CompTIA Network+ (N10-008) — Question 414

An engineer needs to verify the external record for SMTP traffic. The engineer logged in to the server and entered the nslookup command. Which of the following commands should the engineer send before entering the DNS name?

Answer options

• A. set type=A
• B. ls -d company.mail.com
• C. set domain=company.mail.com
• D. set querytype=MX

Correct answer: D

Explanation

The correct command is 'set querytype=MX' because it specifies that the engineer wants to query for mail exchange records, which are essential for verifying SMTP traffic. The other options either set the query type to something inappropriate (A), attempt to list DNS records (B), or set a domain without specifying the type of query (C), which does not fulfill the requirement.