CompTIA Security+ (SY0-501) — Question 689

A technician needs to document which application versions are listening on open ports. Which of the following is MOST likely to return the information the technician needs?

Answer options

• A. Banner grabbing
• B. Steganography tools
• C. Protocol analyzer
• D. Wireless scanner

Correct answer: A

Explanation

Banner grabbing is a technique used to collect information about the services running on open ports, including application versions. The other options, such as steganography tools, protocol analyzers, and wireless scanners, do not specifically provide version information for applications on open ports.