Exam 300-820 topic 1 question 70 discussion

Actual exam question from Cisco's 300-820

Question #: 70
Topic #: 1

Refer to the exhibit showing logs from the Expressway-C, a copy of the Expressway-E certificate, and the UC traversal zone configuration for the Expressway-C.
An office administrator is deploying mobile and remote access and sees an issue with the UC traversal zone. The zone is showing `TLS negotiation failure`. What is causing this issue?

A. The Expressway-E certificate includes the Expressway-C FQDN as a SAN entry
B. The Expressway-C is missing the FQDN of Cisco UCM in the Common Name of its certificate
C. In the UC Traversal Zone on the Expressway-C, the peer address is set to the IP of the Expressway-E, which is not a SAN entry in the Expressway-E certificate
D. The Expressway-E does not have the FQDN of Cisco UCM listed as a SAN in its certificate

Show Suggested Answer

Suggested Answer: D 🗳️

by Madc5 at Sept. 8, 2021, 8:24 a.m.

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Madc5

Highly Voted 2 years, 2 months ago

the correct answer is C

upvoted 14 times

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Collabinski

Most Recent 10 months, 1 week ago

Selected Answer: C

UC Traversal Zone Settings Peer 1 address Enter the FQDN of the Expressway-E. Note that if you use an IP address (not recommended), that address must be present in the Expressway-E server certificate. If you have configured Expressway-E with a dual NIC interface for MRA, enter the FQDN of Expressway-E's internal interface (not the IP address). Expressway-C requires a local DNS record that points to the FQDN of the Expressway-E's internal LAN. https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X14-0-1/mra/exwy_b_mra-deployment-guide-x1401/exwy_m_basic-configuration.html

upvoted 1 times

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AKREM86

1 year, 5 months ago

It should be C. Explanation : "Enter the FQDN of the Expressway-E. Note that if you use an IP address (not recommended), that address must be present in the Expressway-E server certificate." https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X14-0-1/mra/exwy_b_mra-deployment-guide-x1401/exwy_m_basic-configuration.html

upvoted 2 times

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