Certified Ethical Hacker (CEH v11) — Question 377

Shiela is an information security analyst working at HiTech Security Solutions. She is performing service version discovery using Nmap to obtain information about the running services and their versions on a target system.
Which of the following Nmap options must she use to perform service version discovery on the target host?

Answer options

• A. -sN
• B. -sV
• C. -sX
• D. -sF

Correct answer: B

Explanation

The correct option is -sV, as it enables Nmap to detect and report the version of services running on a target system. The other options, -sN, -sX, and -sF, are used for different types of scanning (null scan, Xmas scan, and FIN scan, respectively) and do not provide service version information.