Reverse Lookup in DNS means a lookup to __________________ using…
2024
Reverse Lookup in DNS means a lookup to __________________ using __________________ records.
Answer: B. map IP address to domain name, PTR — Reverse Lookup in DNS is a process used to find the domain name associated with a given IP address. This is achieved using PTR (Pointer) records, which map IP…
- A.
map domain names to IP address, A
- B.
map IP address to domain name, PTR
- C.
determine the authoritative name servers, CNAME
- D.
identify mail servers, SOA
- E.
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Correct answer: B
Reverse Lookup in DNS is a process used to find the domain name associated with a given IP address. This is achieved using PTR (Pointer) records, which map IP addresses to domain names. Unlike forward lookup (which maps domain names to IP addresses), reverse lookup is essential for network troubleshooting, email validation, and security checks.