What is an advantage of using Layer 2 MAC authentication?

What is an advantage of using Layer 2 MAC authentication?
A . it matches user names to MAC address
B . No setup is required on the client
C . MAC allow lists are easily maintained over time
D . MAC identifiers are hard to spoof

View Answer

Answer: B

Explanation:

Layer 2 MAC authentication is a method of authenticating devices based on their MAC addresses without requiring any client-side configuration or credentials. The switch sends the MAC address of the device to an authentication server such as ClearPass or RADIUS, which checks if the MAC address is authorized to access the network. If yes, the switch grants access to the device based on the assigned role and policies. If no, the switch denies access or redirects the device to a captive portal for further authentication.

References: https://www.arubanetworks.com/techdocs/ArubaOS_86_Web_Help/Content/arubaos-solutions/1-ov