MCQOPTIONS
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MCQOPTIONS
This section includes 4 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. |
The counter value in CTR modes repeats are a regular interval. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Which of the following modes does not implement chaining or dependency on previous stage computations ? |
| A. | CTR, ECB |
| B. | CTR, CFB |
| C. | CFB, OFB |
| D. | ECB, OFB |
| Answer» B. CTR, CFB | |
| 3. |
In OFB Transmission errors do not propagate: only the current ciphertext is affected, since keys are generated locally . |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
There is a dependency on the previous s bits in every stage in CFB mode. Here s can range from ___ |
| A. | 8-16 bits |
| B. | 8-32 bits |
| C. | 4-16 bits |
| D. | 8-48 bits |
| Answer» C. 4-16 bits | |