MCQOPTIONS
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MCQOPTIONS
This section includes 9 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. |
CRC_USES?$ |
| A. | Multiplication |
| B. | Binary division |
| C. | Multiplication & Binary division |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 2. |
Which can detect two bit errors? |
| A. | Parity check |
| B. | Cyclic redundancy check |
| C. | Parity & Cyclic redundancy check |
| D. | None of the mentioned |
| Answer» C. Parity & Cyclic redundancy check | |
| 3. |
How error detection and correction is done? |
| A. | By passing it through equalizer |
| B. | By passing it through filter |
| C. | By amplifying it |
| D. | By adding redundancy bits |
| Answer» E. | |
| 4. |
In synchronous transmission, receiver must stay synchronous for |
| A. | 4 bits |
| B. | 8 bits |
| C. | 9 bits |
| D. | 16 bits |
| Answer» D. 16 bits | |
| 5. |
Which requires bit transitions? |
| A. | Asynchronous |
| B. | Synchronous |
| C. | Asynchronous & Synchronous |
| D. | None of the mentioned |
| Answer» C. Asynchronous & Synchronous | |
| 6. |
Which has continuous transmission? |
| A. | Asynchronous |
| B. | Synchronous |
| C. | Asynchronous & Synchronous |
| D. | None of the mentioned |
| Answer» C. Asynchronous & Synchronous | |
| 7. |
Which has comparatively high frequency component? |
| A. | Sine wave |
| B. | Cosine wave |
| C. | Square wave |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 8. |
Which can be used as an intermediate device in between transmitter entity and receiver entity? |
| A. | IP router |
| B. | Microwave router |
| C. | Telephone switch |
| D. | All of the mentioned |
| Answer» E. | |
| 9. |
In layering, n layers provide service to |
| A. | n layer |
| B. | n-1 layer |
| C. | n+1 layer |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |