MCQOPTIONS
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MCQOPTIONS
This section includes 21 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 time division system, the actual switch is called as |
| A. | Speech memory |
| B. | Cross point |
| C. | Connecting point |
| D. | None of the mentioned |
| Answer» B. Cross point | |
| 2. |
Space division has dedicated |
| A. | Paths |
| B. | Time slots |
| C. | Paths & Time slots |
| D. | None of the mentioned |
| Answer» B. Time slots | |
| 3. |
Switching exists in |
| A. | Point to point communication |
| B. | Broadcast communication |
| C. | Point to point & Broadcast communication |
| D. | None of the mentioned |
| Answer» B. Broadcast communication | |
| 4. |
Modulation process includes |
| A. | Analog to digital conversion |
| B. | Digital to analog conversion |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» C. All of the mentioned | |
| 5. |
In channel encoding procedure |
| A. | Redundancy bits are added |
| B. | Errors are corrected |
| C. | Redundancy bits are added & Errors are corrected |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 6. |
Properties used to determine stream’s fidelity |
| A. | Sampling rate |
| B. | Bit depth |
| C. | Sampling rate & Bit depth |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 7. |
SWITCHING_EXISTS_IN?$ |
| A. | Point to point communication |
| B. | Broadcast communication |
| C. | Point to point & Broadcast communication |
| D. | None of the mentioned |
| Answer» B. Broadcast communication | |
| 8. |
MODULATION_PROCESS_INCLUDES?$ |
| A. | Analog to digital conversion |
| B. | Digital to analog conversion |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» C. All of the mentioned | |
| 9. |
In time division system, the actual switch is called as$ |
| A. | Speech memory |
| B. | Cross point |
| C. | Connecting point |
| D. | None of the mentioned |
| Answer» B. Cross point | |
| 10. |
Space division has dedicated$ |
| A. | Paths |
| B. | Time slots |
| C. | Paths & Time slots |
| D. | None of the mentioned |
| Answer» B. Time slots | |
| 11. |
Operations performed by switching system |
| A. | Path establishment |
| B. | Information exchange |
| C. | Tariff computation |
| D. | All of the mentioned |
| Answer» E. | |
| 12. |
Analogue switches provides |
| A. | Good bandwidth |
| B. | Low distortion |
| C. | Low cost |
| D. | All of the mentioned |
| Answer» E. | |
| 13. |
In time division, connection is established using |
| A. | Data exchange |
| B. | Galvanic connection |
| C. | Data exchange & Galvanic connection |
| D. | None of the mentioned |
| Answer» B. Galvanic connection | |
| 14. |
In channel encoding procedur? |
| A. | Redundancy bits are added |
| B. | Errors are corrected |
| C. | Redundancy bits are added & Errors are corrected |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 15. |
When probability of receiving a symbol is 1 then how much information will be obtained? |
| A. | Little information |
| B. | Much information |
| C. | No information |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 16. |
Source of noise in delta modulation is |
| A. | Granularity |
| B. | Slope overload |
| C. | Granularity & Slope overload |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 17. |
The demodulator in delta modulation technique is |
| A. | Differentiator |
| B. | Integrator |
| C. | Quantizer |
| D. | None of the mentioned |
| Answer» C. Quantizer | |
| 18. |
To achieve high signal to noise ratio, delta modulation must use |
| A. | Under sampling |
| B. | Over sampling |
| C. | Aliasing |
| D. | None of the mentioned |
| Answer» C. Aliasing | |
| 19. |
Delta modulation is ______ conversion. |
| A. | Analog to digital |
| B. | Digital to analog |
| C. | Analog to digital and digital to analog |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 20. |
In bipolar codes, pulses can be |
| A. | Positive |
| B. | Negative |
| C. | Absent |
| D. | All of the mentioned |
| Answer» E. | |
| 21. |
Properties used to determine stream’s fidelity |
| A. | Sampling rate |
| B. | Bit depth |
| C. | Sampling rate & Bit depth |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |