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600    Chapter 10 • Public Key Infrastructure

             11. Which statement is true about a CRL?

                 A. A CRL may contain all revoked certificates, or only those revoked since the
                    last CRL.
                 B. A CRL is published as soon as a revocation is called for.
                 C. A CRL only applies to one certificate.
                 D. A CRL lists certificates that can never be trusted again.


             12. In the trust diagram shown here, which statement is true?


             Figure 10.13 A Trust Diagram







                                    Alice                           Bob












                                    Dave                         Carol



                 A. Bob trusts Alice
                 B. Alice does not trust Dave or Carol.
                 C. Bob trusts Carol.

                 D. Dave trusts only Carol.

             13. When exchanging encrypted information with a trusted partner by e-mail,
                 what information do you need to exchange first?
                 A. Your certificates.
                 B. Your private keys.

                 C. The expected size of the data to be sent.
                 D. Web site addresses.


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