CompTIA Security+ (SY0-501) — Question 277

An external attacker can modify the ARP cache of an internal computer.
Which of the following types of attacks is described?

Answer options

• A. Replay
• B. Spoofing
• C. DNS poisoning
• D. Client-side attack

Correct answer: B

Explanation

The correct answer is Spoofing because it involves an attacker impersonating another device on the network by sending false ARP messages. Replay attacks involve retransmitting valid data to trick systems, DNS poisoning targets domain name resolution, and client-side attacks exploit vulnerabilities in user applications rather than manipulating network protocols like ARP.