Exam 300-820 topic 1 question 68 discussion

Actual exam question from Cisco's 300-820

Question #: 68
Topic #: 1

Refer to the exhibit. Mobile and remote access is being added to an existing B2B deployment and is failing. When the administrator looks at the alarms on the
Expressway-C, the snippets are shown. Which configuration action should the administrator take to fix this issue?

A. The listening port on the Expressway-C for SIP TCP must be changed to a value other than 5060
B. The listening port on the Expressway-C for SIP TLS must be changed to a value other than 5061
C. The listening port on the Cisco UCM for the Expressway-C SIP trunk must be changed to something other than 5060 or 5061
D. The listening port on the Cisco UCM for the Expressway-C SIP trunk is set to something other than 5060 or 5061. It must be set to 5060 for insecure and 5061 for secure SIP

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Suggested Answer: C 🗳️

by Madc5 at Sept. 8, 2021, 2:22 p.m.

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Collabinski

10 months, 1 week ago

Selected Answer: C

Also, this was mentioned in the doc. † Unified CM can listen on 5061 for TCP SIP but we discourage it.

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Collabinski

10 months, 3 weeks ago

* If you have MRA connections to the Unified CM, which are line-side connections to 5060/5061, then you should avoid using 5060/5061 as the listening port for any SIP trunks you create on that Unified CM. https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/config_guide/X12-5/Cisco-Expressway-IP-Port-Usage-for-Firewall-Traversal-Deployment-Guide-X12-5.pdf

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