Which of the following unix commands is primarily used to resolve a fully-qualified domain name (fqdn) to an ip address and can operate in an interactive mode (that is, you enter this command, receive a prompt, and can then give additional commands)

nslookup

Explanation:

nslookup means name server lookup. It takes domain names and displays detailed DNS information such as IP address, name server etc.

When no argument is given with the command, the user is asked interactively to enter the domain name.

An example of nslookup command is :

nslookup

> twitter.com

Server:  127.0.0.53

Address:   127.0.0.53#53

Non-authoritative

Name:twitter.com

Address: 104.244.42.65

Name:twitter.com

Address: 104.244.42.129

the anwser is ethier d or e