Question 1

What must occur in order for a cipher to be considered ‘broken’?

Options :

A : Decoding the key

B : Rendering the cipher no longer useable

C : Rendering the cipher no longer useable

D : Uncovering the algorithm used

Answer: C

Question 2

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 3

Juanita has been assigned the task of selecting email encryption for the staff of the insurance company she works for. The various employees often use diverse email clients. Which of the following methods is available as an add-in for most email clients?

Options :

A : PGP

B : Caesar cipher

C : DES

D : RSA

Answer: A

Question 4

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 5

Which one of the following terms describes two numbers that have no common factors?

Options :

A : Fermat-s number

B : Convergent

C : Coprime

D : Euler-s totient

Answer: C

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