLogic Server 11g Release 1

15 QUESTION 42 Which three statements are true about deployment plans? A. A plan is an XML file. B. A plan is packaged within an application archive. C. You can generate a new plan with the administration console. D. A plan is a required to deploy EJB applications and modules. E. A plan may override values in an application's deployment descriptors. F. A single application deployment can be associated with multiple plans. Correct Answer: ACE A: A deployment plan is an XML document that defines an application's WebLogic Server deployment configuration for a specific WebLogic Server environment. C: The Administration Console updates or creates new deployment plans as necessary when you change configuration properties for an installed application. E: A deployment plan can apply changes to deployment properties stored in the application's existing WebLogic Server deployment descriptors. B: A deployment plan resides outside of an application's archive file. Reference: Overview of WebLogic Server Application Development, Deployment Plans QUESTION 43 All the servers in your domain are running. After you connect to the Administration Server in WLST you run the following command, which completes with no error: Progress = deploy (appname = `salesapp', path = `sales.war', target = managed1, managed2', planpath = `plan.xml') Which two statements are true? A. The web application is now "Active." B. The command creates new deployment plan called plan.xml. C. In the administration console, the name of this deployment is sales.war. D. The web application has been targeted to managed1, managed2, and the Administration Server. E. You can view the status of the deployment by sending a message to the object named progress. Correct Answer: AE They deploy command is used to deploy an application to a WebLogic Server instance. (A) The deploy command returns a WLSTProgress object that you can access to check the status of the command. (E) Note: Syntax deploy(appname, path, [targets], [stagemode], [planpath], [options]) * appname Name of the application or standalone J2EE module to be deployed. * targets Optional. Comma-separated list of the target. Each target may be qualified with a J2EE module name (for example, module1@server1) enabling you to deploy different modules of the application archive on different servers. This argument defaults to the server to which WLST is currently connected. Note 2: The WebLogic Scripting Tool (WLST) is a command-line scripting interface that system administrators and operators use to monitor and manage WebLogic Server instances and domains. B: PlanPath is not created by default. The option createplan is a Boolean value indicating that user would like to create a default plan. This option defaults to false. * planpath Optional. Name of the deployment plan file. The filename can be absolute or relative to the application directory. This argument defaults to the plan/ plan.xml file in the application directory, if one exists. C: sales.war is not the name of the deployment. * path Name of the application directory, archive file, or root of the exploded archive directory to be deployed. Reference: WebLogic Scripting Tool, WLST Command and Variable Reference QUESTION 44 Your task is to create and start a managed server on a "remote" computer (a computer other than the one where the domain has been created and the Administration server is currently running). So far you have: 1. Created the managed server, called startmanaged1, in the administration console 2. Created a managed server" JAR file template by using the pack command or, the Administration server computer. Which order of steps on the remote computer will successfully finish your task? A. 3. Copy the JAR file from the Administration Server computer. 4. Run the unpack command on the JAR file. 5. In the new domain folder created by the command, start managed: by using the startmanagedweblogic. sh script (. cmd in Windows), which is found under its bin directory B. 3. Install WebLogic Server. 4. Copy the JAR file from the Administration Server computer. 5. Run the unpack command on the JAR file. 6. In the administration console, under the Control tab, select managed1 and click the Start button. C. 3. Install WebLogic Server. 4. Copy the JAR file from the Administration Server computer. 5. Run the unpack command on the JAR file. 6. In the new domain folder created by the command, start managed1 by using the Logic. sh script (. cmd in Windows), which is found under its bin directory. D. 3. Install WebLogic Server. 4. Copy the JAR file from the Administration Server computer.

16 5. Run the unpack command on the JAR file. 6. In the new domain folder created by the command, startmanaged1 by using the startmanagedweblogic.sh script (. cmd in Windows), which is found under its bin directory. Correct Answer: D Creating a Managed Server on a Remote Machine (Step 3) * Install WebLogic Server on the machines on which you want to host Managed Servers for the WebLogic domain. * Establish a session with the remote machine. You may use any valid method, such as telnet, to do so. Step 4: * Copy the Managed Server template to the remote machine. * On the remote machine, navigate to the WLS_HOME\common\bin directory. * (Step 5) Run the following command: unpack -domain=domain -template=template.jar Starting Managed Servers on a Remote Machine * Start the Administration Server for the WebLogic domain * On the remote machine, navigate to the directory for the WebLogic domain that you created *(Step 6) Start the Managed Server on the remote machine. On a Windows system, run one of the following commands at the DOS prompt: startmy_managed_server startmanagedweblogic my_managed_server admin-url On a UNIX system, run one of the following commands:./startmy_managed_server.sh./startmanagedweblogic.sh my_managed_server admin-url Reference: Oracle Fusion Middleware Oracle WebLogic Server Administration Console Online Help 11g Release 1, Reference: Creating and Starting a Managed Server on a Remote Machine QUESTION 45 Identify three attributes of a WebLogic cluster. A. Listen Address B. Cluster Address C. Cluster Factory D. Messaging Mode E. Servers F. Targets Correct Answer: BDE WebLogic Cluster Attributes includes: B: * ClusterAddress Defines the address to be used by clients to connect to this cluster. This address may be either a DNS host name that maps to multiple IP addresses or a comma separated list of single address host names or IP addresses. If network channels are configured, it is possible to set the cluster address on a per channel basis. D: The Message Mode of a cluster can be either Unicast or multicast. E: Managed Servers are included in a WebLogic cluster. Note: The config.xml file is an XML document that describes the configuration of a WebLogic Server domain. config.xml consists of a series of XML elements. The Domain element is the top- level element, and all elements in the Domain descend from the Domain element. The Domain element includes child elements, such as the Server, Cluster, and Application elements. These child elements may have children of their own. For example, the Server element includes the child elements WebServer, SSL and Log. The Application element includes the child elements EJBComponent and WebAppComponent. Each element has one or more configurable attributes. An attribute defined in config.dtd has a corresponding attribute in the configuration API. For example, the Server element has a ListenPort attribute, and likewise, the weblogic.management.configuration.servermbean has a ListenPort attribute. Configurable attributes are readable and writable, that is, ServerMBean has a getlistenport and a setlistenport method. Reference: WebLogic Server Configuration Reference, Cluster attributes QUESTION 46 A client accesses a web application named companystore that is running on WebLogic Server. After adding several items to the shopping cart, the host server crashes. The client is automatically redirected to another server by a proxy, but the shopping cart is now empty. Which WebLogic Server feature would you enable to remedy this situation? A. Application Persistence B. Message Persistence C. Session Replication D. Dynamic Failover E. Stateful Pooling Correct Answer: C In order for a cluster to provide high availability it must be able to recover from service failures. In clusters that utilize Web servers with WebLogic proxy plug-ins, the proxy plug-in handles failover transparently to the client. If a server fails, the plug-in locates the replicated HTTP session state on a secondary server and redirects the client's request accordingly. Reference: Using WebLogic Server Clusters, Failover and Replication in a Cluster QUESTION 47 Which three statements are true about the Change Center in administration console? A. The Change Center has a link to view the changes made so far. B. The Change Center is available only in a Production Mode domain. C. The Change Center has a link to view any servers that need to be restarted. D. After activating the changes to a server's configuration, you must always restart that server.

17 E. In a Development Mode domain, the configuration lock can be acquired automatically. F. Changes must always be activated before they can be undone. Correct Answer: ACE A: You can view any changes that you have saved, but not yet activated, by clicking the View Changes and Restarts link in the Change Center. C: The View Changes and Restarts link presents two tabs, Change List and Restart Checklist: * The Change List tab presents all changes that have been saved, but not yet activated. * The Restart Checklist lists all servers for which non-dynamic changes have been activated, but which require restarts before the changes become effective. Incorrect: D: is wrong because dynamic changes usually don't require a restart if that is all that was changed. If it were mix of dynamic and non-dynamic changes it would require a restart. F: is wrong because in production mode the change center has the "undo all changes" button so you don't have to activate the changes before you undo them. Reference: Using the Change Center QUESTION 48 Identify two methods for utilizing WebLogic Server's production redeployment feature. A. Specify a version identifier when deploying the application. B. Include a version identifier in the application's manifest file. C. Provide a version identifier when running the Plan Generator tool. D. Include a unique context root in the application's descriptor files. Correct Answer: AB A: If you are testing the production redeployment feature, or you want to use production redeployment with an application that does not include a version string in the manifest file, specify a unique version string by using the -appversion option when deploying or redeploying an application B: To assign a version identifier to an application, BEA recommends that you store a unique version string directly in the MANIFEST.MF file of the EAR or WAR being deployed. Reference: Redeploying Applications in a Production Environment, Specifying an application version identifier QUESTION 49 Identify four attributes of a JDBC data source. A. URL B. Targets C. JNDI Name D. Delivery Mode E. Database Driver F. Server Log Correct Answer: ABCE A: When creating a JDBC data source using the Administration Console, you are prompted to select a JDBC driver. The Administration Console provides the driver class name and helps you construct the URL as required by the driver. B: JDBC Data Source: Targets. Use this page to select the servers or clusters on which you would like to deploy this JDBC data source. C: JNDI Name, The JNDI path to where this data source is bound. By default, the JNDI name is the name of the data source. E: When deciding which JDBC driver to use to connect to a database, you should try drivers from various vendors in your environment. In general, JDBC driver performance is dependent on many factors, especially the SQL code used in applications and the JDBC driver implementation. Reference: Configuring and Managing WebLogic JDBC, Understanding JDBC Data Sources QUESTION 50 Identify two reasons for defining machines and assigning servers to them in Weblogic Server. A. A machine can be the proxy to a cluster. B. A machine definition is required to configure the Node Manager. C. To reference an instance of WebLogic Server, you must know its machine and port. D. Machine is a required organizational unit. A domain contains machines and machines contain servers. E. WebLogic Server uses server machine assignments to help it choose servers in a cluster on which to replicate session state. F. The machine's Cluster Weight attribute may be used by load balancers to help them determine how often to send requests to servers assigned to that machine. Correct Answer: BE B: The Administration Server uses the machine definition in conjunction with the Node Manager application to start remote WebLogic Server instances. E: By default, WebLogic Server attempts to create session state replicas on a different machine than the one that hosts the primary session state. You can further control where secondary states are placed using replication groups. A replication group is a preferred list of clustered servers to be used for storing session state replicas. Using the WebLogic Server Console, you can define unique machine names that will host individual server instances. These machine names can be associated with new WebLogic Server instances to identify where the servers reside in your system. Machine names are generally used to indicate servers that run on the same machine. Reference: Administration Console Online Help, Machines Reference: Failover and Replication in a Cluster

18 QUESTION 51 The computer that the Administration Server was running on has crashed and cannot be restarted. Which three steps are required to bring up the Administration Server on the backup computer? A. Move the crashed computer's IP address to the backup computer. B. Have WebLoqic Server installed on the backup computer. C. Have a copy of the configuration and security files of the domain on the backup computer. D. Shut down the managed servers of the domain. E. Start the Administration Server on the backup computer. Correct Answer: BCE If a machine crash prevents you from restarting the Administration Server on the same machine, you can recover management of the running Managed Servers as follows: (B) 1. Install the WebLogic Server software on the new administration machine (if this has not already been done). 2. Make your application files available to the new Administration Server by copying them from backups or by using a shared disk. Your application files should be available in the same relative location on the new file system as on the file system of the original Administration Server. (C) 3. Make your configuration and security data available to the new administration machine by copying them from backups or by using a shared disk. For more information, refer to Directory and File Backups for Failure Recovery. (E) 4. Restart the Administration Server on the new machine. Reference: Avoiding and Recovering From Server Failure, Restarting an Administration Server on Another Machine QUESTION 52 You received a signed certificate from a Certificate Authority and you wish to use the keytool command-line utility to store it in your keystore. Which command of keytool would you us A. genkey pair B. import cert C. gensockey D. importkeystore E. storepasswd Correct Answer: B B: keytool import Reads the certificate or certificate chain (where the latter is supplied in a PKCS#7 formatted reply) from the file cert_file, and stores it in the keystore entry identified by alias. If no file is given, the certificate or PKCS#7 reply is read from stdin. keytool can import X.509 v1, v2, and v3 certificates, and PKCS#7 formatted certificate chains consisting of certificates of that type. A: keytool --genkey generates a key pair (a public key and associated private key). Wraps the public key into an X.509 v1 self-signed certificate, which is stored as a single-element certificate chain. This certificate chain and the private key are stored in a new keystore entry identified by alias. Description: Loads a trusted CA certificate into a keystore. If the keystore does not exist, it is created. Reference: Configuring Identity and Trust, Commonly Used keytool Commands QUESTION 53 YCMJ are viewing the deployments in the administration console. A web application that is targeted to the Managed Server named server01 has a State of "Now." Which statement best explains this State? A. Server01 is running and the application has been installed. B. Sarver01 is shut down and the application has been installed. C. Server01 is running and the application has not been installed. D. Server01 is shut down and the application has not been installed. E. Server01 is running and the application was installed for the first time. F. Server01 is running and the application has been installed, but is not servicing requests. Correct Answer: E QUESTION 54 Which three tasks are required to use JDBC session persistence for a web application? A. Enable automatic migration on each server. B. Create the session database table. C. Configure SSL on each server. D. Edit the weblogic.xml descriptor. E. Create a multi data source. F. Create a JDBC data source. Correct Answer: BDF To specify JDBC-based persistent session storage for a Web application, follow these steps: 1. (B) Create a table named wl_servlet_sessions in the database 2. Assign a connection pool that has read/write permissions to the wl_servlet_sessions database table to your WebLogic cluster. 3. Assign the connection pool's associated data source to the same cluster. 4. (D) Edit the associated weblogic.xml file using an XML editor and set the value of thepersistentstoretype and PersistentStorePool parameters

19 Incorrect answer: E: A multi data source is an abstraction around a group of data sources that provides load balancing or failover processing between the data sources associated with the multi data source. Reference: Implementing Highly Available and Scalable Solutions Using the WebLogic Cluster, JDBC-Based Persistent Storage QUESTION 55 Which three statements are true about the default behavior of WebLogic Server proxy plug-ins? A. The proxy will pin a client to a specific server if a session cookie is created. B. The proxy fails over to another server if a connection or request times out. C. The proxy distributes requests to cluster members based on their CPU usage. D. The proxy dynamically learns the latest locations of cluster members. E. The proxy always uses SSL, regardless of the client's protocol. F. The proxy replicates session data to its backup proxy. Correct Answer: ABD A: When the HTTP client requests the servlet, HttpClusterServlet proxies the request to the WebLogic Server cluster. HttpClusterServlet maintains the list of all servers in the cluster, and the load balancing logic to use when accessing the cluster. In the above example, HttpClusterServlet routes the client request to the servlet hosted on WebLogic Server A. WebLogic Server A becomes the primary server hosting the client's servlet session. To provide failover services for the servlet, the primary server replicates the client's servlet session state to a secondary WebLogic Server in the cluster. This ensures that a replica of the session state exists even if the primary server fails (for example, due to a network failure). In the example above, Server B is selected as the secondary. The servlet page is returned to the client through the HttpClusterServlet, and the client browser is instructed to write a cookie that lists the primary and secondary locations of the servlet session state. If the client browser does not support cookies, WebLogic Server can use URL rewriting instead. Figure, Accessing Servlets and JSPs using a Proxy: B: In clusters that utilize Web servers with WebLogic proxy plug-ins, the proxy plug-in handles failover transparently to the client. If a server fails, the plug-in locates the replicated HTTP session state on a secondary server and redirects the client's request accordingly. D: The WebLogic proxy plug-in maintains a list of WebLogic Server instances that host a clustered servlet or JSP, and forwards HTTP requests to those instances on a round-robin basis. C: The WebLogic proxy plug-in maintains a list of WebLogic Server instances that host a clustered servlet or JSP, and forwards HTTP requests to those instances on a round-robin basis. This load balancing method is described in Round Robin Load Balancing. The plug-in also provides the logic necessary to locate the replica of a client's HTTP session state if a WebLogic Server instance should fail. F: SSL Parameters for Web Server Plug-ins Parameter: SecureProxy Default: OFF Description: Set this parameter to ON to enable the use of the SSL protocol for all communication between the plug-in and WebLogic Server. Reference: Using WebLogic Server Clusters, Failover and Replication in a Cluster Reference: Using WebLogic Server Clusters, Load Balancing in a Cluster QUESTION 56 Refer to the Exhibit

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