DES follows_________.

1.SP Networks

2.Feistel Cipher Structure

3.Caesars Cipher

4.Hash Algorithm

How many round keys are generated in the AES algorithm?

1. 12

2.11

3.10

4.8

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

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

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

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

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

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

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

1. 16

2.9

3.12

4.18

What is the block size in the Simplified AES algorithm?

1.36 bits

2.16 bits

3.40 bits

4. 8 bits

Which mode requires the implementation of only the encryption algorithm?

1.OF

2.B CTR

3.CBC

4.ECB

Which of the following modes of operation does not involve feedback?

1.OF

2.B CTR

3.CBC

4.ECB

. What is the block size in the Simplified AES algorithm?

1. 36 bits

2.16 bits

3.40 bits

4.8 bits

By using ______________ you can diminish the chance of data leakage.

1.Steganography

2.Chorography

3.Tomography

4.Cryptography

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

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

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

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

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

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

How many computation rounds does the simplified AES consists of?

1.10

2.8

3.2

4.5

How many rounds does the AES-192 perform?

1.16

2.12

3.14

4.10

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

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)

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)

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

1.2

2.4

3.5

4.6

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

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

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

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

RSA is also a stream cipher like Merkel-Hellman.

1.True

2.False

3.none

4. all

The 4Ã—4 byte matrices in the AES algorithm are called_____

1. Permutations

2.Transitions

3.Words

4.States

The DES algorithm has a key length of ______.

1. 16 Bits

2.32 Bits

3.64 Bits

4.128 Bits

The Initial Permutation table/matrix is of size _____.

1.4Ã—8

2.8Ã—8

3.12Ã—8

4.16Ã—8

The inverse transformation matrix times the forward transformation matrix equals the identity matrix.

1. True

2.False

3.none

4.all

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

The number of unique substitution boxes in DES after the 48 bit XOR operationare___.

1.4

2.8

3.12

4.16

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

1.True

2.False

3.none

4. all

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

What is the expanded key size of AES-192?

1.60 words

2.32 words

3.52 words

4.44 words

What is the key size in the S-AES algorithm?

1.32 bits

2.24 bits

3. 16 bits

4.None of the mentioned

What is the number of possible 3 x 3 affine cipher transformations?

1.840

2.168

3.1344

4.1024

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

1.Rijndael

2.RC6

3.Blowfish

4.MARS

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

Which mode of operation has the worst â€œerror propagationâ€ among the following?

1. EC

2.B CB

3.CBC

4.OFB

Which of the following is a faulty S-AES step function?

1.Mix Columns

2.Add round key

3.Byte substitution

4.Shift rows

Which of the following is a natural candidates for stream ciphers?

1.OF

2.B ECB

3.CBC

4.CFB

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

1. Rijndael

2.Serpent

3.Blowfish

4.JUPITER

- MCQ Questions from Computer Hardware Concept
- Computer Communication and Networking MCQS Quiz
- Computer Hardware Quiz Set 1
- Computer Hardware Quiz Set 2
- Computer Hardware Quiz Set 3
- Computer Hardware Quiz Set 4
- Computer Hardware Quiz Set 5
- Computer Hardware Quiz Set 6
- Computer Hardware Quiz Set 7
- Computer Hardware Quiz Set 8
- Computer Hardware Multiple Choice Questions(MCQs) and Answers
- Graphics Hardware and Display devices Input Devices
- Computer Hardware MCQ GK Questions Set 1
- Computer Hardware MCQ GK Questions Set 2
- Computer Hardware Multiple Choice Questions
- CDMA Multiple Choice Questions
- Network Security Multiple Choice questions
- Opengl Multiple Choice Questions
- Opengl Multiple Choice Questions.
- Web Development Multiple-choice Questions
- WiFi Multiple Choice Questions
- 4G Multiple Choice Question
- NETWORK MODELS MCQ
- INTERNET AND PROTOCOLS MCQ SET 1
- INTERNET AND PROTOCOLS MCQ SET 2
- INTERNET AND PROTOCOLS MCQ SET 3
- INTERNET AND PROTOCOLS MCQ SET 4
- INTERNET AND PROTOCOLS MCQ SET 5
- NETWORKING /PHYSICAL LAYER SET 1
- NETWORKING /PHYSICAL LAYER SET 2
- NETWORKING /PHYSICAL LAYER SET 3
- NETWORKING /PHYSICAL LAYER SET 4
- Information and Network Security Set 1
- Information and Network Security Set 2
- Information Cyber Security (ICS) MCQs Set 1
- Information Cyber Security (ICS) MCQs Set 2
- Information Cyber Security (ICS) MCQs Set 3
- Information Cyber Security (ICS) MCQs Set 4
- Information Cyber Security (ICS) MCQs Set 5

Online Exam TestTop Tutorials are Core Java,Hibernate ,Spring,Sturts.The content on Online Exam Testwebsite is done by expert team not only with the help of books but along with the strong professional knowledge in all context like coding,designing, marketing,etc!