Deck 8: Cryptography Terminology and Techniques

Question 1

A hacker guessing suggested password to a program is call as?

A)password guessing
B)dictionary attack
C)default password attack
D)none of these

Answer 1

default password attack

Question 2

Symmetric key encryption is also called as?

A)public key encryption
B)private key encryption
C)both of these
D)none of these

Answer 2

private key encryption

Question 3

Conversion of Cypher text to plain text?

A)encryption
B)decryption
C)simple text
D)none of these

Answer 3

decryption

Question 4

__is used to create the organisation's overall security program.

A)program policy
B)purpose
C)security
D)none of these

Question 5

An act of protecting information from unauthorised disclouser to an entity.-

A)intergrity
B)avability
C)confidentiality
D)none of these

Question 6

A way to ensure that the entity is indeed what it claims to be.-

A)authentication
B)accountability
C)identification
D)security

Question 7

The__model is 7 layer architecture where each layer is having some specific functionality to perform.

A)tcp
B)osi
C)ois
D)none of these

Question 8

The full form of OSI is OSI model__.

A)open systems interconnection
B)open software interconnection
C)open connection
D)open system internet

Question 9

The technique in which when one character is replaced by another Character is called as?

A)transposition
B)substitution
C)combinational
D)none of these

Question 10

Conversion of plain text into Cipher text is called as________.

A)encryption
B)decryption
C)hidden text
D)none of above

Question 11

In Symmetric schemes requires both parties to share how many secret key?

A)one
B)two
C)three
D)four

Question 12

Blum Blum Shub Generator is based on which Algorithm?

A)private key
B)public key
C)both a & b
D)none of these

Question 13

In DES step both LPT and RPT undergoes in how much key Rounds?

A)8
B)16
C)32
D)64

Question 14

What is the 4th step in DES Algorithm?

A)key transformation
B)s-box substitution
C)p-box permutation
D)expansion permutation

Question 15

In AES in which Round Subkeys are Generated from Original key for each round?

A)key expansion
B)initial round
C)finale round
D)none of these

Question 16

AES stands for?

A)authorized encryption standard
B)advance encryption standard
C)advance encryption strategy
D)none of these

Question 17

Which of them is type of Cipher?

A)stream cipher
B)block cipher
C)both of them
D)none of these

Question 18

The message which is not understandable is called as?

A)cipher text
B)plain text
C)hidden text
D)both a & c

Question 19

The__is a polygraphic substitution cipher based on linear algebra.

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

Question 20

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

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

Question 21

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

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

Question 22

In cryptography the original message before being transform is called

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

Question 23

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

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

Question 24

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

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

Question 25

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

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