CompTIA A+ Core 1 (220-1001) — Question 360

An organization keeps receiving spam that appears to come from its own domain. No accounts have been compromised.
Which of the following will BEST mitigate this issue?

Answer options

• A. DNS
• B. S/MIME
• C. SPF
• D. SSID

Correct answer: C

Explanation

The best way to address this issue is by implementing SPF (Sender Policy Framework), which helps to prevent email spoofing by allowing the organization to specify which mail servers are permitted to send email on behalf of its domain. DNS and S/MIME do not directly address the problem of spoofing, while SSID is unrelated as it pertains to wireless networks.