Under the Platform Administration GUI, if an NTP server isn’t specified, what will the Cisco Unified

CallManager cluster use for a time source?

A.
The clock source for the cluster will be the first Cisco router that is configured to support NTP.

B.
The internal clock in the first node will become the clock source for the cluster.

C.
The individual servers in the cluster will each use their own internal clock source.

D.
The clock source for the cluster will revert to the first application that supports NTP.

Explanation:
Cisco Unified Communications System 8.x SRND
pg.3-33 Unified CM automatically synchronizes the NTP time of all subscribers in the cluster to the
publisher. During installation, each subscriber is automatically configured to point to an NTP
server running on the publisher. The publisher considers itself to be a master server and provides
time for the cluster based on its internal hardware clock unless it is configured to synchronize from
an external server.