CompTIA Security+ Question D-49

An administrator needs to renew a certificate for a web server. Which of the following should be submitted to a CA?

A. CSR
B. Recovery agent
C. Private key
D. CRL

Answer: A

Explanation:
In public key infrastructure (PKI) systems, a certificate signing request (also CSR or certification request) is a message sent from an applicant to a certificate authority in order to apply for a digital identity certificate. When you renew a certificate you send a CSR to the CA to get the certificate resigned.