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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q29-Q34):

NEW QUESTION # 29
Which are two valid reasons for executing an X9M-2 Exadata storage server rescue procedure?

• A. the failure of physical disk 0 and 11
• B. accidental loss of all data from all griddisks in a storage server
• C. the failure of physical disk 1
• D. corruption in a normal or high redundancy ASM diskgroup
• E. the failure of both physical M.2 disks
• F. corruption in the / (root) filesystem
• G. moving all disks from one cell to another as part of a chassis-level component failure

Answer: A,F Explanation:
The rescue procedure is necessary when system disks fail, the operating system has a corrupt file system, or there was damage to the boot area. If only one system disk fails, then use CellCLI commands to recover. In the rare event that both system disks fail simultaneously, you must use the Exadata Storage Server rescue functionality provided on the Oracle Exadata Storage Server Software CELLBOOT USB flash drive.
NEW QUESTION # 30
Which are two correct statements for managing virtual deployment using Oracle Exadata Deployment Assistant (OEDA)?

• A. OEDA deployment steps include calibrate cells, create cell disks, and resecure machine.
• B. OEDA allows customers to have both bare metal (BM) and virtual machine (VM) in an Exadata X9M Quarter Rack.
• C. OEDA sets up key-based authentication for the root user by using the setuprootssh.sh utility included with OEDA.
• D. There is no limit on the number of VMs in an Exadata rack as long as the Exadata rack has adequate resources.

Answer: A,C Explanation:
1. OEDA deployment steps include calibrate cells, create cell disks, and resecure machine2.
2. OEDA sets up key-based authentication for the root user by using the setuprootssh.sh utility included with OEDA2.
NEW QUESTION # 31
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: C,D
NEW QUESTION # 32
You are hardening the security posture of your Exadata Database Machine. Before disabling ssh access to the storage servers, what should you do to enable REST access to the MS process?

• A. Install Oracle Rest Data Services on each Database server and install the MS APEX application.
• B. The MS Process on the storage servers is natively endowed with REST services, but are not enabled by default.
• C. Install Oracle Rest Data Services on each Storage server and install the MS APEX application.
• D. The MS Process on the storage servers is natively endowed with REST services and are enabled by default, however, appropriate roles and users should be created to ensure security.

Answer: B Explanation:
To enable REST access to the MS process, you need to manually enable the REST services on each storage server by running the command cellcli -e "ALTER CELL ENABLE REST" and then configure authentication and authorization to ensure secure access. This is described in detail in the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book (Chapter 8, Securing the Exadata Database Machine).
NEW QUESTION # 33
Which three statements are true about the CELLCLI command?

• A. It requires root privileges to create CELLDISKS and GRIDDISKS.
• B. It can be executed on storage servers.
• C. It has command-line history.
• D. It can execute commands on multiple storage servers in parallel.
• E. It can be executed using the DCLI utility.

Answer: B,C,E Explanation:
The CellCLI utility supports command-line history.
Each Exadata Storage cell can be monitored, configured, and maintained using the cellcli command line interface.
The dcli utility facilitates centralized management across an Oracle Exadata Storage Server Software realm by automating the execution of CellCLI commands on a set of cells and returning the output to the centralized management location where the dcli utility was run.
NEW QUESTION # 34
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