An auditor is given access to a conference room to conduct an analysis. When they connect their laptop’s
Ethernet cable into the wall jack, they are not able to get a connection to the Internet but have a link
light. Which of the following is MOST likely causing this issue?

A.
Ethernet cable is damaged

B.
The host firewall is set to disallow outbound connections

C.
Network Access Control

D.
The switch port is administratively shutdown

Explanation:
Network Access Control (NAC) means controlling access to an environment through strict adherence to
and implementation of security policies. The goals of NAC are to prevent/reduce zero-day attacks,
enforce security policy throughout the network, and use identities to perform access control.
Incorrect Answers:
A, B, D: In all three cases, a link light would not be showing.

Stewart, James Michael, CompTIA Security+ Review Guide, Sybex, Indianapolis, 2014, p. 40