MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Digital Communications knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
THE_SELF_INFORMATION_OF_RANDOM_VARIABLE_IS?$ |
| A. | 0 |
| B. | 1 |
| C. | Infinite |
| D. | Cannot be determined |
| Answer» D. Cannot be determined | |
| 2. |
Which is more efficient method?$ |
| A. | Encoding each symbol of a block |
| B. | Encoding block of symbols |
| C. | Encoding each symbol of a block & Encoding block of symbols |
| D. | None of the mentioned |
| Answer» C. Encoding each symbol of a block & Encoding block of symbols | |
| 3. |
Entropy_of_a_random_variable_is$ |
| A. | 0 |
| B. | 1 |
| C. | Infinite |
| D. | Cannot be determined |
| Answer» D. Cannot be determined | |
| 4. |
Coded system are inherently capable of better transmission efficiency than the uncoded system. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
Lempel-Ziv_algorithm_is |
| A. | Variable to fixed length algorithm |
| B. | Fixed to variable length algorithm |
| C. | Fixed to fixed length algorithm |
| D. | Variable to variable length algorithm |
| Answer» B. Fixed to variable length algorithm | |
| 6. |
When X and Y are statistically independent, then I (x,y) i? |
| A. | 1 |
| B. | 0 |
| C. | Ln 2 |
| D. | Cannot be determined |
| Answer» C. Ln 2 | |
| 7. |
When the base of the logarithm is 2, then the unit of measure of information is |
| A. | Bits |
| B. | Bytes |
| C. | Nats |
| D. | None of the mentioned |
| Answer» B. Bytes | |
| 8. |
The method of converting a word to stream of bits is called as |
| A. | Binary coding |
| B. | Source coding |
| C. | Bit coding |
| D. | Cipher coding |
| Answer» C. Bit coding | |
| 9. |
The event with minimum probability has least number of bits. |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
Binary Huffman coding is a |
| A. | Prefix condition code |
| B. | Suffix condition code |
| C. | Prefix & Suffix condition code |
| D. | None of the mentioned |
| Answer» B. Suffix condition code | |
| 11. |
When probability of error during transmission is 0.5, it indicates that |
| A. | Channel is very noisy |
| B. | No information is received |
| C. | Channel is very noisy & No information is received |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 12. |
The unit of average mutual information is |
| A. | Bits |
| B. | Bytes |
| C. | Bits per symbol |
| D. | Bytes per symbol |
| Answer» B. Bytes | |
| 13. |
Self information should be |
| A. | Positive |
| B. | Negative |
| C. | Positive & Negative |
| D. | None of the mentioned |
| Answer» B. Negative | |