Question 1

Which of the following techniques is used (other than brute force) to attempt to derive a key?

Options :

A : Cryptoanalysis

B : Hacking

C : Cryptography

D : Password cracking

Answer: A

Question 2

Which of the following is a protocol for exchanging keys?

Options :

A : DH

B :

AES

C : RSA

D : EC

Answer: A

Question 3

Which one of the following uses three different keys, all of the same size?

Options :

A : DES

B : 3DES

C : AES

D : RSA

Answer: B

Question 4

The reverse process from encoding - converting the encoded message back into its plaintext format.

Options :

A : Decoding

B : Whitening

C : Encoding

D : Substitution

Answer: A

Question 5

In IPSec, if the VPN is a gateway-gateway or a host-gateway, then which one of the following is true?

Options :

A : Encapsulating Security Payload (ESP) authentication must be used

B : Only transport mode can be used

C : Only the tunnel mode can be used

D : IPSec does not involve gateways

Answer: C