CompTIA Security+ (SY0-701) — Question 116

Which of the following is used to validate a certificate when it is presented to a user?

Answer options

• A. OCSP
• B. CSR
• C. CA
• D. CRC

Correct answer: A

Explanation

OCSP (Online Certificate Status Protocol) is the correct answer as it is specifically designed to validate the status of a certificate in real-time. CSR (Certificate Signing Request) is used for generating a certificate, not validating it. CA (Certificate Authority) issues certificates but does not validate them directly when presented. CRC (Cyclic Redundancy Check) is unrelated to certificate validation altogether.