Which statement is true regarding endpoint registration authentication?
A . When a Subzone is set for "Treat as Authenticated", the endpoint is required to have the correct authentications configured.
B . Expressways and Endpoints do not need to be synchronized with identical NTP timestamps.
C . Authentication credentials can be stored in the local database of the Expressway.
D . SIP endpoints always need authentication credentials.
Answer: C
Explanation:
Configuring authentication to use the local database
The local authentication database is included as part of your VCS system and does not require any specific
connectivity configuration. It is used to store user account authentication credentials. Each set of credentials
consists of a name and password.
https://www.cisco.com/c/dam/en/us/td/docs/telepresence/infrastructure/vcs/config_guide/X8-1/Cisco-VCS-Authenticating-Devices-Deployment-Guide-X8-1.pdf
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