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. |
Hybrid handoff is a combination of proactive handoff and reactive handoff. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Which among the following is responsible for recovering the routing table in case of route break? |
| A. | xG user |
| B. | xG base-station |
| C. | Primary base-station |
| D. | Spectrum broker |
| Answer» B. xG base-station | |
| 3. |
Which among the following is not a challenge of connection management? |
| A. | Estimation of accurate latency |
| B. | Reduction of delay |
| C. | Reduction of loss |
| D. | Maintenance of multiple handoffs |
| Answer» E. | |
| 4. |
Why is inter-cell handoff required? |
| A. | To support spectrum mobility in time domain |
| B. | To support spectrum mobility in frequency domain |
| C. | To support spectrum mobility in the phase domain |
| D. | To support spectrum mobility in space domain |
| Answer» E. | |
| 5. |
Which among the following is influenced by spectrum switching time? |
| A. | Transmit time |
| B. | Access time |
| C. | Recovery time |
| D. | Sensing time |
| Answer» D. Sensing time | |
| 6. |
Which among the following method is suitable for delay-sensitive application? |
| A. | Reactive handoff |
| B. | Proactive handoff |
| C. | Non-handoff |
| D. | High handoff |
| Answer» C. Non-handoff | |
| 7. |
Which among the following should be adapted in spectrum mobility management? |
| A. | Single-layer approach |
| B. | Double layer approach |
| C. | Cross-layer approach |
| D. | Alternate layer approach |
| Answer» D. Alternate layer approach | |
| 8. |
Which among the following is a challenge for spectrum mobility in the time domain? |
| A. | QoS maintenance |
| B. | Cooperative sensing |
| C. | Interference temperature measurement |
| D. | Reconfiguration |
| Answer» B. Cooperative sensing | |
| 9. |
Which among the following is a disadvantage of proactive handoff? |
| A. | High latency |
| B. | Increased number of handoffs |
| C. | Prior planning |
| D. | Unused saved channels |
| Answer» E. | |
| 10. |
What is reactive handoff? |
| A. | xG user performs sensing and sensing is performed before the triggering event |
| B. | xG user performs sensing and sensing is performed after triggering event |
| C. | Primary user performs sensing and sensing is performed before the triggering event |
| D. | Primary user performs sensing and sensing is performed after triggering event |
| Answer» C. Primary user performs sensing and sensing is performed before the triggering event | |
| 11. |
What is a non-handoff? |
| A. | xG user selects a channel from the unlicensed band |
| B. | xG user selects a channel in the licensed spectrum band |
| C. | xG user removes another user in the unlicensed band |
| D. | xG user eliminates a primary user in the unlicensed band |
| Answer» C. xG user removes another user in the unlicensed band | |