MCQOPTIONS
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MCQOPTIONS
This section includes 7 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. |
RC4 algorithm uses the concept of Block Cipher System. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Till when was the RC4 algorithm kept a secret? |
| A. | 1990 |
| B. | 1992 |
| C. | 1996 |
| D. | 1994 |
| Answer» E. | |
| 3. |
Which one of the following RC4 algorithm not used in? |
| A. | SSL |
| B. | TLS |
| C. | FTP |
| D. | WEP |
| Answer» D. WEP | |
| 4. |
Which of these is not a characteristic of block ciphers? |
| A. | Variable key length / block size / number of rounds |
| B. | Mixed operators, data/key dependent rotation |
| C. | Key independent S-boxes |
| D. | More complex key scheduling |
| Answer» D. More complex key scheduling | |
| 5. |
Which RC5 mode will have the ciphertext longer than the plaintext by at most the size of a single RC5 block? |
| A. | RC5 block cipher |
| B. | RC5-Cipher Block Chaining |
| C. | RC5-Cipher Block Chaining Pad |
| D. | RC5-CipherText Stealing |
| Answer» D. RC5-CipherText Stealing | |
| 6. |
RC5 uses the Feistel Structure. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
RC5 encryption uses Right shift and decryption uses Left shift. |
| A. | True |
| B. | False |
| Answer» C. | |