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Q.

An _________ is a network that allows authorized access from outside users

A

intranet

B

internet

C

extranet

D

none of the above

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MCQ

1.

In a(n) ________, the key is called the secret key.

A

symmetric-key

B

asymmetric-key

C

either (a) or (b)

D

neither (a) nor (b)

Discussion

MCQ

2.

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

Discussion

MCQ

3.

A ______ provides privacy for LANs that must communicate through the global Internet.

A

VPP

B

VNP

C

VNN

D

VPN

Discussion

MCQ

4.

Message ________ means that the sender and the receiver expect privacy

A

confidentiality

B

integrity

C

authentication

D

none of the above

Discussion

MCQ

5.

. Challenge-response authentication can be done using ________

A

symmetric-key ciphers

B

asymmetric-key ciphers

C

keyed-hash functions

D

all of the above

Discussion

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