Online Certificate Status Protocol (OCSP)
Checks for revoked certificates OCSP queries a CA or RA that maintains a list of expired certificates Server sends a response with a status of valid, suspended, or revoked OCSP allows for on-line checking of certificate validity, by sending a request to a web site containnig information on valid certificates. Thus, it tends to use more up-to-date data than the CRL.
The indexed versions don't agree on this one
This question appears on 2 CBT versions we've indexed, and they don't all give the same answer. Exam editions change and answer keys get re-cut, so more than one of these was correct on the test it came from. Here is each of them, and how many versions give it.
Privacy enhanced mail (PEM)
Comptia Exam Objectives Security+
Checks for revoked certificates OCSP queries a CA or RA that maintains a list of expired certificates Server sends a response with a status of valid, suspended, or revoked OCSP allows for on-line checking of certificate validity, by sending a request to a web site containnig information on valid certificates. Thus, it tends to use more up-to-date data than the CRL.
Comptia Security+ Study Guide
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