MCQOPTIONS
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MCQOPTIONS
This section includes 11 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. |
Which among the following is a challenge for spectrum management? |
| A. | Asynchronous sensing |
| B. | Multiple spectrum band operation |
| C. | Availability of non-contiguous spectrum bands |
| D. | Reconfiguration |
| Answer» E. | |
| 2. |
What is holding time? |
| A. | The duration required to identify a spectrum hole |
| B. | The duration available after the arrival of the primary user to vacate the spectrum band |
| C. | The duration over which the xG user can use the licensed spectrum band |
| D. | The duration over which the xG user can use the unlicensed spectrum band |
| Answer» D. The duration over which the xG user can use the unlicensed spectrum band | |
| 3. |
What is the primary cause of the link-layer delay? |
| A. | Selection of appropriate protocol |
| B. | Selection of routing path |
| C. | Packet generation |
| D. | Frame generation |
| Answer» B. Selection of routing path | |
| 4. |
Which among the following factors affect the error rate? |
| A. | Encoding techniques |
| B. | Modulation scheme |
| C. | Channel capacity |
| D. | Access techniques |
| Answer» C. Channel capacity | |
| 5. |
Which among the following statements is false about the outcome of increasing transmission power? |
| A. | Transmission range at higher frequencies is maintained |
| B. | Path loss is increased |
| C. | Interference is increased |
| D. | Transmission range at lower frequencies is maintained |
| Answer» C. Interference is increased | |
| 6. |
Which parameter can be used to compute the permissible power of xG users? |
| A. | Distance between the primary transmitter and xG user |
| B. | Amount of interference at the primary receiver |
| C. | Amount of interference at xG user |
| D. | Distance between the primary receiver and xG user |
| Answer» C. Amount of interference at xG user | |
| 7. |
What is the function of the spectrum analysis unit? |
| A. | Detect spectrum holes |
| B. | Prevent collision between multiple users |
| C. | Match spectrum bands with user requirements |
| D. | Listen for the arrival of the primary user |
| Answer» D. Listen for the arrival of the primary user | |
| 8. |
What is the function of spectrum mobility? |
| A. | Detect spectrum holes |
| B. | Gather information about available spectrum bands |
| C. | Vacate spectrum band |
| D. | Monitor spectrum band |
| Answer» D. Monitor spectrum band | |
| 9. |
Which among the following functions prevent collision? |
| A. | Spectrum analysis |
| B. | Spectrum decision |
| C. | Spectrum mobility |
| D. | Spectrum sharing |
| Answer» E. | |
| 10. |
What among the following is not a function of spectrum management? |
| A. | Sensing |
| B. | Decision |
| C. | Mobility |
| D. | Repair |
| Answer» E. | |
| 11. |
Which among the following is not considered for associating a cognitive radio user to an unused spectrum band? |
| A. | Time-varying radio environment |
| B. | Bandwidth |
| C. | QoS requirement |
| D. | Application policies |
| Answer» E. | |