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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q56-Q61):

NEW QUESTION # 56
How do ASM failure groups provide redundancy?

• A. Extended Redundancy mirrors data across data centers providing the highest levels of data protection.
• B. They ensure that the ASM Flex instances are enabled on a maximum of two database servers or VMs per cluster.
• C. Failure groups are created for each grid disk to ensure mirror copies are written to the same storage server for faster recovery after a physical disk failure.
• D. Failure groups contain all ASM disks in a single storage server preventing mirror copies being written to the same storage server.

Answer: D Explanation:
In an Automatic Storage Management (ASM) environment, failure groups are used to provide redundancy for the storage disks. Failure groups are used to group together a set of disks and ensure that no two copies of the same data are stored on the same physical disk or storage server. This way, if a disk or storage server fails, the data can still be accessed from the other copy.
For example, if the disks in a failure group are mirrored, one copy of the data is stored on one set of disks, and the other copy is stored on another set of disks. This way, if a disk or storage server fails, the data can still be accessed from the other copy.
ASM failure groups also provide the option to spread the data across different storage servers, this way, even if a storage server fails, data can still be accessed from the other storage servers in the group. This will improve the availability of the data.
NEW QUESTION # 57
You have configured a multirack Database Machine with two X9M-8 full racks all in a single cluster and storage grid comprising a total of 4 X9M-8 Database servers and 28 X9M-8 Storage servers.
Which two options are true regarding the servers on which Enterprise Manager agents must be deployed in order to monitor all components of this multirack configuration?

• A. on all database servers in the first rack
• B. on all database servers in both racks and one storage server in each rack
• C. on at least two storage servers in both racks
• D. on all storage servers in both racks
• E. on only one database server in both racks
• F. on all database servers in the second rack
• G. on all database servers and at least two storage servers in both racks

Answer: A,D
NEW QUESTION # 58
You have been tasked with replacing a memory module of an Exadata Storage Server and need to power off the affected storage server. Which two commands must you execute to safely power off the storage server in an Exadata X9M Database Machine?

• A. CellCLI alter GRIDDISK all inactive on the affected storage server
• B. CeLLCLI> alter cell shutdown SERVICES all on the affected storage server
• C. CeLLCLI> list GRIDDISK where status != 'inactive' on the affected storage server
• D. 'crsct1 stop cluster -all' on one of the database servers
• E. shutdown -h now' on the affected storage server
• F. CellCLI LIST GRIDDISK ATTRIBUTES name WHERE asmdeactivationoutcome != 'Yes' on the affected Storage server

Answer: A,E Explanation:
https://docs.oracle.com/en/engineered-systems/exadata-database-machine/dbmmn/maintaining-exadata-storage-servers.html#GUID-AE16A1DA-53C6-4E80-94E5-963AA65373AB The two commands that must be executed to safely power off the storage server in an Exadata X9M Database Machine are E and F.
Command E, CellCLI alter GRIDDISK all inactive, will deactivate all of the GRIDDISKS on the affected storage server. This will ensure that no data is lost during the power-off process.
Command F, shutdown -h now, will shut down the storage server. This will ensure that the storage server is completely powered off and no data is lost.
For more information on how to properly power off an Exadata Storage Server, refer to the Oracle Exadata Database Machine X9M Implementation Essentials official text book and resources [1][2].
NEW QUESTION # 59
Which are two correct statements about backing up Exadata Database Machine?

• A. Use a snapshot-based backup of an Oracle Exadata Database Machine database server software.
• B. Backing up Exadata Storage Server Software is critical for restoration.
• C. The M.2 disk is hot pluggable and can be replaced when the power is on, but you will have to restore the system data manually.
• D. Backup of the Oracle Cluster Registry, which also contains Voting Disk information, is automatically maintained on the file system of the first database server.
• E. For high availability, system area can be on the first two disks and M.2 devices.

Answer: A,C
NEW QUESTION # 60
You have been tasked with replacing a memory module of an Exadata Storage Server and need to power off the affected storage server. Which two commands must you execute to safely power off the storage server in an Exadata X9M Database Machine?

• A. CeLLCLI> alter cell shutdown SERVICES all on the affected storage server
• B. CeLLCLI> list GRIDDISK where status != 'inactive' on the affected storage server
• C. 'crsct1 stop cluster -all' on one of the database servers
• D. shutdown -h now' on the affected storage server
• E. CellCLI alter GRIDDISK all inactive on the affected storage server
• F. CellCLI LIST GRIDDISK ATTRIBUTES name WHERE asmdeactivationoutcome != 'Yes' on the affected Storage server

Answer: D Explanation:
https://docs.oracle.com/en/engineered-systems/exadata-database-machine/dbmmn/maintaining-exadata-storage-servers.html#GUID-AE16A1DA-53C6-4E80-94E5-963AA65373AB
NEW QUESTION # 61
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