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Exam 220-1102 topic 1 question 485 discussion

Actual exam question from CompTIA's 220-1102
Question #: 485
Topic #: 1
[All 220-1102 Questions]

A technician is troubleshooting a PC that is unable to perform DNS lookups. Utilizing the following firewall output:



Which of the following ports should be opened to allow for DNS recursion?

  • A. 1
  • B. 53
  • C. 80
  • D. 123
  • E. 445
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Suggested Answer: B 🗳️
by Duke_CT at May 13, 2024, 3:58 a.m.

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Duke_CT
Highly Voted 12 months ago
To allow for DNS recursion, the technician should open port 53. This port is commonly used for DNS traffic, both for regular DNS queries and for DNS recursion, which involves a DNS server querying other DNS servers on behalf of a client to resolve a domain name. Therefore, the correct answer is: B. 53
upvoted 5 times
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2ba1468
Most Recent 5 months, 2 weeks ago
Selected Answer: B
I agree with Duke, answer is B
upvoted 1 times
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