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Exam 300-820 topic 1 question 59 discussion

Actual exam question from Cisco's 300-820
Question #: 59
Topic #: 1
[All 300-820 Questions]

For a Mobile and Remote Access deployment, which server's certificate must include the Unified registration domain as a Subject Alternate Name?

  • A. Expressway-C server certificate
  • B. Cisco Unified Communications Manager server certificate
  • C. Expressway-E server certificate
  • D. Expressway-C and Expressway-E server certificate
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Suggested Answer: C 🗳️

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khader09
Highly Voted 3 years, 1 month ago
The Expressway-E server certificate needs to include the following elements in its list of subject alternative names (SAN): Unified CM registrations domains XMPP federation domains IM and Presence chat node aliases (federated group chat)
upvoted 9 times
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Collabinski
Most Recent 10 months ago
Selected Answer: C
Expressway-E server certificate requirements The Expressway-E server certificate must include the elements listed below in its list of subject alternative names (SAN). If the Expressway-E is also known by other FQDNs, all of the aliases must be included in the server certificate SAN. • Unified CM registrations domains: all of the domains which are configured on the Expressway-C for Unified CM registrations. Required for secure communications between endpoint devices and Expressway-E. The Unified CM registration domains used in the Expressway configuration and Expressway-E certificate, are used by Mobile and Remote Access clients to lookup the _collab-edge DNS SRV record during service discovery. They enable MRA registrations on Unified CM, and are primarily for service discovery. https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X14-0-2/cert_creation_use/exwy_b_certificate-creation-and-use-deployment-guide-x1402/exwy_b_certificate-creation-use-deployment-guide_chapter_011.html
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