Explore topic-wise MCQs in Cryptography and Network Security.

This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Cryptography and Network Security knowledge and support exam preparation. Choose a topic below to get started.

1.

Which round provides linear diffusion in the Whirlpool Algorithm?

A. Add Key
B. Substitute Bytes
C. Mix Rows
D. Shift Rows
Answer» D. Shift Rows
Discussion
2.

How many XOR gate operations are involved in the S-box permutation?

A. 12
B. 8
C. 16
D. 4
Answer» B. 8
Discussion
3.

The 7th row in the 8 × 8 matrix undergoes a ___________ shift.

A. 6 bit
B. 6 byte
C. 7 bit
D. 7 byte
Answer» C. 7 bit
Discussion
4.

When the Round Constant is given by S[8(r-1)+j]. What are the limits of ‘i’ and ‘j’?

A. i = 1 ; 0 <= j <= 7
B. i = 0 ; 0 <= j <= 7
C. 0 <= i <= 7; 0 <= j <= 7
D. 0 <= i <= 7; j=0
Answer» C. 0 <= i <= 7; 0 <= j <= 7
Discussion
5.

The Round Constant is given by S[8(r-1)+j]. What are the limits of ‘r’?

A. 0 <= r <= 11
B. 0 <= r <= 12
C. 0 <= r <= 10
D. 0 <= r <=16
Answer» D. 0 <= r <=16
Discussion
6.

THE_7TH_ROW_IN_THE_8_‚ÄÖ√†√∂‚Àւ•_8_MATRIX_UNDERGOES_A_____________SHIFT.?$#

A. 6 bit
B. 6 byte
C. 7 bit
D. 7 byte
Answer» C. 7 bit
Discussion
7.

Which round provides linear diffusion in the Whirlpool Algorithm?$

A. Add Key
B. Substitute Bytes
C. Mix Rows
D. Shift Rows
Answer» D. Shift Rows
Discussion
8.

How_many_XOR_gate_operations_are_involved_in_the_S-box_permutation?$

A. 12
B. 8
C. 16
D. 4
Answer» B. 8
Discussion
9.

When the Round Constant is given by S[8(r-1)+j]. What are the limits of ‘i’ and ‘j’?#

A. i = 1 ; 0 <= j <= 7
B. i = 0 ; 0 <= j <= 7
C. 0 <= i <= 7; 0 <= j <= 7
D. 0 <= i <= 7; j=0
Answer» C. 0 <= i <= 7; 0 <= j <= 7
Discussion
10.

The Round Constant is given by S[8(r-1)+j]. What are the limits of ‘r’?$

A. 0 <= r <= 11
B. 0 <= r <= 12
C. 0 <= r <= 10
D. 0 <= r <=16
Answer» D. 0 <= r <=16
Discussion
11.

The Round Constant is dependent on the s-box values.

A. True
B. False
Answer» B. False
Discussion
12.

How many round constants (RCs) are required in Whirlpool?

A. 10
B. 11
C. 12
D. 21
Answer» B. 11
Discussion
13.

Another name for the Whirlpool key is

A. CState
B. LState
C. Estate
D. KState
Answer» E.
Discussion
14.

The S-box implements linear mapping thus providing diffusion.

A. True
B. False
Answer» C.
Discussion
15.

What is the size of the s-box table/matrix in Whirlpool?

A. 8 √ó 8
B. 16 √ó 16
C. 8 √ó 16
D. 16 √ó 8
Answer» C. 8 ‚Äö√†√∂‚àö‚â• 16
Discussion
16.

What is the correct order of operation within each round of the Whirlpool algorithm?

A. Add round key, Substitute bytes, Mix rows, Shift columns
B. Substitute bytes, Add round key, Shift columns, Mix rows
C. Mix rows, Substitute bytes, Shift columns, Add round key
D. Substitute bytes, Shift columns, Mix rows, Add round key
Answer» E.
Discussion