Internet Security solved MCQs
1 of 4
1. Message_____ means that the data must arrive at the receiver exactly as sent.
2. Message _______ means that the receiver is ensured that the message is coming from the intended sender, not an imposter.
3. A(n) ________function creates a message digest out of a message.
4. The secret key between members needs to be created as a ______ key when two members contact KDC.
5. The ________ criterion ensures that a message cannot easily be forged.
6. A(n) _____ is a trusted third party that assigns a symmetric key to two parties.
7. A witness used in entity authentication is ____________.
8. A _______ message digest is used as an MDC.
9. A(n)______ creates a secret key only between a member and the center.
10. ________ means to prove the identity of the entity that tries to access the system's resources.
11. A ________ signature is included in the document; a _______ signature is a separate entity.
12. If _________ is needed, a cryptosystem must be applied over the scheme.
13. Digital signature provides ________.
14. Digital signature cannot provide ________ for the message.
15. To authenticate the data origin, one needs a(n) _______.
16. A(n) _________ can be used to preserve the integrity of a document or a message.
17. Challenge-response authentication can be done using ________.
18. The _______criterion ensures that we cannot find two messages that hash to the same digest.
19. A digital signature needs a(n)_________ system.
20. A(n) ________is a federal or state organization that binds a public key to an entity and issues a certificate.
21. Message ________ means that the sender and the receiver expect privacy.
22. In ________ authentication, the claimant proves that she knows a secret without actually sending it.
23. In _______, a claimant proves her identity to the verifier by using one of the three kinds of witnesses.
24. The _______ criterion states that it must be extremely difficult or impossible to create the message if the message digest is given.
25. A(n) ______ is a hierarchical system that answers queries about key certification.
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