Question 1

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 2

Ahlen is using a set of pre-calculated hashes to attempt to derive the passwords from a Windows SAM file. What is a set of pre-calculated hashes used to derive a hashed password called?

Options :

A : Hash matrix

B : Rainbow table

C : Hash table

D : Password table

Answer: B

Question 3

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

Question 4

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 5

Which one of the following best describes a process that splits the block of plaintext into two separate blocks, then applies the round function to one half, and finally swaps the two halves?

Options :

A : Symmetric cryptography

B : Block ciphers

C : Substitution cipher

D : Feistel cipher

Answer: D

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