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In a Public Key Infrastructure system, the Certificate Authorities (CA) are responsible for (select all that apply)

Verification (control the certificate revocation list or CRL and or the Online Certificate Status Protocol or OCSP, certificate is still good)

Escrow (maintain backup private key for user)

Revocation (terminating certificates, certificate is not good)

Enrollment (identify person and create the X.509 certificate)

Explanation

PKI Architecture

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