MCQOPTIONS
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MCQOPTIONS
This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Symmetric Ciphers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A symmetric cipher system has an IC of 0.041. What is the length of the key m ? |
| A. | 1 |
| B. | 3 |
| C. | 2 |
| D. | 5 |
| Answer» E. | |
| 2. |
Consider the cipher text message with relative frequencies: 4 0 10 25 5 32 24 15 6 11 5 5 1 2 6 6 15 19 10 0 6 28 8 2 3 2 |
| A. | nThe Index of Coincidence is |
| B. | 0.065 |
| C. | 0.048 |
| D. | 0.067 |
| E. | 0.042 |
| Answer» D. 0.067 | |
| 3. |
On Encrypting cryptography using Vignere Cipher System using the keyword LUCKY we get cipher text |
| A. | nlazeiibljji |
| B. | nlazeiibljii |
| C. | olaaeiibljki |
| D. | mlaaeiibljki |
| Answer» B. nlazeiibljii | |
| 4. |
On Encrypting thepepsiisintherefrigerator using Vignere Cipher System using the keyword HUMOR we get cipher text- |
| A. | abqdnwewuwjphfvrrtrfznsdokvl |
| B. | abqdvmwuwjphfvvyyrfznydokvl |
| C. | tbqyrvmwuwjphfvvyyrfznydokvl |
| D. | baiuvmwuwjphfoeiyrfznydokvl |
| Answer» C. tbqyrvmwuwjphfvvyyrfznydokvl | |
| 5. |
Use Caesar s Cipher to decipher the followingHQFUBSWHG WHAW |
| A. | ABANDONED LOCK |
| B. | ENCRYPTED TEXT |
| C. | ABANDONED TEXT |
| D. | ENCRYPTED LOCK |
| Answer» C. ABANDONED TEXT | |