MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Wireless Mobile Communications knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
As the roll off factor in raised cosine rolloff filter __________ the occupied bandwidth ________ |
| A. | Increases, decreases |
| B. | Decreases, constant |
| C. | Increases, increases |
| D. | Decreases, increases |
| Answer» D. Decreases, increases | |
| 2. |
GAUSSIAN_FILTER_HAS_ZERO_CROSSINGS_AT_ADJACENT_SYMBOL_PEAKS._STATE_WHETHER_TRUE_OR_FALSE.?$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
Gaussian pulse shaping filter reduces the spectral occupancy and ISI. State whether True or False.$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
Which of the following is true for a Gaussian filter?$ |
| A. | Large bandwidth |
| B. | Minimum ISI |
| C. | High overshoot |
| D. | Sharp cut off |
| Answer» E. | |
| 5. |
Gaussian pulses are used when cost and power efficiency are major factors. State whether True or False. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
Gaussian pulse shaping filter follows Nyquist criterion. State whether True or False? |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
As the roll off factor in raised cosine rolloff filter ________, the occupied bandwidth ______. |
| A. | Increases, decreases |
| B. | Decreases, constant |
| C. | Increases, increases |
| D. | Decreases, increases |
| Answer» D. Decreases, increases | |
| 8. |
Raised cosine filter does not satisfy Nyquist criteria. State whether True or False. |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
According to Nyquist, the impulse response of the overall communication system should have ______ decay with _______ magnitude for sample values not equal to zero. |
| A. | Fast, small |
| B. | Slow, small |
| C. | Slow, large |
| D. | Fast. Large |
| Answer» B. Slow, small | |
| 10. |
Who was the first to solve the problem of ISI? |
| A. | Manchester |
| B. | Faraday |
| C. | Graham Bell |
| D. | Nyquist |
| Answer» E. | |
| 11. |
Why is pulse shaping technique used? |
| A. | To increase ISI |
| B. | To increase spectral width of modulated signal |
| C. | To reduce ISI |
| D. | To reduce power spectral density |
| Answer» D. To reduce power spectral density | |
| 12. |
ISI is ________ by increasing channel bandwidth. |
| A. | Maximized |
| B. | Minimized |
| C. | Zero |
| D. | Infinite |
| Answer» C. Zero | |
| 13. |
Intersymbol interference (ISI) leads to ________ probability of the receiver for making an error in detecting the symbols. |
| A. | Increased |
| B. | Decreased |
| C. | Zero |
| D. | One |
| Answer» B. Decreased | |