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Exam SY0-501 topic 1 question 237 discussion

Actual exam question from CompTIA's SY0-501
Question #: 237
Topic #: 1
[All SY0-501 Questions]

A company wants to host a publicly available server that performs the following functions:
✑ Evaluates MX record lookup
✑ Can perform authenticated requests for A and AAA records
✑ Uses RRSIG
Which of the following should the company use to fulfill the above requirements?

  • A. DNSSEC
  • B. SFTP
  • C. nslookup
  • D. dig
  • E. LDAPS
Show Suggested Answer Hide Answer
Suggested Answer: A 🗳️
DNS Security Extensions (DNSSEC) provides, among other things, cryptographic authenticity of responses using Resource Record Signatures (RRSIG) and authenticated denial of existence using Next-Secure (NSEC) and Hashed-NSEC records (NSEC3).
by andev08 at March 31, 2019, 6:56 p.m.

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andev08
Highly Voted 6 years ago
it should be DNSSEC.
upvoted 10 times
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slackbot
Most Recent 2 months, 4 weeks ago
Selected Answer: D
it seems like they just need a service performing DNS lookups like Dig. i dont see the correlation between DNSSEC and MX records lookup
upvoted 1 times
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CTK246
3 years, 11 months ago
A or AAA = DNS
upvoted 2 times
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vaxakaw829
4 years, 9 months ago
https://www.cloudflare.com/dns/dnssec/how-dnssec-works/
upvoted 1 times
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Bidar12
5 years, 1 month ago
The Domain Name System Security Extensions (DNSSEC) is a suite of Internet Engineering Task Force (IETF) specifications for securing certain kinds of information provided by the Domain Name System (DNS) as used on Internet Protocol (IP) networks.
upvoted 4 times
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B (20%)
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