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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q75-Q80):

NEW QUESTION # 75
Which two statements are true about Auto Service Request (ASR) with an Exadata Database Machine?

A. Configuring ASR is mandatory for all Database Machine assets.
B. ASR Manager must be installed and configured on a dedicated server external to the Database Machine.
C. ASR Manager opens a service request (SR) automatically after sensors detect hardware faults.
D. ASR communicates with Oracle support services using HTTPS.
E. ASR Manager must be installed and configured on one of the database servers.
F. ASR can upload configuration metadata to support problem resolution.

Answer: B,E

NEW QUESTION # 76
You have been notified by your Network Administrator that an upstream switch has been replaced due to a hardware fault. Which command verifies that the client network on your Exadata X9M-2 Database Server is available via both client switches?

A. /opt/oracle.SupportTools/ibdiagtools/checkbadlinks.p1 -all
B. netstat -rn
C. ifconfig -a legrep "re0| re1"
D. cat /proc/net/bonding/bondeth0

Answer: A

Explanation:
The checkbadlinks.pl script is a tool provided with the Exadata X9M-2 Database Server that allows you to verify the status of the InfiniBand links between the Database Server and the client switches. This script checks for bad links, and it can be used to identify any issues with the client network connectivity. To use the script, you can navigate to the directory where it is located, which is /opt/oracle.SupportTools/ibdiagtools/ and execute the command ./checkbadlinks.pl -all. This will give you a summary of the status of the links and it will indicate if there are any bad links. This command will check the client network on your Exadata X9M-2 Database Server is available via both client switches. Other commands like ifconfig, netstat and cat are not relevant to check the client network on Exadata X9M-2 Database Server

NEW QUESTION # 77
Which are two valid reasons for executing an X9M-2 Exadata storage server rescue procedure?

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

Answer: B,D

Explanation:
The two valid reasons are:
corruption in the / (root) filesystem . According to 1, this is one of the scenarios that requires a storage server rescue procedure , because it prevents the storage server from booting up normally . The rescue procedure will re-image the root filesystem with a fresh copy of the operating system and restore the configuration files from a backup1.
the failure of both physical M.2 disks . According to 2, each Exadata Storage Server X9M-2 has two physical M.2 disks that store the operating system and configuration files for the storage server . If both M.2 disks fail , then the storage server cannot boot up or function properly . The rescue procedure will replace the failed M.2 disks with new ones and re-image them with the operating system and configuration files2.

NEW QUESTION # 78
What is the maximum DRAM capacity you can expand an X9M-2 DB Server?

A. 512GB
B. 1024GB
C. 1536GB
D. 2048GB
E. 768GB
F. 384GB

Answer: D

Explanation:
The Exadata X9M-2 Database Machine uses powerful database servers, each with two 32-core x86 processors and 512 GB of memory (expandable up to 2 TB).

NEW QUESTION # 79
How do ASM failure groups provide redundancy?

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

Answer: A

Explanation:
According to Oracle's documentation12, ASM failure groups provide redundancy by storing mirror copies of data on different disks or storage servers. When ASM allocates an extent for a normal redundancy file, ASM allocates a primary copy and a secondary copy. ASM chooses the disk on which to store the secondary copy so that it is in a different failure group than the primary copy1. This way, if one disk or storage server fails, ASM can still access the data from another failure group2.
Therefore, the statement that is true about how ASM failure groups provide redundancy is:
Failure groups contain all ASM disks in a single storage server preventing mirror copies being written to the same storage server.

NEW QUESTION # 80
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