Here’s the Answer to the Question posted on Facebook
Q. Homer wants to use digital signatures for his emails and realizes he needs a certificate. Which of the following will issue Homer a certificate?
D. Recovery agent
Answer available until May 20, 2016.
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Answer. B is correct. A Certificate Authority (CA) issues and manages certificates.
A certificate revocation list (CRL) is a list of revoked certificates.
Online Certificate Status Protocol (OCSP) is an alternative to a CRL and validates certificates with short responses such as good, unknown, or revoked.
A recovery agent can retrieve a private key if the original private key is no longer accessible.
Objective: 6.3 Given a scenario, use appropriate PKI, certificate management and associated components.
See Chapter 10 of the CompTIA Security+: Get Certified Get Ahead: SY0-401 Study Guide.