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Question 858 - N10-008 discussion

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A user is unable to perform a reverse DNS lookup of an IP address to a hostname. Which of the following DNS record types is missing?

A.
PTR
Answers
A.
PTR
B.
CNAME
Answers
B.
CNAME
C.
SOA
Answers
C.
SOA
D.
AAAA
Answers
D.
AAAA
Suggested answer: A

Explanation:

When a user is unable to perform a reverse DNS lookup of an IP address to a hostname, the missing DNS record type is thePTR (Pointer)record. Here's what you need to know:

PTR (Pointer) Record:

The PTR record maps an IP address to a hostname (reverse DNS lookup).

It is used to resolve IP addresses back to domain names.

For example, if you have an IP address (e.g., 192.168.1.10), the PTR record would provide the corresponding hostname (e.g., server.example.com).

asked 02/10/2024
Robinson Santos
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