Network Security Electronic Engineering (MCQ) Questions and Answers.

Network Security multiple choice que and ans.

 1. A(n) _____ trusted trusted third party that assigns a symmetric key

to two parties.

A. KDC

B. CA

C.KDD

D.none of the above

2. A(n)__ creates a secret key only between a member and the 

center.

A. CA

B. KDC

C.KDD

D.none of the above

3. The secret key between members needs to be created as a ____

key when two members contact KDC.

A. public

B. session

C. complimentary

D.none of the above

4. ____ is a popular session key creator protocol that

requires an authentication server and a ticket-granting server.

A. KDC

B. Kerberos

C.CA

D.none of the above

5. A digital signature needs a(n)_______system.
A. symmetric-key
B. asymmetric-key
C.either (a) or (b)
D.neither (a) nor (b)

6. A witness used in entity authentication is_______
A. something known
B. something possessed
C. something inherent
D.all of the above

7. In ___, a claimant proves her identity to the verifier by using one of the three kinds of witness
A. message authentication
B. entity authentication
C.message confidentiality
D.message integrity

8. Password-based authentication can be divided into two broad categories: _____ and _____
A. fixed; variable
B. time-stamped; fixed
C.fixed; one-time
D.none of the above

9. In ____ authentication,the claimant proves that she knows a secret without actually sending it 
A. password-based
B. challenge-response
C.either (a) or (b)
D.neither (a) nor (b)

10. Challenge-response  authentication can be done using_____
A. symmetric-key ciphers
B. asymmetric-key ciphers
C. keyed-hash functions

D.all of the above

11. A(n) ____is a federal or state organization that binds a

public key to an entity and issues a certificate.

A. KDC

B. Kerberos

C.CA

D.none of the above

12. A(n) __ is a hierarchical system that answers queries about

key certification.

A. KDC

B. PKI

C.CA

D.none of the above

13. The ___ criterion states that it must be extremely difficult or

impossible to create the message if the message digest is given.

A. one-wayness

B. weak-collision-resistance

C. strong-collision-resistance

D.none of the above

14. The ____ criterion ensures that a message cannot easily be 

forged.

A. one-wayness

B. weak-collision-resistance

C. strong-collision-resistance

D.none of the above

15. The ___criterion ensures that we cannot find two

that hash to the same digest

A. one-wayness
B. weak-collision-resistance
C. strong-collision-resistance
D.none of the above