MCQOPTIONS
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MCQOPTIONS
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 | |
| 2. |
How many XOR gate operations are involved in the S-box permutation? |
| A. | 12 |
| B. | 8 |
| C. | 16 |
| D. | 4 |
| Answer» B. 8 | |
| 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 | |
| 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 | |
| 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 | |
| 6. |
THE_7TH_ROW_IN_THE_8_‚ÄÖ√†√∂‚Àւ•_8_MATRIX_UNDERGOES_A_____________SHIFT.?$# |
| A. | 6 bit |
| B. | 6 byte |
| C. | 7 bit |
| D. | 7 byte |
| Answer» C. 7 bit | |
| 7. |
Which round provides linear diffusion in the Whirlpool Algorithm?$ |
| A. | Add Key |
| B. | Substitute Bytes |
| C. | Mix Rows |
| D. | Shift Rows |
| Answer» D. Shift Rows | |
| 8. |
How_many_XOR_gate_operations_are_involved_in_the_S-box_permutation?$ |
| A. | 12 |
| B. | 8 |
| C. | 16 |
| D. | 4 |
| Answer» B. 8 | |
| 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 | |
| 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 | |
| 11. |
The Round Constant is dependent on the s-box values. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
How many round constants (RCs) are required in Whirlpool? |
| A. | 10 |
| B. | 11 |
| C. | 12 |
| D. | 21 |
| Answer» B. 11 | |
| 13. |
Another name for the Whirlpool key is |
| A. | CState |
| B. | LState |
| C. | Estate |
| D. | KState |
| Answer» E. | |
| 14. |
The S-box implements linear mapping thus providing diffusion. |
| A. | True |
| B. | False |
| Answer» C. | |
| 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 | |
| 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. | |