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Exam 210-250 topic 1 question 998 discussion

Actual exam question from Cisco's 210-250
Question #: 998
Topic #: 1
[All 210-250 Questions]

What is a DNS tunnel?

  • A. A type of VPN tunnel that uses DNS.
  • B. A type of MPLS deployment that uses DNS.
  • C. DNS was not created for tunneling, but a few tools have used it to encapsulate data in the payload of DNS packets.
  • D. An encryption tunneling protocol that uses DNS’s UDP port 53.
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Suggested Answer: B 🗳️

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Nickolos
4 years, 8 months ago
There seems to be some confusion with this. Essentially, what klooq and Mike said is correct, the same is stated in the official SECFND 210-250, the answer is B, but it cites C: "B. DNS was not created for tunneling, but a few tools have used it to encapsulate data in the payload of DNS packets. Threat actors have been using many different untraditional techniques to steal data from corporate networks without being detected. For example, they have been sending stolen credit card data, intellectual property, and confidential documents over DNS using tunneling."
upvoted 1 times
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Mikefbr
5 years, 2 months ago
Totally wrong! C is the correct!
upvoted 1 times
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klooq
5 years, 7 months ago
C is the correct answer
upvoted 3 times
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