# Computer Hardware and Networking/Information and Network Security Set 2 Sample Test,Sample questions

## Question: ` DES follows_________.`

1.SP Networks

2.Feistel Cipher Structure

3.Caesars Cipher

4.Hash Algorithm

Posted Date:-2022-07-18 06:01:16

## Question: ` How many round keys are generated in the AES algorithm?`

1. 12

2.11

3.10

4.8

Posted Date:-2022-07-18 05:58:00

## Question: ` In AES the 4Ã—4 bytes matrix key is transformed into a keys of size __________.`

1. 60 words

2.32 words

3.52 words

4. 44 words

Posted Date:-2022-07-17 12:39:00

## Question: ` In an RSA system the public key of a given user is e = 31, n = 3599. What is the privatekey of this user?`

1.1023

2.2432

3.2412

4.3031

Posted Date:-2022-07-18 06:10:37

## Question: ` In the DES algorithm the Round Input is 32 bits, which is expanded to 48 bits via____________.`

1.Addition of ones

2. Addition of zeros

3.Duplication of the existing bits

4.Scaling of the existing bits

Posted Date:-2022-07-18 06:05:04

## Question: ` In the DES algorithm the round key is __________ bit and the Round Input is ____________bits.`

1.48, 32

2.32, 32

3.56, 24

4.64,32

Posted Date:-2022-07-18 06:03:56

## Question: ` Perform encryption on the following PT using RSA and find the CT. p = 11; q = 13;M = 7.`

1. 78

2.45

3.124

4.25

Posted Date:-2022-07-18 06:19:15

## Question: ` Perform encryption on the following PT using RSA and find the CT. p = 3; q = 11; M= 5.`

1.18

2.12

3.26

4.28

Posted Date:-2022-07-18 06:17:15

## Question: ` The DES Algorithm Cipher System consists of ____________rounds (iterations) each with a round key.`

1. 16

2.9

3.12

4.18

Posted Date:-2022-07-18 06:02:01

## Question: ` What is the block size in the Simplified AES algorithm?`

1.36 bits

2.16 bits

3.40 bits

4. 8 bits

Posted Date:-2022-07-17 12:47:06

## Question: ` Which mode requires the implementation of only the encryption algorithm?`

1.OF

2.B CTR

3.CBC

4.ECB

Posted Date:-2022-07-17 12:26:47

## Question: ` Which of the following modes of operation does not involve feedback?`

1.OF

2.B CTR

3.CBC

4.ECB

Posted Date:-2022-07-17 12:27:38

## Question: `. What is the block size in the Simplified AES algorithm?`

1. 36 bits

2.16 bits

3.40 bits

4.8 bits

Posted Date:-2022-07-17 12:51:26

## Question: `By using ______________ you can diminish the chance of data leakage.`

1.Steganography

2.Chorography

3.Tomography

4.Cryptography

Posted Date:-2022-07-17 12:23:47

## Question: `Compute private key (d, p, q) given public key (e=23, n=233 Â´ 241=56,153).`

1. 32432

2.19367

3.12543

4.35212

Posted Date:-2022-07-18 06:11:27

## Question: `For p = 11 and q = 17 and choose e=7. Apply RSA algorithm where Ciphermessage=11 and thus find the plain text.`

1.122

2.143

3.111

4.88

Posted Date:-2022-07-18 06:09:53

## Question: `For p = 11 and q = 17 and choose e=7. Apply RSA algorithm where PT message=88and thus find the CT.`

1.64

2.11

3.64

4.23

Posted Date:-2022-07-18 06:09:16

## Question: `For p = 11 and q = 19 and choose d=17. Apply RSA algorithm where Cipher message=80 and thus find the plain text.`

1.5

2.12

3.43

4.54

Posted Date:-2022-07-18 06:16:38

## Question: `For p = 11 and q = 19 and choose e=17. Apply RSA algorithm where message=5 andfind the cipher text.`

1.C=23

2. C=56

3.C=92

4. C=80

Posted Date:-2022-07-18 06:15:51

## Question: `For the AES-128 algorithm there are __________ similar rounds and _________ roundis different.`

1.9 ; the last

2. 8 ; the first and last

3.10 ; no

4.2 pair of 5 similar rounds ; every alternate

Posted Date:-2022-07-17 12:41:02

## Question: `How many computation rounds does the simplified AES consists of?`

1.10

2.8

3.2

4.5

Posted Date:-2022-07-17 12:45:17

## Question: `How many rounds does the AES-192 perform?`

1.16

2.12

3.14

4.10

Posted Date:-2022-07-17 12:32:16

## Question: `How many step function do Round 1 and 2 each have in S-AES?`

1.1 and 4

2.3 and 4

3.Both 4

4.4 and 3

Posted Date:-2022-07-17 13:01:08

## Question: `In RSA, Ð¤(n) = _______ in terms of p and q.`

1.(p+1)(q+1)

2.(p-1)(q-1)

3. (p)(q)

4.(p)/(q)

Posted Date:-2022-07-18 06:14:31

## Question: `In the RSA algorithm, we select 2 random large values â€˜pâ€™ and â€˜qâ€™. Which of the following is the property of â€˜pâ€™ and â€˜qâ€™?`

1.p/q should give no remainder

2.p and q should be prime

3.p and q should be co-prime

4.p and q should be divisible by Ð¤(n)

Posted Date:-2022-07-18 06:13:33

## Question: `n = 35; e = 5; C = 10. What is the plaintext (use RSA)?`

1.2

2.4

3.5

4.6

Posted Date:-2022-07-18 06:20:24

## Question: `On comparing AES with DES, which of the following functions from DES does not have an equivalent AES function?`

1.Permutation P

2.Swapping of halves

3.XOR of subkey with function f

4.F function

Posted Date:-2022-07-17 12:46:12

## Question: `People will normally think it as a normal/regular file and your secret message will pass on without any _____________`

1. Cracking

2.Decryption

3.Suspicion

4.Encryption

Posted Date:-2022-07-17 12:22:56

## Question: `Perform encryption on the following PT using RSA and find the CT. p = 5; q = 11; M= 9.`

1.43

2.14

3.112

4. 54

Posted Date:-2022-07-18 06:17:54

## Question: `Perform encryption on the following PT using RSA and find the CT. p = 7; q = 11; M= 8.`

1.58

2.34

3.123

4.57

Posted Date:-2022-07-18 06:18:30

## Question: `RSA is also a stream cipher like Merkel-Hellman.`

1.True

2.False

3.none

4. all

Posted Date:-2022-07-18 06:12:22

## Question: `The 4Ã—4 byte matrices in the AES algorithm are called_____`

1. Permutations

2.Transitions

3.Words

4.States

Posted Date:-2022-07-17 12:38:12

## Question: `The DES algorithm has a key length of ______.`

1. 16 Bits

2.32 Bits

3.64 Bits

4.128 Bits

Posted Date:-2022-07-18 06:02:55

## Question: `The Initial Permutation table/matrix is of size _____.`

1.4Ã—8

2.8Ã—8

3.12Ã—8

4.16Ã—8

Posted Date:-2022-07-18 06:06:01

## Question: `The inverse transformation matrix times the forward transformation matrix equals the identity matrix.`

1. True

2.False

3.none

4.all

Posted Date:-2022-07-18 05:57:09

## Question: `The main motive for using steganography is that hackers or other users can hide a secret message behind a ______________.`

1.Program file

2.Special file

3. Ordinary file

4. Encrypted file

Posted Date:-2022-07-17 12:21:50

## Question: `The number of unique substitution boxes in DES after the 48 bit XOR operationare___.`

1.4

2.8

3.12

4.16

Posted Date:-2022-07-18 06:06:43

## Question: `The S-Box is used to provide confusion, as it is dependent on the unknown key.`

1.True

2.False

3.none

4. all

Posted Date:-2022-07-18 06:08:25

## Question: `There is an addition of round key before the start of the AES round algorithms.`

1.True

2.False

3.none

4.All of the mentioned

Posted Date:-2022-07-17 12:42:07

## Question: `What is the expanded key size of AES-192?`

1.60 words

2.32 words

3.52 words

4.44 words

Posted Date:-2022-07-17 12:32:58

## Question: `What is the key size in the S-AES algorithm?`

1.32 bits

2.24 bits

3. 16 bits

4.None of the mentioned

Posted Date:-2022-07-17 12:52:54

## Question: `What is the number of possible 3 x 3 affine cipher transformations?`

1.840

2.168

3.1344

4.1024

Posted Date:-2022-07-18 06:07:39

## Question: `Which algorithm among- MARS, Blowfish, RC6, Rijndael and Serpent -was chosen asthe AES algorithm?`

1.Rijndael

2.RC6

3.Blowfish

4.MARS

Posted Date:-2022-07-17 12:31:23

## Question: `Which block mode limits the maximum throughput of the algorithm to the reciprocal of the time for one execution?`

1.EC

2.B CB

3.CTR

4.OFB

Posted Date:-2022-07-17 12:25:50

## Question: `Which mode of operation has the worst â€œerror propagationâ€ among the following?`

1. EC

2.B CB

3.CBC

4.OFB

Posted Date:-2022-07-17 12:24:56

## Question: `Which of the following is a faulty S-AES step function?`

1.Mix Columns

2.Add round key

3.Byte substitution

4.Shift rows

Posted Date:-2022-07-17 12:53:43

## Question: `Which of the following is a natural candidates for stream ciphers?`

1.OF

2.B ECB

3.CBC

4.CFB

Posted Date:-2022-07-17 12:28:58

## Question: `Which one of the following is not a cryptographic algorithm- JUPITER, Blowfish, RC6, Rijndael and Serpent?`

1. Rijndael

2.Serpent

3.Blowfish

4.JUPITER

Posted Date:-2022-07-17 12:30:41

## More MCQS

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