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Exam 300-820 topic 1 question 61 discussion

Actual exam question from Cisco's 300-820
Question #: 61
Topic #: 1
[All 300-820 Questions]

Which DNS record and port combination must be resolved externally for Mobile and Remote Access to be used?

  • A. _collab-edge on port 8443
  • B. _cisco-uds-edge on port 5061
  • C. _collab-edge on port 5061
  • D. _cisco-uds on port 8443
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Suggested Answer: A 🗳️
by leigh1141 at Feb. 25, 2021, 11:03 p.m.

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Collabinski
10 months ago
Selected Answer: A
Public DNS (External Domains) The public, external DNS must be configured with _collab-edge._tls.<domain> SRV records so that endpoints can discover the Expressway-Es to use for Mobile and Remote Access. You also need SIP service records for general deployment (not specifically for MRA). Domain Service Protocol Priority Weight Port Target host example.com collab-edge tls 10 10 8443 expe1.example.com example.com collab-edge tls 10 10 8443 expe2.example.com example.com sips tcp 10 10 5061 expe1.example.com example.com sips tcp 10 10 5061 expe2.example.com https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X14-0/mra/exwy_b_mra-deployment-guide-14/exwy_m_requirements-for-mra.html
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leigh1141
2 years, 9 months ago
A - 8443 is required from the public IP address of the expressway for collab-edge SRV records
upvoted 3 times
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