Which function of the Cisco IM and Presence high availability solution is true?

Which function of the Cisco IM and Presence high availability solution is true?
A . When the server has been restored to a normal state, user sessions remain on the backup server.
B . When an event takes place, the end user sessions are not moved from the failed server to the backup.
C . When the server has been restored, the server automatically fails back.
D . When a high availability event takes place, the end user sessions are moved from the failed server to the backup.

View Answer

Answer: D

Explanation:

Reference: https://www.cisco.com/c/en/us/support/docs/unified-communications/unified-communications­manager-im-presence-service/200958-IM-and-Presence-Server-High-Availability.html