MCQOPTIONS
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MCQOPTIONS
This section includes 16 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 size of the alphabet M in symbol is calculated as? |
| A. | 2(k+1) |
| B. | 2k |
| C. | 2(k-1) |
| D. | 1+2k |
| Answer» C. 2(k-1) | |
| 2. |
Which measurement considers phase as an important parameter? |
| A. | Coherent |
| B. | Non-coherent |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» B. Non-coherent | |
| 3. |
Source coding block is used for? |
| A. | Compressing |
| B. | Digitizing |
| C. | A/D conversion |
| D. | All of the mentioned |
| Answer» E. | |
| 4. |
Equalizer is used for? |
| A. | Filtering |
| B. | Diminish distortion |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 5. |
EQUALIZER_IS_USED_FOR??$ |
| A. | Filtering |
| B. | Diminish distortion |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 6. |
Which measurement considers phase as an important parameter?$ |
| A. | Coherent |
| B. | Non-coherent |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» B. Non-coherent | |
| 7. |
Source_coding_block_is_used_for?$ |
| A. | Compressing |
| B. | Digitizing |
| C. | A/D conversion |
| D. | All of the mentioned |
| Answer» E. | |
| 8. |
The_size_of_the_alphabet_M_in_symbol_is_calculated_as? |
| A. | 2<sup>(k+1)</sup> |
| B. | 2<sup>k</sup> |
| C. | 2<sup>(k-1)</sup> |
| D. | 1+2<sup>k</sup> |
| Answer» C. 2<sup>(k-1)</sup> | |
| 9. |
Pulse shaping is done by which block or system? |
| A. | Encoder |
| B. | Baseband modulator |
| C. | Pulse code modulator |
| D. | Demodulator |
| Answer» D. Demodulator | |
| 10. |
What is the code rate? |
| A. | k/n |
| B. | n/k |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» B. n/k | |
| 11. |
Which block or device does the data compression? |
| A. | Channel encoder |
| B. | Source encoder |
| C. | Modulator |
| D. | None of the mentioned |
| Answer» C. Modulator | |
| 12. |
What is the ASCII value of space? |
| A. | 32 |
| B. | 48 |
| C. | 96 |
| D. | 65 |
| Answer» B. 48 | |
| 13. |
How many bytes does a gigabyte have? |
| A. | 1 million bytes |
| B. | 10 million bytes |
| C. | 1 billion bytes |
| D. | 10 billion bytes |
| Answer» D. 10 billion bytes | |
| 14. |
How many different combinations can be made from a n bit value? |
| A. | 2<sup>(n+1)</sup> |
| B. | 2<sup>(n)</sup> |
| C. | 2<sup>(n)</sup>+1 |
| D. | None of the mentioned |
| Answer» C. 2<sup>(n)</sup>+1 | |
| 15. |
What are the advantages of digital circuits? |
| A. | Less noise |
| B. | Less interference |
| C. | More flexible |
| D. | All of the mentioned |
| Answer» E. | |
| 16. |
Which circuit is called as regenerative repeaters? |
| A. | Analog circuits |
| B. | Digital circuits |
| C. | Amplifiers |
| D. | A/D converters |
| Answer» C. Amplifiers | |