Oracle Exam 1Z0-902 Topic 11 Question 43 Discussion

Actual exam question for Oracle's 1Z0-902 exam

Question #: 43
Topic #: 11

[All 1Z0-902 Questions]

Which statement is true about the disks that are used in ASM diskgroups on the Exadata platform?

AIn an Exadata storage server, each disk is placed into a separate failure group.

BThe grid disks in ASM diskgroups must have similar performance characteristics in addition lo having the same size.

CSparse diskgroups are virtual objects allocated from the DATA diskgroup.

DIf High redundancy is selected, grid disks from the primary and secondary Exadata Database Machine must be specified.

EExtreme Flash (EF) and High Capacity (HC) disks can be mixed to any capacity within the same diskgroup.

Show Suggested Answer

Suggested Answer: C

According to Oracle's documentation1, the Cell Control Command-Line Interface (CellCLI) utility is the command-line administration tool for Oracle Exadata System Software. It can be used to perform various tasks on Exadata Storage Servers, such as creating and managing objects, monitoring performance, and configuring alerts.

To run CELLCLI commands on multiple cells simultaneously, you can use the Distributed Command-Line Interface (dcli) utility2. The dcli utility allows you to execute commands or scripts on a group of cells or hosts in parallel.You can use the dcli utility to copy files from one cell or host to multiple cells or hosts using the -f option3.You can also use the dcli utility to execute commands or scripts on multiple cells or hosts using the -l option to specify a user name and the -g option to specify a file containing a list of cells or hosts3.

Therefore, to achieve your requirement of running a script with several CELLCLI commands on each cell in your Exadata full rack simultaneously, you must:

Copy and execute the script on all storage servers using the dcli command.

by Arlie at Jun 24, 2024, 03:17 PM

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Raul

5 days ago

Wow, these options are tricky. I'm going to go with option C - sparse diskgroups are virtual objects allocated from the DATA diskgroup.

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Fidelia

7 days ago

Hold up, option D is the way to go. If you select High redundancy, you need to specify grid disks from both the primary and secondary Exadata machines.

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Merlyn

8 days ago

I think option E is correct. Exadata allows you to mix EF and HC disks in the same diskgroup, as long as they're all the same capacity.

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Charlesetta

11 days ago

I'm pretty sure it's option B. The disks in an ASM diskgroup must have similar performance characteristics, not just the same size.

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Sage

14 days ago

Hmm, that makes sense too. I guess we need to review the material more carefully before the exam.

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Renay

17 days ago

I disagree, I believe the correct answer is D) If High redundancy is selected, grid disks from the primary and secondary Exadata Database Machine must be specified.

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Sage

27 days ago

I think the answer is B) The grid disks in ASM diskgroups must have similar performance characteristics in addition to having the same size.

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