CompTIA Network+ (N10-007) — Question 473

Which of the following DNS record types can help limit spam?

Answer options

• A. SPF
• B. SRV
• C. A
• D. MX

Correct answer: A

Explanation

The SPF (Sender Policy Framework) record is specifically designed to help prevent spam by specifying which mail servers are permitted to send email on behalf of a domain. The other record types, such as SRV, A, and MX, do not provide mechanisms for spam prevention and focus on different functionalities related to service location, address mapping, and mail exchange, respectively.