B. Using Data Guard Physical Standby to migrate from an 11.1 database to Exadata is beneficial because it allows you to adopt HCC during migration.

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1 Volume: 71 Questions Question No : 1 Which two statements are true about migrating your database to Exadata? A. Because Exadata uses InfiniBand, in order to migrate your database to Exadata, you must have InfiniBand on the system that you are migrating from. B. Using Data Guard Physical Standby to migrate from an 11.1 database to Exadata is beneficial because it allows you to adopt HCC during migration. C. ASM and database best practice configuration supplied during Exadata deployment should be retained during and after migration, D. Logical migration methods allow more flexibility than physical methods to change the database structure for best performance. E. All indexes should be dropped when migrating to Exadata. Answer: CD Question No : 2 You are concerned about how recovery from a failed Exadata Storage Server would work. Which statement is true about the Exadata CELLBOOT USB? A. Exadata automatically copies OS binaries and configuration files from another cell during patching to sync the internal USB. B. Regular Exadata Storage Server patches make sure that the internal USB is updated so that it can be used for recovery. C. Changes to network configuration files are possible without using ipconf.pl as long as all relevant files are updated. D. Some space from the CELLBOOT USB is used for cache metadata when write back flash cache is enabled. E. Each patch that is performed on Exadata storage servers requires manual resync of the CELLBOOT USB. Answer: A,C

2 Question No : 3 Your customer wants to increase the size of the DATA diskgroup on the Exadata systems. The customer is currently using 600 GB disks. Which two are the best options that you would recommend? A. adding a High Capacity Storage expansion rack B. expanding the Exadata rack from a Half Rack to a Full Rack C. moving underutilized grid disks from the RECO diskgroup to DATA D. adding a ZFS storage appliance E. adding a High Performance Storage expansion rack Answer: A,B Question No : 4 Which two statements describe correct network configuration for Exadata Database Machine? A. The InfiniBand network subnet manager runs on all database servers to achieve High Availability. B. Oracle Clusterware communication is configured to use the management network. C. The InfiniBand network interfaces on Linux servers are configured using active-passive bonding. D. Database connections to the SCAN listener route through the Ethernet switch in the Exadata rack. E. Database servers are deployed with three logical network interfaces configured: management, client access, and private. Answer: C,D Question No : 5 How does partition pruning, a 11gR2 database feature, help to improve performance on an Exadata Database Machine? A. Partition pruning allows you to reduce a 5 TB I/O operation to a much smaller I/O operation and therefore, enables a much faster return of information. B. Using partition pruning can force the optimizer to use that method instead of Smart Scan. Partitioning in Exadata should be used wisely,

3 C. Partition pruning is not a supported option in the 11gR2 database code that runs on an Exadata Machine, due to issues with Cost Based Optimizer plans. D. Partition pruning allows you to reduce the size of the physical table by reducing fragmentation within the individual tables. E. Partition pruning allows you to reduce a 5 TB I/O operation to a larger I/O operation and therefore, forces the use of the Smart Scan technology. Answer: A Question No : 6 How would you execute CellCLI commands and scripts? A. using SQL*Plus on database nodes B. by CellCLI commands executed on the database nodes C. using third party tools after installing the CellCLI RPM plug-in D. directly executing the commands and scripts on the Exadata storage cell E. remotely by connecting to Port 1521 using SSL Answer: D Question No : 7 Which statement is true about Exadata Storage Servers? A. The Exadata Storage Server automatically deletes old diagnostic and metric files. B. Exadata requires a running database instance on all storage servers and database servers. C. Redundancy for user data stored in a database that is running on Exadata is achieved with RAID5. D. Communication between a database and an Exadata storage flows over low latency 10 Gigabit Ethernet. E. Exadata uses network affinity to determine which storage server data is written. Answer: C

4 Question No : 8 Identify three Exadata Storage Server software processes and their purpose? A. CELLSRV: The Cell Server is responsible for servicing disk I/O and predicate processing offload. B. CELLSRV: The Cell Server is responsible for balancing workload to other storage servers. C. MS: The Management Server is responsible for storage cell management and configuration. D. MS: The Management Server is responsible for starting a local Enterprise Manager agent. E. RS: The Restart Server is responsible for Automatic Storage Management (ASM) instance restart. F. RS: The Restart Server is responsible for CELLSRV and MS monitoring and restart. Answer: A,C,F Question No : 9 Consider this CellCLI command: CellCLI> CREATE GRIDDISK ALL HARDDISK PREFIX=data, size=423g; Which two statements describe what happens when you execute this command? A. It creates one 423 GB grid disk on the first available cell hard disk. B. It creates one 423 GB grid disk on each available cell hard disk. C. It creates grid disks on the outermost 423 GB that is available on each hard disk. D. It creates grid disks on the innermost 423 GB that is available on each hard disk. E. It creates an Exadata Smart Flash Cache on all flash drives. Answer: B,C Question No : 10 Identify a recommended configuration to set up Auto Service Request (ASR) for Exadata. A. Install ASR Manager on Exadata Database Server. B. Install ASR Manager on Exadata Storage Server.

5 C. ASR is not recommended for Exadata; the Oracle Configuration Manager is preferred. D. Install ASR Manager on a Standalone Server. Answer: D Question No : 11 You are concerned about how to recover from a failed Exadata Storage Server. What is the best way to recover from a storage cell failure when content in both system disks is lost? A. Database Machine Administrators should be prepared by creating a backup using dbserver_backup.sh. B. Database Machine Administrators should be prepared by creating a backup to an NFS file location as described in the owners guide. C. Any USB can be plugged in to create a backup. D. Be sure that you have a backup by running make_cellboot_usb.sh in /opt/oracle.cellos. E. Use the Exadata Storage Server rescue functionality that Is provided on the CELLBOOT USB flash drive. F. Re-imaging the cell is the only option. Answer: E Question No : 12 A customer has three databases named CC. FIN, and DW. The CC database is for their CallCenter. Even a slight decrease in the response time of the database would mean more people "on hold" in their data center. The orders received through the CallCenter are stored in the Finance (FIN) database. Both databases, CC and FIN, serve as sources for the Data Warehouse (DW) database. All databases use the same Automatic Storage Management (ASM) diskgroup and therefore, the same physical disks on Exadata storage. The customer wants to dynamically control the resources that are available for the CallCenter database because this has direct impact on their operations? Which option should be implemented? A. DBRM on the CC database B. DBRM on all the databases

6 C. IORM, because DBRM cannot be changed for an existing session D. IORM and DBRM Answer: B Question No : 13 Which two statements are true about Exadata memory capabilities? A. X3-8 can be purchased in a Half Rack configuration with 2 TB of memory. B. X3-2 memory can be expanded to 512 GB per node from 256 GB. C. X3-2 memory can be upgraded to use Flash in the compute nodes. D. X3-8 memory is fixed at 4 TB per a Rack. E. X3-2 can be purchased in a Half Rack configuration with 256 GB per node. Answer: D,E Question No : 14 You are asked to enable Write Back Flash Cache for one of your customers X3-2 Full Rack in a rolling fashion. Put the following steps in the right order: A) Set flashcachemode to writeback. B) Inactivate all grid disks and shut down cellsrv. C) Drop the Flash Cache. D) Verify that cell for flashcachemode is writeback. E) Create the Flash Cache. F) Start up cellsrv and activate all grid disks. G) Check grdidksk asmdeactivationoutcome and asmmodestatus for all grid disks to ensure that all grid disks on all cells are set to Yes and online, respectively. A. G. B, C, A, F, E, D, and G B. G, A, B, C, F, E, D, and G C. G, C, B, A, F, E, D, and G D. G, E, C, B, F, A, D, and G

7 Answer: C Question No : 15 What are the three customer options for hosting the Platinum Services Advanced Support Gateway? A. Install on Exadata Engineered System. B. Provide individual x86 64-Bit gateway hardware. C. Install in Oracle Virtual Machine with required hardware. D. Install on Oracle Database Appliance. E. Purchase the recommended x86 64-Bit gateway hardware from Oracle. Answer: A,C,E Question No : 16 Identify two tasks that the Database Resource Manager can perform, which the I/O Resource Manager cannot. A. Manage I/O based on the application that is connected to the database. B. Manage the number of parallel sessions for a query. C. Manage I/O and CPU between databases on the same cluster or physical database host. D. Terminate database sessions when certain limits have been reached. E. Manage the throughput of an I/O-bound application based on the service name used for the connection. Answer: B,D Question No : 17 Which statement is true about instance caging setup? A. Instance caging is the right approach to make sure that database instances are not stealing memory from each other.

8 B. The CPU Resource Manager and IORM need to be enabled to make instance caging to work as expected. C. Database instances need to be restarted to make changes to cpu_count effective. D. For a system with 16 threads, the sum of cpu_count for all databases should not be higher than 32 to prevent oversubscribing E. The init.org parameter resource_manager_plan should be set. Answer: D Question No : 18 Which CellCLI command is used to conclude that a storage server can be taken offline without impacting database availability? A. LIST GRIDDISK ATTRIBUTES name, asmdeactivationoutcome; B. LIST CELLDISK ATTRIBUTES name, raidlevel; C. LIST CELL ATTRIBUTES cellsrvstatus, flashcachemode; D. LIST CELLDISK ATTRIBUTES name, raidlevel, asmmodestatus; E. LIST GRIDDISK ATTRIBUTES name, status; Answer: A Question No : 19 If your customer wants to save storage space by compressing tables that are read frequently but rarely updated, which compression technique would you recommend? A. OLTP B. ARCHIVE HIGH C. QUERY HIGH D. ARCHIVE LOW E. BASIC

9 Answer: B Question No : 20 Your customer has purchased their brand new Exadata Database Machine X3-2 Full rack to achieve 20-TB-per-hour backups on their 300 TB database. You have been called to determine why they are not able to achieve even half that rate. Use the information in the image below to identify two reasons their backups are still slow. A. The Media Server to Tape Library transfer is causing a bottleneck. B. The number of tape drives is causing a bottleneck. C. Exadata backups are being performed using RMAN over the 10 Gigabit Ethernet network. D. The number of database servers is causing a bottleneck. Answer: B,C Question No : 21 Which Exadata feature uses Flash as a parallel write cache to Disk Controller Cache? A. Exadata DRAM B. InfiniBand network cache C. high performance SAS disks D. Smart Flash Log E. Hybrid Columnar Compression

10 Answer: D Question No : 22 Identify the correct steps required to upgrade a 1/8th rack of Exadata to a 1/4th rack. A. Activate all cores by using a software command. Activate all hard drives and flash drives. Create the grid disks. Expand the Oracle ASM diskgroups. Review the new configuration. B. Remove the doors of the 1/8th rack. Add an additional Sun Datacenter InfiniBand Switch. Add the new servers. Cable the Database Servers in the rack. Cable the Exadata Storage Servers in the rack. Close the rack. Configure the new hardware. C. Activate all cores by using a software command. Activate all hard drives and flash drives. Answer: B Question No : 23 When an Exadata Storage Server hard disk failure alert is received, what manual action must you take to restore the system to full redundancy? A. Replace the disk and run MegaCLI to rebuild the degenerate mirror. B. No manual action is required because Automatic Storage Management (ASM) fast mirror resync is automatic C. No manual action is required because ASM rebalancing is automatic. D. Replace the disk and manually copy the mirror extents to the new drive. E. Run RMAN REPAIR FAILURE. Answer: C