Reverse DNS assigns hostnames to IP addresses.
How is the name of the IP address 198.51.100.165 stored
on a DNS server?
A. In the A record for 165.100.51.198.ipv4.arpA.
B. In the PTR record for 165.100.51.198.in-addr.arpA.
C. In the RNAME record for 198-51-100-165.rev.arpA.
D. In the ARPA record for 165.100.51.198.rev.
E. In the REV record for arpA.in-addr.198.51.100.165.
Answer: B
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