Which of the following descriptions about MAC authentication are correct? (Multiple choice)

Question

Options

• AMAC authentication simplifies user operations
• BMAC authentication is suitable for scenarios where users are dispersed and users are highly
• CAccount management for MAC authentication is relatively simple
• DMAC authentication does not require client installation

• A
  72% (23)
• B
  28% (9)

Explanation

MAC authentication works by automatically identifying devices using their hardware (MAC) address, meaning users never need to enter credentials or interact with a login process - making option A correct. Since the "account" is simply a MAC address entry in a list, account management is inherently simple (add or remove addresses), supporting C. Because the authentication happens transparently at the network infrastructure level, no supplicant or client software is needed on the endpoint device, confirming D.

Option B is the distractor - MAC authentication is actually suited for fixed, concentrated devices (printers, IP phones, IoT sensors) precisely because MAC addresses are tied to static hardware; it is a poor fit for dispersed or highly mobile users, where 802.1X or portal-based authentication is preferred instead.

Memory tip: Think of MAC auth as the "VIP list at the door" - the bouncer (switch) checks your ID number (MAC address) automatically, no password needed, no app required, and the guest list is easy to update - but it only works well when the same people (devices) show up regularly in the same place.

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