In the NAC solution, which of the following authentication modes does not require users to...

MAC address authentication (also known as MAC bypass authentication) is typically used for non-intelligent endpoints such as printers, IP phones, and IoT devices that cannot run client software or access a portal for login.

The authentication process is completed by identifying the device’s MAC address and mapping it to predefined policies in the NAC system.

It does not require client installation or human interaction — making it ideal for “dumb terminals.”

By contrast, 802.1X and portal authentication require software clients or web-based logins and are designed for user-driven authentication.