Which DNS record maps an IP address to a hostname?

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Multiple Choice

Which DNS record maps an IP address to a hostname?

Explanation:
Reverse DNS translates an IP address back to a hostname, and the mechanism used is a PTR record. PTR records live in special reverse zones (for IPv4, in-addr.arpa; for IPv6, ip6.arpa) and point an address to its canonical name. For example, an IPv4 address is resolved by looking up a PTR in the corresponding in-addr.arpa zone to reveal the hostname it’s associated with. In contrast, A records map a hostname to an IP address, MX records designate mail servers for a domain, and TXT records store text data. So, to map an IP address to a hostname, you use a PTR record.

Reverse DNS translates an IP address back to a hostname, and the mechanism used is a PTR record. PTR records live in special reverse zones (for IPv4, in-addr.arpa; for IPv6, ip6.arpa) and point an address to its canonical name. For example, an IPv4 address is resolved by looking up a PTR in the corresponding in-addr.arpa zone to reveal the hostname it’s associated with. In contrast, A records map a hostname to an IP address, MX records designate mail servers for a domain, and TXT records store text data. So, to map an IP address to a hostname, you use a PTR record.

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