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Exam 300-820 topic 1 question 167 discussion

Actual exam question from Cisco's 300-820
Question #: 167
Topic #: 1
[All 300-820 Questions]



Refer to the exhibit. An engineer must configure a B2B traversal zone. Trusted certification authority and server certificates are uploaded to Cisco Expressway-C and Expressway-E servers. After the traversal zone configuration is completed in Expressway-C, the error message in the exhibit appears. What are the two reasons for the error? (Choose two.)

  • A. The peer 1 address in Expressway-C must be replaced by the FQDN of Expressway-C.
  • B. The peer 1 address in Expressway-C is not the FADN of Expressway-E.
  • C. The communication port is not set to 7001.
  • D. The FQDN of Expressway-E cannot be resolved by the DNS server.
  • E. The traversal zone TLS verify subject name in Expressway-E does not match the FQDN of Expressway-C.
Show Suggested Answer Hide Answer
Suggested Answer: AB 🗳️
by Cayne_Collins at July 19, 2024, 8:17 p.m.

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iamnoone
1 month, 3 weeks ago
Selected Answer: BE
Will go with B and E. https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X14-0/basic_config/exwy_b_cisco-expressway-e-and-expressway-c-basic-configuration-deployment-guide-x14-0/exwy_m_routing-configuration.html#concept_5CACB904BBC11E766FDB34D20BE12C9A
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TheBabu
9 months, 2 weeks ago
Selected Answer: BE
A is wrong because the FQDN of Expressway-E should be used in the peer address field. B is correct, assuming "FADN" is just a typo. C is not an issue, you don't necessarily need to start by using 7001. As long as E is listening on 7002, this works (tested in the lab). D does not apply here because they're not using the FQDN currently. E makes sense, they're not showing the config on the E side, but if you put the wrong "TLS verify subject name" there you will get a TLS connection failure. Going for B and E here.
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Cayne_Collins
9 months, 3 weeks ago
I am leaning more towards B and C on this one. Literally answers A and B are contradictory to each other. Unless this setup has multiple traversal zones, and this isnt the first one, they should be using port 7001.
upvoted 1 times
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C (25%)
B (20%)
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