PT0-003: CompTIA PenTest+Demo

By CompTIA · Question Mode

QuestionQ27

Reconnaissance and Enumeration

A penetration tester performs a network scan but has difficulty accurately enumerating vulnerabilities because of the following error:

OS identification failed —

Which of the following is the most likely cause of this error?

  • A The scan did not reach the target because of a firewall block rule.
  • B The scanner database is out of date.
  • C The scan is reporting a false positive.
  • D The scan cannot gather one or more fingerprints from the target.
Explanation

Operating-system identification requires the scanner to collect one or more fingerprints from the target and compare them with known OS characteristics. Identification fails when the required fingerprint data cannot be gathered.

Community Discussion

No comments yet. Be the first to start the discussion!