CompTIA Security+ (SY0-501) — Question 220

A system administrator needs to implement 802.1x whereby when a user logs into the network, the authentication server communicates to the network switch and assigns the user to the proper VLAN.
Which of the following protocols should be used?

Answer options

• A. RADIUS
• B. Kerberos
• C. LDAP
• D. MSCHAP

Correct answer: A

Explanation

RADIUS is the correct choice because it is specifically designed for network access control and can communicate between the authentication server and network devices like switches to assign VLANs. Kerberos, LDAP, and MSCHAP do not provide the necessary functionality for VLAN assignment in this context.