A company uses a 'Public Key Infrastructure' (PKI). What is the role of the 'Certificate Authority' (CA)?

Answer options:

To encrypt the data.

To issue and verify digital certificates, binding a public key to an identity.

To store private keys.

To route network traffic.

How to approach this question

CA = Passport Office. They verify who you are and give you a document (Certificate) proving it.

Full Answer

B.To issue and verify digital certificates, binding a public key to an identity.✓ Correct

A Certificate Authority (CA) is a trusted entity that issues digital certificates. These certificates verify that a specific public key belongs to a specific entity (person, organization, server), enabling trust in PKI.

Common mistakes

Thinking the CA stores private keys (Escrow does that, not CA).

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