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312-50V13 · Question #397

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…

The correct answer is C. -sV. To perform service version discovery using Nmap, Shiela must use the -sV option, which probes open ports to determine the service name and version running on them.

Submitted by the_admin· Mar 6, 2026Scanning Networks

Question

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?

Options

  • A-SN
  • B-SX
  • C-sV
  • D-SF

How the community answered

(53 responses)
  • A
    4% (2)
  • C
    94% (50)
  • D
    2% (1)

Why each option

To perform service version discovery using Nmap, Shiela must use the `-sV` option, which probes open ports to determine the service name and version running on them.

A-SN

The `-SN` option (or `-sn`) performs a ping scan, which disables port scanning and only checks if hosts are online, not their services or versions.

B-SX

The `-SX` option does not exist as a standard Nmap command for service version discovery.

C-sVCorrect

The Nmap option `-sV` is specifically used for service version detection, instructing Nmap to probe open ports to determine the exact service name and version number running on the target system. This helps identify potential vulnerabilities associated with specific software versions.

D-SF

The `-SF` option does not exist as a standard Nmap command for service version discovery.

Concept tested: Nmap command-line options (Service version detection)

Source: https://nmap.org/book/man-port-scanning-basics.html

Topics

#Nmap#service version detection#network scanning#port scanning

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