Question: Help me please!!! I'm stuck!!! 1.In which version were the extensions to the X.509 added? 2.Which system is the Public Available directory more secure than

Help me please!!! I'm stuck!!!

1.In which version were the extensions to the X.509 added?

2.Which system is the Public Available directory more secure than given to choose either between Public key authority and public announcements? Explain

3.Determine the representation of X.509 given that A obtains certification from authority X1 and B obtains certification from CA X2. Also, it is assumed that A can use a chain of certificates to obtain B's public key.

4.Give examples of the elements that are in the field of the X.509 certificates.

5.What does CRL stand for?

6.Determine the truth value of the statement that certificates generated by X are the certificates of other CAs and they are also the reverse certificates.

7.Give desirable reasons why it is desirable to revoke a certificate before it expires.

8.Determine the parts of an Extension.

9.Determine the attribute that conveys any desired X.500 directory attribute values for the subject of the certificate.

10.Is it true to say that it is the criticality indicator that indicates whether an extension can be safely ignored?

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