Question

Which type of DNS record should you use to resolve an IP address to a domain name?

A. An A record
B. A C Name
C. An SPF record
D. A PTR record

Answer 1

To resolve an IP address to a domain name, use a PTR record, which is designed for such reverse lookups in DNS, as opposed to an A record which resolves a domain name to an IP address.

Step-by-step explanation:

To resolve an IP address to a domain name, the type of DNS record that you should use is D. A PTR record. This type of record, also known as a Pointer record, maps an IP address to a domain name, which is the reverse of what an A record does. An A record maps a domain name to an IP address. The use of a PTR record is commonly associated with reverse DNS lookups, where you are trying to find out the domain name associated with a given IP address.