Question

What is contained within an X.509 CRL?

A) serial numbers
B) digital certificates
C) private keys
D) public keys

Answer 1

An X.509 certificate revocation list (CRL) contains a list of revoked serial numbers.

Step-by-step explanation:

An X.509 certificate revocation list (CRL) is used to identify certificates that have been revoked by the issuer before their expiration date. It contains a list of revoked serial numbers, not the certificates themselves. Therefore, the correct answer is A) serial numbers.