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350-701 · Question #613
350-701 Question #613: Real Exam Question with Answer & Explanation
The correct answer is C. The MAB uses the MAC address as username and password.. When MAC Authentication Bypass (MAB) is configured in an 802.1X environment, the device's MAC address is used as both the username and password for authentication.
Submitted by diego_uy· Mar 30, 2026Secure Network Access, Visibility, and Enforcement
Question
When MAB is configured for use within the 802.1X environment, an administrator must create a policy that allows the devices onto the network. Which information is used for the username and password?
Options
- AThe MAB uses the IP address as username and password.
- BThe MAB uses the Call-Station-ID as username and password.
- CThe MAB uses the MAC address as username and password.
- DEach device must be set manually by the administrator.
Explanation
When MAC Authentication Bypass (MAB) is configured in an 802.1X environment, the device's MAC address is used as both the username and password for authentication.
Common mistakes.
- A. MAB does not use the IP address for authentication; IP addresses can change and are not a unique, static identifier for initial network access like a MAC address.
- B. Call-Station-ID is a RADIUS attribute that provides information about the network access device (e.g., port ID), but it is not used as the username or password for the authenticated client.
- D. While an administrator configures MAB, the device's credentials (MAC address) are automatically derived by the network access device, not manually set as a unique username/password for each device by the administrator in the way a human user account would be.
Concept tested. MAC Authentication Bypass (MAB) credentials
Topics
#MAB#802.1X#Network Access Control#Authentication
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