CompTIA Security+ (SY0-501) — Question 311

While performing a penetration test, the technicians want their efforts to go unnoticed for as long as possible while they gather useful data about the network they are assessing.
Which of the following would be the BEST choice for the technicians?

Answer options

• A. Vulnerability scanner
• B. Offline password cracker
• C. Packet sniffer
• D. Banner grabbing

Correct answer: C

Explanation

The correct answer is C, as a packet sniffer allows technicians to capture and analyze network traffic without alerting system administrators. In contrast, a vulnerability scanner (A) actively probes for weaknesses which may be detected, an offline password cracker (B) is used after gaining access to data, and banner grabbing (D) involves sending requests that can easily be logged and detected.