Certified Information Systems Security Professional (CISSP) — Question 273

What is the benefit of using Network Admission Control (NAC)?

Answer options

• A. NAC only supports Windows operating systems (OS).
• B. NAC supports validation of the endpoint's security posture prior to allowing the session to go into an authorized state.
• C. NAC can require the use of certificates, passwords, or a combination of both before allowing network admission.
• D. Operating system (OS) versions can be validated prior to allowing network access.

Correct answer: B

Explanation

The correct answer, B, highlights that NAC assesses the security posture of an endpoint before it is allowed to establish a session, ensuring that only compliant devices can connect. Option A is incorrect because NAC supports multiple operating systems, not just Windows. Option C, while true, is not the main benefit highlighted in the question. Option D is also a capability of NAC but does not encompass the primary advantage of validating security posture.