Question 1

In RSA, ?(n) = in terms of p and q.

Accepted Answer

A)  (p) /(q) 
B)  (p) (q) 
C)  (p-1) (q-1) 
D)  (p+1) (q+1)  C

Question 2

An attempt to make a computer resource unavailable to its intended users is called ____________________________

Accepted Answer

A)  denial-of-service attack
B)  virus attack
C)  worms attack
D)  botnet process A

Question 3

The is a polygraphic substitution cipher based on linear algebra.

Accepted Answer

A)  hill cipher
B)  playfair cipher
C)  affine cipher
D)  none of these A

Question 4

RSA is also a stream cipher like Merkel-Hellman.

Accepted Answer

A) True 
 B)False

Question 5

In cryptography the original message before being transform is called

Accepted Answer

A)  simple text
B)  plain text
C)  empty text
D)  filled text

Question 6

______________is the practice of concealing a message within another message,image or file.

Accepted Answer

A)  steganography
B)  cryptography
C)  cipher
D)  receiver

Question 7

SSL primarily focuses on ____________________________    Pretty good privacy (PGP) is used in

Accepted Answer

A)  integrity and authenticity
B)  integrity and non- repudiation
C)  authenticity and privacy
D)  confidentiality and integrity

Question 8

ECC stands for

Accepted Answer

A)  elliptic curve cryptography
B)  elliptic cryptography curve
C)  error correcting code
D)  none of the above

Question 9

Diffie-Hellman algorithm is widely known as__________________________________________

Accepted Answer

A)  key exchange algorithm
B)  key agreement algorithm
C)  only a
D)  both a and b

Question 10

In Asymmetric-Key Cryptography, the two keys, e and d, have a special relationship to

Accepted Answer

A)  other
B)  data
C)  keys
D)  each other

Question 11

In asymmetric key cryptography, the private key is kept by ______________

Accepted Answer

A)  sender
B)  receiver
C)  sender and receiver
D)  none of these

Question 12

RSA algorithm is best example of____________________________

Accepted Answer

A)  asymmetric key cryptography
B)  symmetric key cryptography
C)  elliptic curve cryptography
D)  all of the above

Question 13

USENET falls under which category of public key sharing?

Accepted Answer

A)  public announcement
B)  publicly available directory
C)  public key authority
D)  public key certificate

Question 14

IPSec is designed to provide security at the __________________________________________

Accepted Answer

A)  transport layer
B)  network layer
C)  application layer
D)  session layer

Question 15

The man-in-the-middle attack can endanger the security of the Diffie-Hellman method if two parties are not

Accepted Answer

A)  authenticated
B)  joined
C)  submit
D)  separate

Question 16

Public key cryptography also called as__________________________________________

Accepted Answer

A)  asymmetric key cryptography
B)  symmetric key cryptography
C)  both a and b
D)  none of the above

Question 17

An asymmetric-key (or public-key) cipher uses

Accepted Answer

A)  1 key
B)  2 key
C)  3 key
D)  4 key

Question 18

Hash function is used for__________________________________________

Accepted Answer

A)  message authentication
B)  digital signature
C)  both a and b
D)  only a

Question 19

In Asymmetric-Key Cryptography, although RSA can be used to encrypt and decrypt actual messages, it is very slow if the message is

Accepted Answer

A)  short
B)  flat
C)  long
D)  thin

Question 20

In RSA, we select a value 'e' such that it lies between 0 and ?(n) and it is relatively prime to ?(n).

Accepted Answer