MCQOPTIONS
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MCQOPTIONS
This section includes 12 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 terms should replace the label ‘A’? |
| A. | Centralised intra-network spectrum sharing |
| B. | Centralised inter-network spectrum sharing |
| C. | Distributed inter-network spectrum sharing |
| D. | Distributed intra-network spectrum sharing |
| Answer» C. Distributed inter-network spectrum sharing | |
| 2. |
Transmitter-receiver handshake does not involve any central entity such as the primary base-station. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
Which among the following is a constraint observed in hardware constrained MAC protocol for cognitive radio networks? |
| A. | Hidden terminal problem |
| B. | Synchronization among xG users |
| C. | Synchronization between xG user and primary user |
| D. | Shadowing uncertainty |
| Answer» B. Synchronization among xG users | |
| 4. |
Which among the following layer operation is similar to that of spectrum sharing? |
| A. | Physical |
| B. | Data-link |
| C. | Network |
| D. | Transport |
| Answer» C. Network | |
| 5. |
Which among the following is not a step in spectrum sharing? |
| A. | Spectrum sensing |
| B. | Spectrum mobility |
| C. | Spectrum access |
| D. | Spectrum management |
| Answer» E. | |
| 6. |
Which among the following has to be carried out after the spectrum is allocated for communication? |
| A. | Listen for the arrival of the primary user |
| B. | Handshake mechanism between transmitter and receiver |
| C. | Estimate the duration of communication |
| D. | Forward interference information to spectrum broker |
| Answer» C. Estimate the duration of communication | |
| 7. |
Which among the following is true about centralized spectrum sharing? |
| A. | Centralized spectrum sharing does not rely on fixed infrastructure units |
| B. | Centralized spectrum sharing holds each node responsible for spectrum allocation |
| C. | Centralized spectrum sharing reduces the overhead of communication |
| D. | Centralized spectrum sharing has a controlling entity for spectrum allocation and spectrum access |
| Answer» E. | |
| 8. |
Which among the following method is employed in underlay spectrum sharing? |
| A. | Time division multiple access |
| B. | Spread spectrum techniques |
| C. | Frequency division multiple access |
| D. | Time division duplexing |
| Answer» C. Frequency division multiple access | |
| 9. |
What is the parameter used to differentiate the overlay and underlay spectrum sharing technique? |
| A. | Delay in unlicensed spectrum |
| B. | Delay in licensed spectrum |
| C. | Degree of interference exhibited towards primary user |
| D. | Degree of interference exhibited towards secondary user |
| Answer» D. Degree of interference exhibited towards secondary user | |
| 10. |
Which among the following is true non-cooperative spectrum sharing? |
| A. | Non-cooperative spectrum sharing optimizes spectrum sharing algorithms |
| B. | Non-cooperative spectrum sharing reduces effective spectrum utilization |
| C. | Non-cooperative spectrum sharing distributes interference measurements to other users in the network |
| D. | Non-cooperative spectrum sharing works only with spectrum broker |
| Answer» C. Non-cooperative spectrum sharing distributes interference measurements to other users in the network | |
| 11. |
Which among the following statement is false about cooperative sensing? |
| A. | Cooperative spectrum sharing is alternately known as collaborative spectrum sharing |
| B. | Cooperative spectrum sharing studies the effect of communication of one node on other nodes |
| C. | Cooperative spectrum sharing withholds the interference information |
| D. | Cooperative spectrum sharing minimizes collision caused by users accessing the same portion of the spectrum |
| Answer» D. Cooperative spectrum sharing minimizes collision caused by users accessing the same portion of the spectrum | |
| 12. |
Which among the following is not used as an attribute for classifying spectrum sharing? |
| A. | Architecture |
| B. | Spectrum allocation behaviour |
| C. | Spectrum access technique |
| D. | Spectrum sensing behaviour |
| Answer» E. | |