CompTIA Network+ (N10-007) — Question 563

Which of the following DNS record types assists with the routing of email?

Answer options

• A. MX
• B. PTR
• C. SRV
• D. AAAA

Correct answer: A

Explanation

The MX (Mail Exchange) record is specifically designed to route email to the appropriate mail server, making it essential for email delivery. The PTR (Pointer) record is used for reverse DNS lookups, the SRV (Service) record specifies services available on the network, and the AAAA record maps a domain to an IPv6 address, none of which are used for email routing.