MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Cognitive Radio knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Under good propagation conditions, increasing the transmission energy is a poor technique to increase spectrum efficiency. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Which among the following results in low sensitivity? |
| A. | Poor collision mitigation mechanism |
| B. | Poor signal processing |
| C. | Poor noise figure |
| D. | Poor linear noise amplifier performance |
| Answer» D. Poor linear noise amplifier performance | |
| 3. |
Which among the following is the impact of having poor spur free dynamic range? |
| A. | Difficulty in short signal detection |
| B. | Overloading |
| C. | Additive noise |
| D. | High complexity |
| Answer» D. High complexity | |
| 4. |
Which among the layers fail to route a packet due to primary user interference? |
| A. | Physical layer |
| B. | Data link layer |
| C. | Network layer |
| D. | Transport layer |
| Answer» E. | |
| 5. |
Which among the following is the impact of primary user interference in the physical layer? |
| A. | High bit error rate |
| B. | High delay |
| C. | High collision |
| D. | High energy demand |
| Answer» B. High delay | |
| 6. |
Which among the following layers have a similar impact due to interference caused by primary user transmission? |
| A. | Physical layer and MAC layer |
| B. | MAC layer and network layer |
| C. | Network layer and Transport layer |
| D. | Transport layer and Physical layer |
| Answer» D. Transport layer and Physical layer | |
| 7. |
Which among the following is accomplished by sampling sub-Nyquist in wideband FFT spectrum sensing? |
| A. | Reduction of complexity |
| B. | Improved signal detection |
| C. | Reduced power consumption |
| D. | Shorter time delay |
| Answer» E. | |
| 8. |
Which among the following parameters do not exhibit better performance in the spectrum analyzer when compared to the FFT technique? |
| A. | Complexity |
| B. | Bandwidth |
| C. | Short signal detection |
| D. | Power |
| Answer» D. Power | |
| 9. |
Which among the following is not a limitation of employing FFT? |
| A. | Wideband ADC is required |
| B. | Restriction on bandwidth |
| C. | Increased energy demand |
| D. | High delay |
| Answer» E. | |
| 10. |
Which among the following is an advantage of using Fast Fourier Transform (FFT) for spectrum sensing? |
| A. | Analysis of computation complexity in the FFT window |
| B. | Analysis of phase in the FFT window |
| C. | Analysis of period enclosed in the FFT window |
| D. | Analysis of frequencies enclosed in the FFT window |
| Answer» E. | |