A network engineer is configuring network ports in a public office. To increase security, the engineer wants the ports to allow network connections only after authentication. Which of the following…

The correct answer is B. 802.1X. 802.1X provides port-based Network Access Control (NAC). Ports remain in a blocked state until a device authenticates (usually with RADIUS). This is ideal for public or semi-public areas where ports should not be "always on."

Submitted by tyler.j· Mar 6, 2026Network Security

Question

A network engineer is configuring network ports in a public office. To increase security, the engineer wants the ports to allow network connections only after authentication. Which of the following security features should the engineer use?

Options

APort security
B802.1X
CMAC filtering
DAccess control list

How the community answered

(40 responses)

A
10% (4)
B
83% (33)
C
5% (2)
D
3% (1)

Explanation

802.1X provides port-based Network Access Control (NAC). Ports remain in a blocked state until a device authenticates (usually with RADIUS). This is ideal for public or semi-public areas where ports should not be "always on."

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