MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Polybius Square Multiple Choice knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What will be the encrypted text corresponding to plain text SAN using standard polybius square cipher? |
| A. | 431133 |
| B. | 341133 |
| C. | 441133 |
| D. | 114433 |
| Answer» B. 341133 | |
| 2. |
What will be the plain text corresponding to ciphered text 134325 if standard polybius square cipher is used for encryption? |
| A. | SRH |
| B. | CSK |
| C. | RCB |
| D. | KKR |
| Answer» C. RCB | |
| 3. |
Which of the following cipher uses polybius square cipher in its first step of encrypting data? |
| A. | Autokey cipher |
| B. | One time pad cipher |
| C. | ADFGVX cipher |
| D. | Rail fence cipher |
| Answer» D. Rail fence cipher | |
| 4. |
Polybius square cipher is less susceptible to frequency analysis. |
| A. | true |
| B. | false |
| Answer» C. | |
| 5. |
Auto key cipher is more secure than polybius square cipher? |
| A. | true |
| B. | false |
| Answer» B. false | |
| 6. |
Which two English letters are usually combined in polybius table? |
| A. | A and B |
| B. | Y and Z |
| C. | I and J |
| D. | J and K |
| Answer» D. J and K | |
| 7. |
Polybius square cipher is most closely related to? |
| A. | mono-alphabetic cipher |
| B. | poly-alphabetic cipher |
| C. | transposition cipher |
| D. | additive cipher |
| Answer» B. poly-alphabetic cipher | |
| 8. |
What is the usual size of polybius square used for encrypting English alphabets? |
| A. | 5 X 5 |
| B. | 6 X 6 |
| C. | 26 X 26 |
| D. | 25 X 25 |
| Answer» B. 6 X 6 | |
| 9. |
Which of the following is made possible by the use of Polybius square? |
| A. | To represent the plain text by smaller set of symbols |
| B. | To represent the plain text by larger set of symbols |
| C. | To represent the plain text by the letters of some other language |
| D. | To represent the plain text by the same set of symbols |
| Answer» B. To represent the plain text by larger set of symbols | |
| 10. |
How many keys are required for encryption and decryption of data when we use asymmetric cipher? |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» D. 3 | |
| 11. |
Polybius square is also known by the name of? |
| A. | Polybius checkboard |
| B. | Polybius table |
| C. | Ploybius board |
| D. | Ploybius keypad |
| Answer» B. Polybius table | |