Question 530
A campus and branch network operator reports: A mobile operating system requires an appropriate key usage and extended key usage on its BYOD certificate, but the enrollment template omits the client-authentication purpose. Which implementation decision directly satisfies the stated requirement?
Explanation
Correct Answer
Adjust the supported CA certificate template and issuance policy to include required client-authentication usages and compatible key constraints. This is appropriate because eAP clients and servers may validate certificate purpose in addition to chain and expiry; incompatible usages can invalidate an otherwise trusted certificate. It should be verified by this evidence: A newly issued certificate shows the required purpose and the supported client completes EAP-TLS.
Incorrect Answers
Adjust the supported CA certificate template and issuance policy to include required client-authentication usages and compatible key constraints. The offered choice instead concerns a different principle: Correct the certificate identity extraction rules and issuer template to use an approved unique employee or device identifier. Those technical conditions are not interchangeable.
Adjust the supported CA certificate template and issuance policy to include required client-authentication usages and compatible key constraints. The offered choice instead concerns a different principle: Renew or reprovision a valid approved certificate and verify the permitted trust chain and identity mapping before reauthorizing the device. Those technical conditions are not interchangeable.
Adjust the supported CA certificate template and issuance policy to include required client-authentication usages and compatible key constraints. The offered choice instead concerns a different principle: Mark the device appropriately as lost or stolen and apply the supported blocked-device policy and response or certificate revocation requirements. Those technical conditions are not interchangeable.