Implementing and Configuring Cisco Identity Services Engine (SISE) — Question 251

A technician must configure MAB on an access switch. Due to a protocol error, the engineer discovers that MAB cannot authenticate. For MAB to function, which protocol must be enabled in the authorized protocol lists?

Answer options

• A. EAP-TLS
• B. MS-CHAPv2
• C. Process Host Lookup
• D. CHAP

Correct answer: C

Explanation

For MAB (MAC Authentication Bypass) to operate, the Process Host Lookup protocol must be enabled, as it allows the switch to map MAC addresses to IP addresses for authentication. The other options like EAP-TLS, MS-CHAPv2, and CHAP are authentication methods that are not relevant to MAB's operation.