Implementing Cisco Collaboration Cloud and Edge Infrastructure (CLCEI) — Question 143

An Expressway pairs deployed for Mobile and Remote Access. An administrator installs a new server certificate on the Expressway-E. After installing the new certificate, the UC Traversal zone between Expressway-C and Expressway-E is active. Still, Jabber Mobile and Remote Access clients cannot log in over the Expressway. The certificate Common Name is the FQDN of Expressway-E, “expe01 example.com”, and the certificate contains no additional names. Which Subject Alternate Name must be added to the certificate to allow Jabber Mobile and Remote Access clients to log in successfully?

Answer options

• A. FQDN of the Expressway-C, “expc01.example.local”
• B. registration domain, “example.com” or “collab-edge.example.com”
• C. Cisco UCM cluster FQDN, “cucmcluster.example.local”
• D. FQDN of the Expressway-E, “expe01.example.com”

Correct answer: B

Explanation

The correct answer is B because adding the registration domain as a Subject Alternate Name allows the Jabber clients to validate the server certificate correctly during the login process. The other options do not address the requirement for the registration domain, which is crucial for the authentication of mobile and remote access clients.