MCQOPTIONS
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MCQOPTIONS
This section includes 22 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. |
In a standard matrix set code-word there are _______ cosset. |
| A. | 2k |
| B. | 2n+k |
| C. | 2n-k |
| D. | 2n |
| Answer» D. 2n | |
| 2. |
The k-bit message forms ____ distinct messages which is referred to as k-tuples. |
| A. | 2k |
| B. | K2 |
| C. | 2k |
| D. | 21/k |
| Answer» D. 21/k | |
| 3. |
Linear codes are used for |
| A. | Forward error correction |
| B. | Backward error correction |
| C. | Forward error detection |
| D. | Backward error detection |
| Answer» B. Backward error correction | |
| 4. |
The rate of a block code is the ration of |
| A. | Block length to message length |
| B. | Message length to block length |
| C. | Message weight to block length |
| D. | None of the mentioned |
| Answer» C. Message weight to block length | |
| 5. |
Block length is the _____________ in the code word. |
| A. | Number of elements |
| B. | Distance between elements |
| C. | Number of parity bits |
| D. | None of the mentioned |
| Answer» B. Distance between elements | |
| 6. |
THE_RATE_OF_A_BLOCK_CODE_IS_THE_RATION_OF?$ |
| A. | Block length to message length |
| B. | Message length to block length |
| C. | Message weight to block length |
| D. | None of the mentioned |
| Answer» C. Message weight to block length | |
| 7. |
The k-bit message forms ____ distinct messages which is referred to as k-tuples.$ |
| A. | 2k |
| B. | K2 |
| C. | 2k |
| D. | 21/k |
| Answer» D. 21/k | |
| 8. |
Linear_codes_are_used_for$ |
| A. | Forward error correction |
| B. | Backward error correction |
| C. | Forward error detection |
| D. | Backward error detection |
| Answer» B. Backward error correction | |
| 9. |
Some examples of linear codes |
| A. | Hamming code |
| B. | Reed-Solomon code |
| C. | Parity code |
| D. | All of the mentioned |
| Answer» E. | |
| 10. |
The _____ of the code-word is the number of non zero elements. |
| A. | Size |
| B. | Weight |
| C. | Distance |
| D. | Subspace |
| Answer» C. Distance | |
| 11. |
Syndrome is calculated by |
| A. | HT/r |
| B. | rHT |
| C. | rH |
| D. | None of the mentioned |
| Answer» C. rH | |
| 12. |
In a standard matrix set code-word there are _______ cosset. |
| A. | 2k |
| B. | 2n+k |
| C. | 2n-k |
| D. | 2n |
| Answer» D. 2n | |
| 13. |
To avoid corruption during transmission, the code-word should be |
| A. | Near |
| B. | Far apart |
| C. | Far |
| D. | None of the mentioned |
| Answer» C. Far | |
| 14. |
The sum of any two vectors in subset S is also in S. This is called as |
| A. | Addition property |
| B. | Subset property |
| C. | Closure property |
| D. | Similarity property |
| Answer» D. Similarity property | |
| 15. |
Block length is the _____________ in the code word? |
| A. | Number of elements |
| B. | Distance between elements |
| C. | Number of parity bits |
| D. | None of the mentioned |
| Answer» B. Distance between elements | |
| 16. |
Extended go-lay code is formed by |
| A. | Adding overall parity bit to perfect go-lay code |
| B. | Ex-oaring overall parity bit with perfect go-lay code |
| C. | Ex-oaring each bit of go-lay code |
| D. | Dividing the overall parity bit with perfect go-lay code |
| Answer» B. Ex-oaring overall parity bit with perfect go-lay code | |
| 17. |
Block codes are generated using |
| A. | Generator polynomial |
| B. | Generator matrix |
| C. | Generator polynomial & matrix |
| D. | None of the mentioned |
| Answer» C. Generator polynomial & matrix | |
| 18. |
The received code contains an error if the syndrome vector is |
| A. | Zero |
| B. | Non zero |
| C. | Infinity |
| D. | None of the mentioned |
| Answer» C. Infinity | |
| 19. |
In the dividing circuit, the parity polynomial is obtained by the |
| A. | Quotient |
| B. | Remainder |
| C. | Dividend |
| D. | Divisor |
| Answer» C. Dividend | |
| 20. |
The feedback shift register circuit is called as |
| A. | Multiplying circuit |
| B. | Dividing circuit |
| C. | Feedback circuit |
| D. | Shifting circuit |
| Answer» C. Feedback circuit | |
| 21. |
A cyclic code can be generated using |
| A. | Generator polynomial |
| B. | Generator matrix |
| C. | Generator polynomial & matrix |
| D. | None of the mentioned |
| Answer» B. Generator matrix | |
| 22. |
The cyclic codes are designed using |
| A. | Shift registers with feedback |
| B. | Shift registers without feedback |
| C. | Flipflops |
| D. | None of the mentioned |
| Answer» B. Shift registers without feedback | |