300-320 Question #481: Real Exam Question with Answer & Explanation

The correct answer is A: Authenticates the user itself. 802.1X is an IEEE industry standard (not Cisco proprietary) for port-based Network Access Control. It can authenticate both users (via user credentials passed through EAP methods like PEAP or EAP-TLS) and devices/machines (via machine certificates or machine credentials, known as

Question

What are the True regarding 802.1X. (Choose three)

Options

AAuthenticates the user itself
BAuthenticates the device itself
CIf the device does not support, allow the access automatically
DCisco proprietary
EIndustry standard

Explanation

802.1X is an IEEE industry standard (not Cisco proprietary) for port-based Network Access Control. It can authenticate both users (via user credentials passed through EAP methods like PEAP or EAP-TLS) and devices/machines (via machine certificates or machine credentials, known as machine authentication). This makes A, B, and E correct. Option C is false - if a device does not support 802.1X, access is not automatically granted by default; the port remains unauthorized unless fallback mechanisms like MAC Authentication Bypass (MAB) or a guest VLAN are explicitly configured. Option D is false because 802.1X is an open IEEE standard used across multi-vendor environments.

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