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INS QUIZ UNIT 1

Total questions: 30

Worksheet time: 30mins

Name
Class
Date
1.

1. Which of the following elements is most likely to be an issue for Ping flood?

a)

a. Confidentiality

b)

b. Integrity

c)

c. Availability

d)

d. Non-repudiation.

2.

DES follows

a)

Hash Algorithm

b)

Caesars Cipher

c)

Feistel Cipher Structure

d)

SP Networks

3.

The DES Algorithm Cipher System consists of (a)   rounds (iterations) each with a round key

4.

Data Encryption Standard (DES) uses a __________.

a)

Stream Cipher

b)

Bit Cipher

c)

Block Cipher

d)

Substitution Cipher

5.

In the DES algorithm the round key is __________ bit and the Round Input is ____________bits.

a)

a) 48, 32

b)

b) 64,32

c)

c) 56, 24

d)

d) 32, 32

6.

In the DES algorithm the Round Input is 32 bits, which is expanded to 48 bits via ____________

a)

P-box

b)

Expansion P-box

c)

S- box

d)

Expansion S-box

7.

The number of unique substitution boxes in DES after the 48 bit XOR operation are

a)

8

b)

4

c)

6

d)

12

8.
If the same key is used to encrypt and decrypt a message, this is known as? 
a)
Symmetric encryption
b)
Encryption doesn't exist!
c)
Asymmetric encryption
d)
Same-key encryption
9.
What type of key is not shared and computers cannot decrypt a message without it?
a)
Free key
b)
Private key
c)
Public key
d)
Personal key
10.
What type of key can be freely shared with anyone so that they can encrypt a message?
a)
Personal key
b)
Private key
c)
Free key
d)
Public key
11.
If you were to use a caeser cipher with a key of 3 shifts to the left, how would you encrypt the word: Cipher?
a)
ZAMEBO
b)
ZOMEBO
c)
ZFMEBO
d)
ZFMEBA
12.

Asymmetric encryption uses only 1 key.

a)

True

b)

False

c)

Maybe

d)

God Knows

13.
hello has been encrypted with Caesar cipher to khoor. The key used was:
a)
abc
b)
3
c)
2
d)
alphabet mapping table
14.

The process of converting plaintext to ciphertext.

a)

cryptography

b)

cyphertext

c)

decryption

d)

encryption

15.

Information that is readable without performing any cryptographic operations.

a)

cryptography

b)

plaintext

c)

encryption

d)

decryption

16.

A string of text that has been converted to a secure form using encryption.

a)

encryption

b)

decryption

c)

ciphertext

d)

plaintext

17.

The process of converting a ciphertext into plaintext.

a)

encryption

b)

decryption

c)

plaintext

d)

cryptography

18.

Which of the following is a type of traditional cipher?

a)

transportation cipher

b)

transposition cipher

c)

transforming cipher

d)

vigenere cipher

19.

Which of the following ciphers are created by shuffling the letters of a word?

a)

substitution cipher

b)

transposition cipher

c)

vigenere cipher

d)

Hill Cipher

20.

AES stands for

a)

Advanced Encryption Standard

b)

Adaptive Encryption Standard

c)

Accumulative Encryption Standard

d)

Advanced Encryption System

21.

An asymmetric key cipher uses ... keys

a)

1

b)

2

c)

3

d)

4

22.

Which of the following ciphers is a block cipher?

a)

ceaser cipher

b)

vignere cipher

c)

playfair cipher

d)

none

23.

TDES stands for

a)

Tri DES

b)

Tree DES

c)

Triple DES

d)

Trouble DES

24.

RSA is a

a)

Symmetric algorithm

b)

Asymmetric Algorithm

c)

Public key Algorithm

d)

Private key algorithm

25.

RSA algorithm used

a)

natural numbers

b)

real numbers

c)

prime numbers

d)

None

26.

The input block in AES is

a)

112 bits

b)

64 bits

c)

128 bits

d)

254 bits

27.

RSA stands for:

a)

Rivest Shamirand Adleman

b)

Rock Shane and Amozen

c)

Rivest Shane and Amozen

d)

Rock Shamir and Adleman

28.

the art & science of cracking the cipher-text without knowing the key

a)

Cracking

b)

Cryptanalysis

c)

Cryptography

d)

Crypto-hacking

29.

Which of the following is not the primary objective of cryptography

a)

Confidentiality

b)

Data Integrity

c)

Data Redundancy

d)

Authentication

30.

Cryptography offers a set of required security services. Which of the following is not among that 4 required security services

a)

Encryption

b)

Message Authentication codes

c)

Hash functions

d)

Steganography

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