350-401 · Question #1272
Which access control feature does MAB provide?
The correct answer is C. network access based on the physical address of a device. MAC Authentication Bypass (MAB) provides network access control by authenticating devices based on their unique MAC address, typically against a central authentication server.
Question
Which access control feature does MAB provide?
Options
- Asimultaneous user and device authentication
- Ballows devices to bypass authentication
- Cnetwork access based on the physical address of a device
- Duser access based on IP address
How the community answered
(24 responses)- A4% (1)
- C92% (22)
- D4% (1)
Why each option
MAC Authentication Bypass (MAB) provides network access control by authenticating devices based on their unique MAC address, typically against a central authentication server.
MAB authenticates devices, not users, and does not provide simultaneous user and device authentication; that is typically handled by 802.1X with separate authentication processes.
MAB does not allow devices to bypass authentication entirely; instead, it uses the MAC address as the authentication credential.
MAC Authentication Bypass (MAB) is an access control feature that authenticates devices by using their MAC address as the credential. When a device connects, its MAC address is sent to an authentication server (like RADIUS), which then determines if the device is permitted network access based on pre-configured policies tied to that MAC address.
MAB operates at Layer 2 using MAC addresses, not Layer 3 using IP addresses, for device authentication.
Concept tested: MAC Authentication Bypass (MAB)
Source: https://www.cisco.com/c/en/us/td/docs/wireless/controller/8-5/config-guide/b_cg85/mab.html
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