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Free A00-251 Exam Braindumps (page: 3)

Page 2 of 16
PDF with 61 Questions

When managing an existing SAS Viya deployment, which situations describe when you need to obtain a new software order? (Choose two.)

  1. Adding on a new product
  2. Applying a hot fix
  3. Updating TLS certificates
  4. Upgrading to a newer version

Answer(s): A,D

Explanation:

When you add on a new product or upgrade to a newer version of SAS Viya, you will need to obtain a new software order. This is because these changes involve additional or updated software components that are not covered under your existing license agreement.
Note: If you are only applying a hotfix or updating TLS certificates, you do not need to obtain a new software order. These changes do not involve additional or updated software components and can be done under your existing license agreement.



An administrator needs to restart only the SAS Logon service.
Which is a valid method for doing that?

  1. Using the sas-admin CLI command with the saslogon service-id
  2. Using the CAS Server Monitor
  3. Using the operating system's service management utility
  4. Using the SAS Environment Manager Dashboard

Answer(s): A

Explanation:

According to the official SAS Viya 3.5 documentation, the CLI command to restart the SAS Logon service is sas-admin service restart saslogon. You can find this information in the SAS Viya 3.5 Administering Guide page 22.



Which statement about the CAS backup controller is FALSE?

  1. A CAS backup controller can be deployed to the same machine as a CAS worker
  2. CAS supports adding only one backup controller
  3. CAS supports adding a backup controller after the initial deployment
  4. A CAS backup controller can only be used in a distributed CAS server architecture.

Answer(s): B

Explanation:

CAS can support multiple backup controllers in a distributed architecture, which can improve performance and provide redundancy. Additionally, a backup controller can be added after the initial deployment, which can be useful for managing a large number of CAS workers. It is false statement because CAS supports adding more than one backup controller in a CAS server architecture. The CAS Backup Controller is a separate process that runs alongside the CAS Controller and monitors the health of the CAS processes. It can be deployed on a separate machine or on the same machine as a CAS worker. The backup controller can be added during the initial deployment or after the initial deployment.
A CAS Backup controller is used in a distributed CAS server architecture but it can also be used in a single machine architecture too. CAS Backup controller provides an additional level of redundancy, in case the primary CAS controller goes down, it can take over its responsibilities.



You have an MPP SAS Viva environment with a primary CAS Controller and a backup CAS Controller. The primary controller fails and your backup controller is now active.

Which task will you need to complete during the process of recovering the primary controller?

  1. Delete the permstore from the backup controller.
  2. Stop SAS services on all the CAS workers.
  3. Restore the permstore from the backup controller to the primary controller.
  4. Restore CASDISKCACHE from the backup controller to the primary controller.

Answer(s): C

Explanation:

When recovering a primary controller, you need to restore the permstore from the backup controller to the primary controller. The permstore contains the state of the CAS session and other important information related to the CAS environment, such as configuration, metadata, and user data. Restoring the permstore from the backup controller allows the primary controller to resume operation with minimal data loss.
The process of restoring the permstore from the backup controller to the primary controller can be done by using the sas-admin permstore-restore command.


Reference:

https://www.sas.com/en_us/support/documentation/viya-books/cas-admin/cas-admin- backup-and-recovery.html#zid-12719
It is important to note that, before restoring the permstore, you should stop SAS services on all the CAS workers, in order to avoid data corruption during the restore process. Also, it is not recommended to delete the permstore from the backup controller, as it is useful in case of primary controller failure. CASDISKCACHE is used for caching purpose, it's not related to permstore or primary controller failure.






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