MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Running Key Cipher Multiple Choice knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What will be the ciphered text corresponding to ALGORITHM if running key cipher is used for encryption with keyword as DATASTRUCTURE ? |
| A. | LDJOZOBBK |
| B. | DLZOJBKBO |
| C. | ZOLDJBKBO |
| D. | OLZBJDKBO |
| Answer» C. ZOLDJBKBO | |
| 2. |
Running key cipher is a variation of? |
| A. | vigenere cipher |
| B. | autokey cipher |
| C. | hill cipher |
| D. | route cipher |
| Answer» B. autokey cipher | |
| 3. |
Running key cipher is a transposition cipher. |
| A. | true |
| B. | false |
| Answer» C. | |
| 4. |
Running key cipher is harder to decipher than keyword cipher. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 5. |
Tabula recta consists of _______________ |
| A. | 26 rows and 26 columns |
| B. | 26 rows and 1 column |
| C. | 1 row and 26 columns |
| D. | 27 rows and 27 columns |
| Answer» B. 26 rows and 1 column | |
| 6. |
Which of the following is a difference between running key cipher and vigenere cipher? |
| A. | they use different tables for encryption |
| B. | vigenere cipher is poly alphabetic whereas running key cipher is mono alphabetic |
| C. | in vigenere cipher the key is repeated whereas in running key cipher key is not repeated |
| D. | vigenere cipher was used in ancient time whereas running key cipher is used in modern world |
| Answer» D. vigenere cipher was used in ancient time whereas running key cipher is used in modern world | |
| 7. |
Which of the following cipher uses a key book or a key text instead of a keyword? |
| A. | vigenere cipher |
| B. | autokey cipher |
| C. | running key cipher |
| D. | affine cipher |
| Answer» D. affine cipher | |
| 8. |
Encryption in running key cipher is done using _______________ |
| A. | running key table |
| B. | vigenere cycle |
| C. | tabula recta |
| D. | any table provided by the person performing the encryption |
| Answer» D. any table provided by the person performing the encryption | |
| 9. |
Running key cipher is an example of _______________ |
| A. | mono-alphabetic cipher |
| B. | poly-alphabetic cipher |
| C. | transposition cipher |
| D. | additive cipher |
| Answer» C. transposition cipher | |
| 10. |
What is the significance of indicator block in running key cipher? |
| A. | it helps in encryption |
| B. | it strengthens the cipher |
| C. | it gives information regarding the book/text from where the key is taken |
| D. | it makes encryption easy |
| Answer» D. it makes encryption easy | |