Question 100
A Cisco ISE operations team investigates this site issue: A wired EAP-TLS client presents a certificate from an untrusted private CA, and an engineer edits the AD password policy instead of the certificate trust path. Which statement best explains why the correct response works?
Explanation
Correct Answer
Certificate-based authentication validates X.509 trust, identity extraction, and permitted EAP methods rather than a password lookup alone. This behavior directly governs the stated requirement. The recommended action is: Install and trust the approved issuing CA chain in ISE and configure an appropriate certificate authentication profile and EAP-TLS policy. The acceptance result is: The approved client certificate passes validation while a certificate from an unknown CA fails.
Incorrect Answers
Alert on ISE node time drift and authoritative NTP reachability. The repeat risk here is different: Audit overlapping account namespaces before modifying identity-source sequences. A directly relevant preventive control is: Certificate-based authentication validates X.509 trust, identity extraction, and permitted EAP methods rather than a password lookup alone.
Track EAP certificate chain, identity mapping, and renewal as distinct controls. The repeat risk here is different: Audit overlapping account namespaces before modifying identity-source sequences. A directly relevant preventive control is: Certificate-based authentication validates X.509 trust, identity extraction, and permitted EAP methods rather than a password lookup alone.
Normalize and validate the NAD's MAC calling-station identifier format against ISE's accepted endpoint identity handling. The repeat risk here is different: Audit overlapping account namespaces before modifying identity-source sequences. A directly relevant preventive control is: Certificate-based authentication validates X.509 trust, identity extraction, and permitted EAP methods rather than a password lookup alone.