1z0-160.exam.47q 1z0-160 Oracle Database Cloud Service

Transcription

1 1z0-160.exam.47q Number: 1z0-160 Passing Score: 800 Time Limit: 120 min 1z0-160 Oracle Database Cloud Service

2 Exam A QUESTION 1 Which statement is true about the Oracle software releases that are currently supported in a Database as a Service (DBaaS) instance in Oracle Public Cloud? A. All versions and releases of Oracle Database 12c are supported. B. All versions and releases of Oracle Database 11g are supported. C. Oracle Database 11g Release 2 is supported. D. Oracle Database 12c is supported but only for single container databases. Correct Answer: C /Reference: : Release 2 and 12c Release 1 (and 2) are supported. References: QUESTION 2

3 What is the location of the associated database files of a Database Deployment? A. The installer sets the database file locations during installation by configuring the data file storage options. B. The Database Deployment data files are stored at: /u01: Oracle product software; the entire bits Compute Cloud storage volume /u02: Oracle Database data storage; the entire data Compute Cloud storage volume /u03: Database backup storage; the entire fra Compute Cloud storage volume /u04: Database redo logs; the entire redo Compute Cloud storage volume C. All database instance files on the Database Deployment are stored at /u01/app/oracle/oradata. D. The database file locations are read from utldbfiles.ora and users can update this file to set their own locations. Correct Answer: B /Reference: : Compute Cloud Service Storage Volumes When a Database Cloud Service database deployment is created at the Oracle Database Cloud Service service level, the following storage volumes are created.

4 References: Using Oracle Database Cloud Service (February 2017), page A-9 QUESTION 3 Which command would you execute to perform DBaaS recovery with the latest backup? A. dbaascli rec args latest B. dbaascli orec args -latest

5 C. dbaascli rec args -last D. dbaascli orec args -last Correct Answer: B /Reference: : dbaascli orec latest command restores the most recent backup and performs complete recovery. References: QUESTION 4 You are migrating an Oracle Database on-premise database to an Oracle Database Cloud Service (Database as a Service) that provides a pre-created Oracle Database database. What four migration methods can be used? A. conventional export/import B. Transportable Tablespace (TTS) with RMAN conversion C. Transportable Tablespace (TTS) by using Oracle Data Pump D. SQL *Loader E. RMAN image restore F. Data Pump Transportable Database (TDB) export/import Correct Answer: BCDF /Reference: : You load data into an Oracle database on Oracle Database Cloud Service using the same tools you would use for an Oracle database on another system. * (D) Using SQL*Loader to Load Data into the Database * Using Oracle Data Pump Import to Load Data into the Database * (BC) Using Transportable Tablespaces to Load Data into the Database There are two ways to transport a tablespace: Manually, involving issuing commands to SQL*Plus, RMAN, and Data Pump.

6 Using the Transport Tablespaces Wizard in Enterprise Manager * Using Pluggable Databases (PDBs) to Load Data into the Database * Using Oracle Public Cloud Data Transfer Services to Move Large Data Sets * (F) Full transportable export/import, is available to make migration to Oracle Database 12c faster, easier, and more efficient than ever before. Full transportable export is available starting with Oracle Database 11g Release 2 ( ). References: QUESTION 5 You created a Database as a Service (DBaaS) instance. This action also created a virtual machine and configured it for the DBaaS instance. It also created two user accounts. One of the users is oracle. What three functions can be used by Oracle users in a Database Deployment? A. Grant privileges and roles to database users. B. Create database users. C. Back up and recover databases. D. Create tablespaces. E. Reboot a VM. F. Use the sudo command to perform root user access operations. Correct Answer: ABC /Reference: : Oracle is the Oracle Database administrator account you use to access the system and perform non-root database administration tasks. A home directory, /home/ oracle, is created for this user. This user cannot use the sudo command to perform operations that require root-user access. Additionally, by default you cannot connect as this user to the compute node using SSH. You can add the public key to the user s $HOME/.ssh/authorized_keys file to grant persistent SSH access, or you can connect as the opc user and then use the sudo -s command to start a root-user command shell, followed by an su - oracle command to switch to the oracle user. Incorrect Answers: F: root is the root administrator for the system. You do not have direct access to this account. To perform operations that require root-user access, use the sudo command as the opc, not the oracle, user.

7 References: obe_dbaas_administering_your_database_cloud_service.html QUESTION 6 Where is the Oracle Database Cloud software for monitoring and backup installed? A. The Oracle Database Cloud software is located in the Database Automatic Diagnostic Repository (ADR). B. The installation is done at /var/opt/oracle/dbaascli and /var/opt/oracle/bkup_api. C. The location must be set during installation as user-defined locations for the installation to start. D. The location is based on Oracle Flex Architecture, which is similar to non-dbaas systems. Correct Answer: B /Reference: : When a database deployment is created using the Oracle Database Cloud Service service level, software is installed in the following locations. * bkup_api utility /var/opt/oracle/bkup_api * dbaascli utility /var/opt/oracle/dbaascli * Oracle REST Data Services /u01/app/oracle/product/apex_listener * Oracle Database $ORACLE_HOME: Oracle Database 12c: /u01/app/oracle/product/12.1.0/dbhome_1 Oracle Database 11g: /u01/app/oracle/product/11.2.0/dbhome_1 Note: Using the dbaascli utility, you can perform operations like: Changing the password of the SYS user Checking the status of the Oracle Data Guard configuration Switchover and failover in an Oracle Data Guard configuration Patching the database deployment Database recovery Rotating the master encryption key References: Using Oracle Database Cloud Service (February 2017), A-4 QUESTION 7 Oracle provides additional web-based tools for monitoring Database as a Service (DBaaS) instances. One of the tools is DBaaS Monitor Console.

8 Which user would you have to log in as to use this tool? A. dbsnmp B. sys C. dbaas_monitor D. sysman Correct Answer: C /Reference: : To access Oracle DBaaS Monitor when the HTTPS port is unblocked: 1. Open the Oracle Database Cloud Service console. 2. From the menu for the deployment, select Open DBaaS Monitor Console. A window prompting you for your user name and password is displayed. 3. Enter dbaas_monitor as the user name and the password specified during the database deployment creation process, and then click OK. References: Using Oracle Database Cloud Service (February 2017), QUESTION 8 How would you connect from your local machine to the database instance on the DBaaS server by using SQL*Net? A. You start an SSH process on your local machine to communicate to a tunnel created on the DBaaS server. B. You must use port 1521 and the TCPS communication protocol. C. You can use only the SSH connection that is defined on port 22 that is configured by default during DBaaS instance installation. D. You must use Transparent Data Encryption (TDE) to secure connections to the DBaaS database instance when using SQL*Net connections from your local machine to DBaaS database instances. Correct Answer: B /Reference: : To confirm remote access to the database through the SQL*Net security rule, create a connection to the database in Oracle SQL Developer. When creating the connection, fill out the fields as follows:

9 Username: enter SYSTEM. Password: enter Pa55_WoRd. Hostname: enter the Public IP address of the compute node associated with the database deployment. To find out this address, display details of the service as described in Viewing Detailed Information for a Database Deployment Port: enter SID: enter ORCL. After entering values, click Test to test the connection. Note: TCPS is TCP/IP with SSL. References: Using Oracle Database Cloud Service (February 2017), QUESTION 9 How do you enable a default connection between Database as a Service (DBaaS) instances? A. by creating security lists and adding the instances that you want to communicate to that group B. by creating dedicated communication keys and setting them to be used only for your DBaaS instance-to-instance communication C. by creating nothing for communication between the DBaaS instances because all instances are interconnected by default D. by installing and configuring the NETMGR utility for your DBaaS environment, and then using it to set up the required communication channels Correct Answer: A /Reference: : Before your DBaaS database was created, you or a coworker generated a private and public SSH key pair, perhaps using PuTTY Key Generator. The public key was specified when your database instance was created; a copy of that public key was stored in the VM hosting your database. When you define in PuTTY an SSH connection to the VM hosting your database, you will specify a copy of the private key stored on your local PC. When you initiate a PuTTY connection, the VM compares the private key to the matching public key stored in the VM. The VM permits the connection when the private and public key match as a valid key pair. References:

10 obe_dbaas_connecting_to_an_instance.html QUESTION 10 You are on the Database Cloud Service Instance View page. Which three consoles can you open? A. OPC Console B. GlassFish Administration Console C. Storage Container Console D. Application Express Console E. User Console F. Database Express Manager Console Correct Answer: DEF /Reference: : The menu for each deployment that provides the following options: Open DBaaS Monitor Console Open the Oracle Cloud Database Monitor for the deployment. Open Application Express Console Open the Oracle Application Express home page for the deployment. Open EM Console Open the database console, either Enterprise Manager Database Express 12c or Enterprise Manager 11g Database Control. References: QUESTION 11 What are two ways to enable a port on your computer node of Database Deployment for access to your Database Deployment? A. Use your public and private key pairs to define a list of preferred ports that get enabled during your Database Deployment installation. B. Create a tunnel for port forwarding by using SSH. C. Configure all remote connections through port 22 that is assigned by default for SSH connections. D. Ask Oracle Database Cloud Service to open the required ports. E. Use the Oracle Compute Cloud Service Console to open ports to a set of IP addresses. Correct Answer: BC

11 /Reference: : C: SSH is a cryptographic network protocol that uses two keys, one public and one private, to provide secure communication between two networked computers. Port 22 is the standard TCP/IP port that is assigned to SSH servers. B: To access network protocols and services on a compute node by using a port other than port 22, you must either: Enable network access to the port You can use the Oracle Database Cloud Service console to enable access to a port on a compute node. Create an SSH tunnel to the port Creating an SSH tunnel enables you to access a specific compute node port by using an SSH connection as the transport mechanism. To create the tunnel, you must have the SSH private key file that matches the public key specified during the database deployment creation process. References: Using Oracle Database Cloud Service (February 2017), QUESTION 12 A key pair is required to create a Database Deployment. What can the key pair be used for? A. They key pair is used to start up, shut down, and manage EM Express availability. B. The keys are used to control the encryption that is used by Database Deployment: the first is for network encryption and the second is for database encryption. C. The keys replace password use. Database Deployment use only key pairs; password authentication is not enable for SSH default connections. D. Communication between instances in a Database Cloud Service account is controlled by network security rules and security lists. Correct Answer: C /Reference: : Before you create a Database Cloud Service instance you can choose to create a Secure Shell (SSH) public/private key pair. The SSH keys are used to facilitate secure access to the compute nodes that support your database deployments. References: Using Oracle Database Cloud Service (February 2017), QUESTION 13 Which statement is true about Oracle Database Schema Service or Oracle Database Cloud Service in Oracle Public Cloud?

12 A. Database Schema Service requires no database administrators to administer the database. B. Database as a Service (DBaaS) requires no database administrators to administer the database. C. Database as a Service (DBaaS) provides complete database instances with shared control between the subscriber DBA and Oracle Support. D. Database Schema Service provides database schemas with shared control between the subscriber DBA and Oracle Support. Correct Answer: C /Reference: QUESTION 14 You want to make sure that your database administrators have a convenient way to monitor your DBaaS instance. To do so, you need to enable the Oracle DBaaS Monitor. How would you enable the Oracle DBaaS Monitor? A. Use the enable_dbaas_monitor command. B. Create an SSH tunnel to port 443. C. Disable the ora_p2_httpssl security rule in Oracle Compute Cloud Service Console. D. Use the Oracle GlassFish Server Administration Console. E. Add ODBM access to each DBA s user profile. Correct Answer: B /Reference: : To access Oracle DBaaS Monitor when the HTTPS port is blocked, you must create an SSH tunnel to port 443 on the compute node hosting the DBaaS Monitor. Note: How you access Oracle DBaaS Monitor depends on whether the HTTPS port (443) has been unblocked. When a Database Cloud Service deployment is first created, the HTTPS port is blocked to ensure network security Incorrect Answers: C: You should enable the ora_p2_httpssl security rule, not disable it. When a database deployment is created, the following Oracle Compute Cloud Service security rules are created, but set to a disabled status:

13 * ora_p2_httpssl, which controls access to port 443, the port used for HTTPS connections, including Oracle REST Data Services, Oracle Application Express, and Oracle DBaaS Monitor...etc. To enable access to a compute node port, you enable the appropriate security rule. References: QUESTION 15 You are monitoring resource usage on your Database Cloud Service. What two resource usage metrics can you find on the Instance Overview page? A. number of days left on your subscription B. number of processes allocated C. I/O from reads and writes D. memory E. storage F. number of current users Correct Answer: DE /Reference: : The Overview page includes graphs that plot the data values for the top metrics for the past 7 days. The type of data collected and shown depends on the type of service. For example, for Oracle Database Cloud Service, the graphs show Storage Used and Maximum Storage Used. QUESTION 16 You have an Oracle Database 12c on-premise non-cdb database that is running on the AIX platform. Which two methods can be used to migrate the on-premise database to a database that is running in a Database as a Service (DBaaS) instance on Oracle Cloud? A. Remote Cloning B. Transporting Tablespaces by using RMAN convert C. Data Pump D. Transporting Tablespaces by using RMAN backup from platform E. scp file copy

14 Correct Answer: AC /Reference: : You can migrate Oracle Database 12c non-cdb databases from on-premises to Oracle Database 12c databases in Oracle Database Cloud using several different methods including: * Data Pump Conventional Export/Import This method can be used regardless of the endian format and database character set of the on-premises database. * Remote Cloning (non-cdb) This method can be used only if the on-premises platform is little endian, the on-premises database release is or higher, and the on-premises database and Database Cloud Service database have compatible database character sets and national character sets. You can use the remote cloning method to copy an Oracle Database 12c non-cdb on-premises database to your Oracle Database 12c database in the cloud. * RMAN CONVERT Transportable Tablespace with Data Pump This method can be used only if the database character sets of your on-premises database and Oracle Database Cloud Service database are compatible. * RMAN Cross-Platform Transportable Tablespace Backup Sets This method can be used only if the database character sets of your on-premises database and Oracle Database Cloud Service database are compatible. References: QUESTION 17 Your Database Deployment hosts a multitenant container database (CDB) with four pluggable database (PDB) tenants. Users of an application in one PDB and users of another application in another PDB complain of poor performance. Investigation shows that the application sessions are not using excessive CPU nor are they requesting an unusual amount of I/O. Which two steps should you perform to resolve this problem? A. Add storage to the Database Deployment. B. Add CPU to the Database Deployment. C. Examine the shares of resources allocated to each PDB within the CDB.

15 D. Examine the shares of resources allocated to each consumer group within all four PDBs. E. Examine the shares of resources allocated to each consumer group within the PDBs that contain the two applications. F. Add memory to the Database Deployment. Correct Answer: EF /Reference: QUESTION 18 Which two can be increased to scale up the compute shape of a Database Deployment in Oracle Database Cloud Service? A. Add more memory to the Database Deployment by using the Scale up button on the Oracle Database Cloud Service Overview page. B. Add more storage to the Database Deployment by using the Scale up button on the Oracle Database Cloud Service Overview page. C. Add more network adaptors (NICs) to the storage network used by the Database Deployment by using the Scale Up button on the Oracle Database Cloud Service Overview page. D. Add more network adaptors (NICs) to the public access network used by the Database Deployment by using the Scale Up button on the Oracle Database Cloud Service Overview page. E. Add more CPUs to the Database Deployment by using the Scale Up button on the Oracle Database Cloud Service Overview page. Correct Answer: AE /Reference: : Occasionally, the need to scale arises from some change made to the database or backup configuration after it was created. For example, if the decision to use the In-Memory Database option was made after database creation, you might need to scale up the compute shape to one of the high-memory options, such as scaling from "OC4-2 OCPU, 15 GB RAM" to "OC2M - 2 OCPU, 30 GB RAM". Note: To scale the compute shape for a database deployment: 1) View the overview page for the database deployment: a) Open the Oracle Database Cloud Service console. b) Click the name of the deployment you want to scale. The Oracle Database Cloud Service Overview page is displayed Choose the scaling command. The Scale Up/Down Service overlay is displayed. Note that the overlay includes information about the current compute shape.

16 2. Select a new compute shape. 3. Click Yes, Scale Up/Down Service to scale the database deployment. The scaling operation begins. The database deployment is in Maintenance status and unavailable while the scaling operation is in progress. References: QUESTION 19 You are configuring network connections to your database instance. What does each network group represent? A. It is used to allow unrestricted communication among some of your Oracle Database Cloud service instances by using a set of defined policies and access rules. B. It is used to define load balancing and failover configurations between RAC database instances. C. It is used to define network connections to the Pluggable Databases (PDBs) within a Container Database. D. It is used to manage the connections between your external application servers (application servers that you currently use in your business environment) and your Oracle Database Cloud service instances. Correct Answer: A /Reference: : Network groups provide a method for VMs to be grouped together for communications and firewall rules. You can define network groups to allow VMs within a group to communicate with each other, while also preventing those VMs from communicating outside the group. Note: Access rule. Access rules define the permitted paths of communication for VMs that are within a network group. You can define an access rule to enable a specific path of communication between two network groups, or between a network group and a specified list of IP addresses. References: ConfiguringNetworkSettings.html#section2s2

17 QUESTION 20 Which two statements are true about the Database Deployments and Oracle database instances that are provided by Oracle Public Cloud? A. A Database Deployment Virtual Image always provides a pre-created Oracle database. B. An Oracle database instance that is provided as part of Oracle Database Cloud Service runs a different executable than would be run with the same version and release of Oracle Database on private premises. C. A Database Deployment Virtual Image always provides a Linux virtual machine. D. A Database Deployment Virtual Image requires customers to install their preferred version on the Oracle database software. E. Multiple Oracle database instances can run in a Database Deployment on Oracle Public Cloud. Correct Answer: CD /Reference: QUESTION 21 You are creating a new Database Deployment. Which statement is true about connections that are created by default? A. A default network connection is created to your application server. B. A default network connection is created to the other instances that you have created. C. No default connections are created to other Database Deployment or to any external servers. D. All network connections are pre-created within Database Deployment. Correct Answer: C /Reference: QUESTION 22 You get complaints from users of several different applications that performance has degraded over time. These applications run in this configuration: 1. There is one database and database instance, which is an Oracle 12c multitenant Container Database (CDB) with five Pluggable Databases (PDBs).

18 2. One of the poorly performing applications run in one of the PDBs. 3. One of the poorly performing applications runs in a different PDB in the same CDB. 4. You have the Oracle Resource Manager configured for the CDB only. 5. Each PDB has all sessions in one consumer group. A check of wait events for the sessions belonging to these applications shows that the sessions are waiting longer and that there are more sessions from other applications in the same database instance. You wish to avoid scaling up your Database Deployment in Oracle Cloud. Which four should you check and possibly reconfigure to avoid the need to scale up the DBaaS instance? A. Modify the users that are using each application so that their sessions are associated with the correct consumer group in the PDB that is hosting their application. B. Check the CDB plan to configure the shares allocated to all PDBs, including the PDBs that contain the two poorly performing applications. C. Check the CDB plan only to configure the shares allocated to the PDBs that contain the two poorly performing applications. D. Create separate consumer groups for the sessions for all applications in the PDB plans for the PDBs that are hosting the two poorly performing applications. E. Check the PDB plan for all the PDBs in the CDB, including the PDB that is hosting the two poorly performing applications. F. Create a PDB plan for each PDB in the CDB that has poorly performing applications. G. Create a separate CDB plan for each PDB that has poorly performing applications. Correct Answer: ABDF /Reference: QUESTION 23 What are two things can you do on the My Services Dashboard page? A. You can customize the metric icon for each valid service. B. You can add a data center and identity domain to your Cloud account. C. You can activate services for the current data center and identity domain. D. You can check the overall status of your active services for the current data center and identity domain. Correct Answer: CD

19 /Reference: : The My Services Dashboard shows information limited to one identity domain in your account. References: Using Oracle Database Cloud Service (February 2017), page QUESTION 24 The first step to connecting to Oracle Cloud is generating an SSH key pair. To generate a key pair on a Unix or Linux machine, you would run the ssh-keygen utility. What should be the number of bits in the key that must be created? A B C D Correct Answer: C /Reference: : To generate an SSH key pair on UNIX and UNIX-like platforms using the ssh-keygen utility: 1. Navigate to your home directory: $ cd $HOME 2. Run the ssh-keygen utility, providing as filename your choice of file name for the private key: $ ssh-keygen -b t rsa -f filename The ssh-keygen utility prompts you for a passphrase for the private key. 3. Enter a passphrase for the private key, or press Enter to create a private key without a passphrase Etc. References: Using Oracle Database Cloud Service (February 2017), page QUESTION 25 Which three will be supported after migrating an on-premises database to a Database as a Service (DBaaS) instance on Oracle Cloud?

20 A. increased security of application roles B. reduction in operational costs C. ability to increase capacity on demand D. provisioning of application testing E. centralization of database management Correct Answer: CDE /Reference: References: QUESTION 26 Which three statements are true about SSH tunnels in an Oracle Database Cloud Service configuration? A. A separate SSH tunnel is required for each port that is required for the environment. B. The SSH tunnel should include all required ports for the environment. C. The available protocols include ssh-2 DSA. D. The default protocol is ssh-1 RSA. E. The SSH tunnel is opened automatically by the Cloud Services VPN and remains open. F. The SSH tunnel must be opened manually and must remain open. Correct Answer: ACF /Reference: : C:

21 Incorrect Asnwes: B: You can only specify the source port, and the destination port. D: The default protocol is ssh-2 RSA- References: QUESTION 27 Which three statements are true about the service levels provided by Database Cloud Service (DBCS)?

22 A. The Virtual Image service level provides a pre-created database. B. The Virtual Image service level provides tools for backups and patching. C. The automated service provides a pre-installed virtual machine image. D. The automated service provides a pre-created database. E. The cloud tooling within the automated service level provides a tool for point-in-time database recovery. Correct Answer: BDE /Reference: : Incorrect Answers: A: When you create a database deployment on Oracle Database Cloud Service using the Virtual Image service level, Oracle Database is not automatically installed, nor is a database created. References: QUESTION 28 Which statement is true about Oracle Database Schema Service or Oracle Database Cloud Service (DBCS)? A. Oracle Database Cloud Service does not require database administrators to administer the database. B. Oracle Database Schema Service requires a database administrator to administer the schemas. C. Oracle Database Cloud Service provides complete dedicated database instances with full administrative control for a subscriber. D. Oracle Database Schema Service provides database schemas with full administrative control for a subscriber. Correct Answer: A /Reference: : Database Schema Service is an individual service within the Oracle Cloud. Data within an individual Database Schema Service is completely separated from data in all other services in the Oracle Cloud. Database Schema Service administrators can define users for the services that they administer. References:

23 QUESTION 29 You created your Database as a Service (DBaaS) database instance. Predefined network access rules are also created. Which two predefined network access rules are created when you created the DBaaS database instance? A. The ora_p2_ssh security rule for the public-internet network group is created to communicate with the ora_db predefined network group over SSH. B. The ora_db_public security rules to manage database access through the default port 1521 and the ora_db_admin security rules for SSH connection via SQL*Net through port 5500 are created. C. The ora_access db security rule for SSH connection via PuTTY is created to configure network rules and ora_access_console for HTTPS access to Oracle Cloud Services Console. D. No security rules are created by default and users must manually configure all access rules. E. The ora_p2_dblistener security rule for the public-internet network group (any host on the Internet) is created to communicate with the ora_db predefined network group over SQL*Net. Correct Answer: AE /Reference: : When a database deployment is created, the following Oracle Compute Cloud Service security rules are created, but set to a disabled status. ora_p2_dbconsole, which controls access to port 1158, the port used by Enterprise Manager 11g Database Control. ora_p2_dbexpress, which controls access to port 5500, the port used by Enterprise Manager Database Express 12c. ora_p2_dblistener, which controls access to the port used by SQL*Net. ora_p2_http, which controls access to port 80, the port used for HTTP connections. ora_p2_httpssl, which controls access to port 443, the port used for HTTPS connections, including Oracle REST Data Services, Oracle Application Express, and Oracle DBaaS Monitor. References: References: Using Oracle Database Cloud Service (February 2017), page A-5 QUESTION 30 You want to apply a patch to your Oracle Database Cloud Database as a Service. What command will you execute to patch your database instance? A. dbaascli dbpatchm --run -config B. dbaascli dbpatchm --run -setup C. dbaascli dbpatchm --run -apply

24 D. dbaascli dbpatchm --run -patch Correct Answer: C /Reference: : Options of the command: dbaascli dbpatchm apply applies the patch. clonedb applies a patch to a test deployment. list_patches displays a list of available patches. list_tools checks whether any cloud tooling updates are available. prereq checks the prerequisites of a patch. rollback rolls back the last deployment patch. switchback restores database software to a prior state. toolsinst downloads References: References: Using Oracle Database Cloud Service (February 2017), page D-1 QUESTION 31 You want to control network traffic among your DBaaS instances. Which two statements are true about network groups? A. By default, the DBaaS instances in a network group are accessible from hosts outside the network group. B. You can add a DBaaS instance to a network group, but this enables communication only within this network group. C. You can add a DBaaS instance to a network group, thus enabling communication with all other DBaaS instances both inside and outside the network group. D. You can create a network group to enable unrestricted communication among your DBaaS instances. E. DBaaS prevents network groups from having unrestricted communication among DBaaS instances. Correct Answer: BE /Reference: : Network groups provide a method for VMs to be grouped together for communications and firewall rules. You can define network groups to allow VMs within a group to communicate with each other, while also preventing those VMs from communicating outside the group.

25 Note: Access rule. Access rules define the permitted paths of communication for VMs that are within a network group. You can define an access rule to enable a specific path of communication between two network groups, or between a network group and a specified list of IP addresses. References: ConfiguringNetworkSettings.html#section2s2 QUESTION 32 You use GUI tools on the Virtual Machine to create and administer the Database as a Service (DBaaS) databases. You wish to use the Oracle Database Configuration Assistant (DBCA) to create a database instance. To run DBCA, you will need to use an SSH connection. You need to perform several steps to establish this connection in DBCA and to create the database. What are two of these steps? A. Connect to the DBaaS instance with the SSH terminal session as the oracle user. B. Configure a PuTTY or SSH session to perform X11 forwarding. C. Install an Xterminal program if required. D. Update the tnsnames.ora file with the name of the service to which you want to connect. Correct Answer: AB /Reference: : Example: To create a database into your Oracle Database Cloud Service 1. You have created a PuTTY definition for connecting through an SSH tunnel to your Database Cloud Service (DBaaS) instance. Now open this definition to connect to the VM.

26 2. Because this is not the first time you are connecting to the VM, the SSH utility does not prompt you to confirm the public key. If it were the first time, the SSH utility would have prompted you to confirm the public key. You would have confirmed by clicking Yes.

27 3. You can now launch DBCA either in silent mode or in graphical mode. References: QUESTION 33 Which two must be true when you migrate an Oracle Database non-cdb to a database that is running in a Database as a Service (DBaaS) instance on Oracle Cloud by using the Remote Cloning method? A. The non-cdb may be opened in READ WRITE mode as long as ARCHIVELOG is enabled. B. The database link owner must have the CREATE PDB system privilege. C. The source platform must have the same endian format. D. The non-cdb must be in archivelog mode. E. The non-cdb must be opened in READ ONLY mode. F. The database link owner must have the CREATE PLUGGABLE DB system privilege. Correct Answer: EF

28 /Reference: : To migrate an Oracle Database 12c non-cdb database to a Database Cloud Service database deployment using the remote cloning method, you perform these tasks: 1. On the on-premises database host, invoke SQL*Plus and set the on-premises database to READ ONLY mode. 2. On the Database Cloud Service compute node, invoke SQL*Plus and create a database link that enables a connection to the on-premises database. 3. On the Database Cloud Service compute node, execute the CREATE PLUGGABLE DATABASEcommand to clone the on-premises non-cdb database. 4. On the Database Cloud Service compute node, execute the $ORACLE_HOME/rdbms/admin/noncdb_to_pdb.sql script. 5. On the Database Cloud Service compute node, open the new PDB by executing the ALTER PLUGGABLE DATABASE OPEN command. 6. Optionally, on the on-premises database host invoke SQL*Plus and set the on-premises database back to READ WRITE mode. You can use this method only if the on-premises platform is little endian, the on-premises database release is or higher, and the on-premises database and Database Cloud Service database have compatible database character sets and national character sets. References: QUESTION 34 Which two tasks can you perform on the Database Cloud Service Instance View page? A. You can add pluggable databases (PDBs) to the database. B. You can decrease the storage of an instance. C. You can see patching information. D. You can create new users to access an instance. E. You can scale up to increase the shape of the current instance. Correct Answer: CD /Reference: References:

29 QUESTION 35 Which three are ways to scale a Database as a Service (DBaaS) instance that is hosting three Oracle 12c databases? A. Add additional virtual network interfaces (VNICs) to the DBaaS instance. B. Increase the MEMORY_TARGET parameter value in each database instance that is running on the DBaaS instance. C. Increase the CPU_COUNT parameter value in each database instance that is running on the DBaaS instance. D. Increase the number of CPUs allocated to the DBaaS instance. E. Add storage to the DBaaS instance. F. Use the Oracle Database 12c In-Memory database option in each database instance that is running on the DBaaS instance. G. Increase the memory allocated to the DBaaS instance. Correct Answer: DEG /Reference: QUESTION 36 Which two statements are true about a Database Deployment in Oracle Public Cloud? A. A Secure Shell (SSH) key is provided by Oracle for accessing the DBaaS environment as the first step in creating a DBaaS instance. B. The billing frequency depends on the Oracle database software edition that is selected for the DBaaS instance. C. The public SSH key is provided when configuring the database in the DBaaS instance. D. Storage configuration must be selected for the DBaaS instance. E. The database that is configured may be an Oracle 11g database. Correct Answer: AE /Reference: : E: Onwizard Software Release page page to select the Oracle Database software release that you want to run on your instance.

30 Note: When you create a database instance, you use the Create Database Cloud Service wizard, which steps you through the process of making the choices that produce a service instance tailored to your needs. These choices include: Service Level Billing Frequency Oracle Database Release Version Oracle Database Edition Computing Power Database Storage Backup and Recovery Configuration Incorrect Answers: B: Use the Subscription Type page, of the Create Database Cloud Service wizard, to select the service level and billing frequency.

31 D: Storage is not configured. You configure the Instance, the Database, and Backup and recovery. References: QUESTION 37 Which two statements are true about Database as a Service (DBaaS) Oracle Database Cloud Service or about Oracle Database Schema Service in Oracle Public Cloud? A. With Oracle Database Schema Service, there is a separate database for each schema. B. With Oracle Database Cloud Service, you get a dedicated database instance or instances. C. With Oracle Database Schema Service, the schema or schemas may be in the same database as other schemas that belong to other subscribers. D. With Oracle Database Cloud Service, you cannot decide when to patch the database home. E. With Oracle Database Schema Service, the schema may be in an Oracle Database 12c pluggable.

32 Correct Answer: BC /Reference: : Database Schema Service uses schema isolation to implement multi-tenancy, which allows full transparency while still providing efficient use of database resources. The Oracle Database is, at its core, a multiuser system for sharing data, so Database Schema Service simply uses the capabilities built up for the Oracle Database to share resources among multiple Database Schema Service customers. Incorrect Answers: E: Oracle Database Cloud - Database Schema Service has four main components: Oracle Database 11gR2 Enterprise Edition. Oracle Application Express 5. Used to create and deploy all varieties of applications in a browser-based environment. RESTful Web Services. Allows access to the data in your Database Schema Service through simple URIs. Packaged Applications and Sample Code. References: QUESTION 38 You want to access your database over SQL*Net with a client application that is running locally on your machine. How would you enable access to port 1521 of the Compute Node (VM)? A. Use Oracle Compute Cloud Service to enable the ora_p2_dblistener security rule. B. Run the lsnrctl reload listener command. C. Use the Application Express Console to start the listener application. D. Change the firewall rules. Correct Answer: D /Reference: : The DBaaS services are run under the Oracle Compute Cloud (IaaS). This has it's own firewall configuration, allowing you to limit access to your services. By default, all endpoints except SSH are disabled. There are a number of predefined "Security Rules" to open up the assorted endpoints, but they typically open the endpoints to public, which is rather risky. Instead, you should define custom rules, opening access to ports from specific machines. Navigate to the main "Oracle Database Cloud Service". Click on the hamburger next to the service of interest.

33 Click the "Access Rules" option on the popup menu. Click the "Create Rule" button. Enter a "Rule Name". Select "" as the "Source" and enter your IP address in resulting box. Select "DB" as the "Destination". Enter "1521" as the "Destination Port(s)". Leave "TCP" as the "Protocol". Click the "Create" button. You should now be able to connect to the database from the specified IP address. References: QUESTION 39 You have an Oracle Database 11g on-premises database with encrypted tablespaces. You want to migrate this database to the pre-created database of the Database as a Service (DBaaS) instance on Oracle Cloud. Which two statements are true about this migration? A. The on-premises database platform must be of the same endianness as the DBaaS platform. B. You can use Full Transportable (TDB). C. You can use Data Pump TTS with the ENCRYPTION_PASSWORD parameter. D. You can use Data Pump TTS with the ENCRYPTED_PASSWORD parameter. E. Data is sent in clear when the NETWORK_LINK option is used. Correct Answer: AC /Reference: : The Data Pump Transportable Tablespace method can be used only if the on-premises platform is little endian, and the database character sets of your onpremises database and Oracle Database Cloud Service database are compatible. Note: If the job you are attaching to was initially started using an encryption password, then when you attach to the job you must again enter the ENCRYPTION_PASSWORD parameter on the command line to re-specify that password. The only exception to this is if the job was initially started with the ENCRYPTION=ENCRYPTED_COLUMNS_ONLY parameter. In that case, the encryption password is not needed when attaching to the job. References: QUESTION 40

34 You did not configure Backup and Recovery during instance creation. You therefore need to schedule your backup strategy with RMAN. Which two tasks would you need to perform to customize the backup configuration? A. Use the bkup_api utility logged in as the oracle user to reconfigure the retention period and cycle period of the backups. B. Edit the /home/oracle/bkup/oscfg.spec specification file that is used by the DBaaS backup feature to maintain the list of system files and folders that are to be backed up. C. Edit the /home/oracle/bkup/dbcfg.spec specification file that is used by the DBaaS backup feature to maintain the list of database configuration files that are to be backed up. D. Use dbms_scheduler to perform automatic backups. Correct Answer: AC /Reference: : A: You can use the bkup_api utility to create an on-demand backup of a database deployment hosting a single-instance database or an Oracle Data Guard configuration. By default, the backup is given a timestamp-based tag. To specify a custom backup tag, add the --tag option to the bkup_api command; for example, to create a longterm backup with the tag "monthly", enter the following command: # /var/opt/oracle/bkup_api/bkup_api bkup_start --keep --tag=monthly C. Customizing Which Database Configuration Files Are Backed Up To change which database configuration files are backed up: 1. Connect as the oracle user to the compute node. For detailed instructions, see Connecting to a Compute Node Through Secure Shell (SSH). 2. Edit the contents of the /home/oracle/bkup/dbcfg.spec file: The backup feature provided by Oracle Database Cloud Service backs up the files and folders listed in this specification file. References: Using Oracle Database Cloud Service (February 2017), pages 6-4, QUESTION 41 Which three statements are true about the Oracle Cloud Service storage volumes that are created as part of a Database Deployment in Oracle Public Cloud? A. The database data file storage and the tempfile storage are placed on the same storage volume. B. The database backup storage and the redo log storage are placed on the same storage volume. C. The Oracle database product software storage and the database data file storage are placed on the same storage volume.

35 D. The database backup storage and the database product software storage are placed on different storage volumes. E. The database data file storage and the redo log storage are placed on different storage volumes. Correct Answer: ADE /Reference: : Compute Cloud Service Storage Volumes When a Database Cloud Service deployment is created using the Oracle Database Cloud Service service level, the following storage volumes are created.

36 References: Using Oracle Database Cloud Service (February 2017), page A-3 QUESTION 42 Which two statements are true about the Database Deployments and Oracle database instances that are provided by Oracle Public Cloud? A. A Database Deployment requires customers to install any additional management tools for their environment.

37 B. A Database Deployment never provides a pre-created Oracle database software. C. An Oracle database instance that is provided as part of Oracle Database Cloud Service runs the same executable that would be run with the same version and release of Oracle Database on private premises. D. A Database Deployment always provides a customer-selected version of the Oracle database software. E. Only one Oracle database instance can run in a Database Deployment on Oracle Public Cloud. Correct Answer: CD /Reference: : D: The wizard's Software Release page is used to select the Oracle Database software release that you want to run on your instance. On the Software Edition page select the Oracle Database software edition that you want to run on your instance.