To replace only the first match to a regular expression, you must pass as an argument to regex_replace.

Several of your organization's users have requested permission to install certificates from a third party. Before users can install these certificates, company policy states that you must verify that the certificates are still valid. You need to check for revocation. What could you check to verify this information? (Choose all that apply.)

A. CRL B. OCSP C. DNSSEC D. DRM

The desktop version of ________ has an option to turn its popup blocker off and on

Fill in the blank(s) with correct word