Evaluate the security implications of expired or revoked digital certificates. Discuss the methods and protocols used for checking certificate revocation status and how they contribute to the overall security of a system.

Which feature of digital certificates prevents tampering and ensures data integrity?Expiration datesDigital signaturesEncryption algorithmsCertificate chains

How does a Certificate Revocation List (CRL) enhance security in a PKI environment?By encrypting communication between the client and serverBy listing all active digital certificatesBy providing timestamps for certificate issuanceBy listing all certificates that have been revoked

What elements of a certificate are inspected when a certificate is verified? Check all that apply.

D made an offer to B for the purchase of his car. B accepted the offer on 1st May 2023. The acceptance reached D on 4th May 2023. On 3rd May, B revoked his acceptance in electronic form by the form of an email. Now D is not willing to accept the revocation as the same was made in electronic form. Decide whether the revocation is valid?a)  The revocation is invalid in the given case.b)  The revocation is invalid in the given case as the acceptance has not reached D yet.c)  The revocation is valid in the given case.d)  Both (a) and (b)

Which of the following objectives of cryptography defines the trustworthiness of data or resources to prevent improper and unauthorized changes?NonrepudiationAuthenticationIntegrityConfidentiality