Exam 350-801 topic 1 question 39 discussion

Actual exam question from Cisco's 350-801

Question #: 39
Topic #: 1

Refer to the exhibit. An administrator is attempting to register a SIP phone to a Cisco UCM but the registration is failing. The IP address of the SIP Phone is
10.117.34.222 and the IP address of the Cisco UCM is 10.0.101.10. Pings from the SIP phone to the Cisco UCM are successful. What is the cause of this issue and how should it be resolved?

A. An NTP mismatch is preventing the connection of the TCP session between the SIP phone and the Cisco UCM. The SIP phone and Cisco UCM must be set with identical NTP sources.
B. The certificates on the SIP phone are not trusted by the Cisco UCM. The SIP phone must generate new certificates.
C. DNS lookup for the Cisco UCM FQDN is failing. The SIP phone must be reconfigured with the proper DNS server.
D. A network device is blocking TCP port 5060 from the SIP phone to the Cisco UCM. This device must be reconfigured to allow traffic from the IP phone.

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Suggested Answer: D 🗳️

by n3rds at March 14, 2025, 6:39 a.m.

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v1nhthanh

1 week, 2 days ago

Selected Answer: D

Trying multiple time to 5060

upvoted 1 times

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n3rds

1 month, 2 weeks ago

Selected Answer: D

I could be wrong but the use case on this question is somewhat similar to this community thread https://community.cisco.com/t5/ip-telephony-and-phones/cisco-ip-phone-9971-sip-registration-failed/td-p/1632627

upvoted 1 times

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Exam 350-801 topic 1 question 39 discussion

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v1nhthanh

n3rds

SY0-701