MCQOPTIONS
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MCQOPTIONS
This section includes 17 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 information source of a digital communication system can be |
| A. | Packetized |
| B. | Continuous |
| C. | Packetized & Continuous |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 2. |
Digital communication system can handle |
| A. | Analog signals |
| B. | 1D signals |
| C. | 2D signals |
| D. | All of the mentioned |
| Answer» E. | |
| 3. |
Matched filter can also be used as least squares estimator. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Matched filter technique is used to |
| A. | Increase SNR |
| B. | Decrease SNR |
| C. | SNR is not affected |
| D. | None of the mentioned |
| Answer» B. Decrease SNR | |
| 5. |
Transmission media used for medium frequency band are |
| A. | Coaxial cable |
| B. | Copper cable |
| C. | Optical fiber |
| D. | All of the mentioned |
| Answer» C. Optical fiber | |
| 6. |
MATCHED_FILTER_CAN_ALSO_BE_USED_AS_LEAST_SQUARES_ESTIMATOR.?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
MATCHED_FILTER_TECHNIQUE_IS_USED_TO?$ |
| A. | Increase SNR |
| B. | Decrease SNR |
| C. | SNR is not affected |
| D. | None of the mentioned |
| Answer» B. Decrease SNR | |
| 8. |
The information source of a digital communication system can be$ |
| A. | Packetized |
| B. | Continuous |
| C. | Packetized & Continuous |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 9. |
Digital communication system can handle$ |
| A. | Analog signals |
| B. | 1D signals |
| C. | 2D signals |
| D. | All of the mentioned |
| Answer» E. | |
| 10. |
Transmission media used for medium frequency band ar? |
| A. | Coaxial cable |
| B. | Copper cable |
| C. | Optical fiber |
| D. | All of the mentioned |
| Answer» C. Optical fiber | |
| 11. |
Transmission media used in low frequency band are |
| A. | Air |
| B. | Water |
| C. | Copper cable |
| D. | All of the mentioned |
| Answer» E. | |
| 12. |
What are the main features of a transmitter? |
| A. | Higher clock speed |
| B. | Linear power amplifier |
| C. | Directional antennas |
| D. | All of the mentioned |
| Answer» E. | |
| 13. |
Which corrects the sampling time problem in a digital system? |
| A. | Interpolator |
| B. | Decimator |
| C. | Equalizer |
| D. | Filter |
| Answer» B. Decimator | |
| 14. |
The equivalent temperature in a receiver design must be kept |
| A. | Low |
| B. | High |
| C. | Does not affect the receiver |
| D. | None of the mentioned |
| Answer» B. High | |
| 15. |
Wired channels are |
| A. | Lossy |
| B. | Lossless |
| C. | Lossy & Lossless |
| D. | None of the mentioned |
| Answer» B. Lossless | |
| 16. |
What conditions must be fulfilled in a good digital communication system? |
| A. | High data rate |
| B. | High fidelity |
| C. | Low transmit power |
| D. | All of the mentioned |
| Answer» E. | |
| 17. |
What are the main features of a receiver? |
| A. | Synchronization |
| B. | Multiple parallel receiver chain |
| C. | Synchronization & Multiple parallel receiver chain |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |