CompTIA Network+ (N10-009) — Question 80

A network administrator wants users to be able to authenticate to the corporate network using a port-based authentication framework when accessing both wired and wireless devices. Which of the following is the best security feature to accomplish this task?

Answer options

• A. 802.1X
• B. Access control list
• C. Port security
• D. MAC filtering

Correct answer: A

Explanation

The correct answer is A, 802.1X, as it is specifically designed for port-based network access control, allowing for secure authentication for both wired and wireless clients. Options B, C, and D do not provide the same level of authentication capability; Access control lists are used for traffic filtering, Port security is focused on limiting MAC addresses on a switch port, and MAC filtering is less secure as it can be easily spoofed.