Which statement about Cisco Unified Communications Manager and Cisco IM and Presence backups is true?

A.

Sure, I'd be happy to provide you with a detailed explanation of the correct answer to this question.

The correct answer is A: Backups should be scheduled during off-peak hours to avoid system performance issues.

Cisco Unified Communications Manager and Cisco IM and Presence backups are critical to ensure the continuity of service in case of a system failure or data loss. Backups can be scheduled to run automatically at regular intervals, or they can be performed manually on an as-needed basis.

When scheduling backups, it is important to consider the impact that the backup process can have on system performance. During the backup process, the system resources such as CPU, memory, and disk I/O are heavily utilized. If backups are performed during peak hours, it can cause system performance issues and negatively impact the user experience.

Therefore, it is recommended to schedule backups during off-peak hours, such as at night or on weekends, when the system usage is lower. This can help to minimize the impact on system performance and ensure that backups are completed successfully.

As for the other answer options:

• Option B is incorrect. Backups are saved as .tar files, but they are not encrypted using the web administrator account. Cisco Unified Communications Manager and Cisco IM and Presence offer the option to encrypt backups, but this must be configured separately.
• Option C is incorrect. Backups are saved as .tar files, but they can be encrypted if the encryption option is enabled.
• Option D is incorrect. Backups are important for all servers, including subscriber servers. Subscriber servers can store important user data, such as call history, voicemail messages, and presence information. Backups can help to protect this data in case of a failure or loss.