CompTIA Exam Questions

Which of the following is being used by the certificate…

A user tries to visit a website with a revoked certificate. In the background a server from the certificate authority
only sends the browser revocation information about the domain the user is visiting.
Which of the following is being used by the certificate authority in this exchange?

A.
CSR

B.
Key escrow

C.
OCSP

D.
CRL