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SY0-501 · Question #484

SY0-501 Question #484: Real Exam Question with Answer & Explanation

The correct answer is A: Banner grabbing. Banner grabbing is a reconnaissance technique used by attackers to collect software version and service information from network hosts by reading the banners returned by services upon connection.

Submitted by haruto_sh· Mar 4, 2026

Question

A remote intruder wants to take inventory of a network so exploits can be researched. The intruder is looking for information about software versions on the network. Which of the following techniques is the intruder using?

Options

  • ABanner grabbing
  • BPort scanning
  • CPacket sniffing
  • DVirus scanning

Explanation

Banner grabbing is a reconnaissance technique used by attackers to collect software version and service information from network hosts by reading the banners returned by services upon connection.

Common mistakes.

  • B. Port scanning identifies which ports are open on a host to determine what services are running, but does not inherently reveal software version information from service banners.
  • C. Packet sniffing captures network traffic in transit to analyze data, credentials, or communications, and is not specifically targeted at collecting software version information from services.
  • D. Virus scanning is a defensive technique used to detect malware on a system and is not a reconnaissance method used by attackers to gather network inventory information.

Concept tested. Banner grabbing for software version reconnaissance

Reference. https://attack.mitre.org/techniques/T1592/

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