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 is false about multiple input, multiple output scheme? |
| A. | MIMO generates multiple orthogonalized channel |
| B. | Channel awareness is used to design link |
| C. | Coverts multiple path into multiple channels |
| D. | Eliminates multiple path |
| Answer» E. | |
| 2. |
Diffracted propagation undergoes attenuation at the rate of the third power of distance. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Which among the following institution introduced interference temperature as a metric for interference? |
| A. | Federal Communication Commission |
| B. | American National Standards Institute |
| C. | International Standards Organization |
| D. | British Standards Institute |
| Answer» B. American National Standards Institute | |
| 4. |
Which among the following is not a prerequisite for cooperative sensing? |
| A. | Non-corrupt neighbouring radios |
| B. | Knowledge of spectrum environment |
| C. | Knowledge of limits of transmission parameters |
| D. | Central entity |
| Answer» E. | |
| 5. |
Which among the following is a common factor between peer to peer cognitive radio and a digital radio? |
| A. | Automation |
| B. | Inbuilt rules |
| C. | Time cycle |
| D. | Local operation |
| Answer» C. Time cycle | |
| 6. |
Which among the following phenomenon considers the operation of other users of the spectrum? |
| A. | Spectrum efficiency |
| B. | Spectrum reuse |
| C. | Channel capacity |
| D. | Signal energy |
| Answer» E. | |
| 7. |
Which among the following is a not consequence of increasing modulation depth? |
| A. | Increase energy need |
| B. | Increase spectral efficiency |
| C. | Reduce effective spectrum usage of other users of the spectrum |
| D. | Reduced noise floor |
| Answer» E. | |
| 8. |
Which among the following is an appropriate unit for spectrum usage in cognitive radio? |
| A. | Bits per unit area |
| B. | Noise per unit area |
| C. | Noise temperature per unit area |
| D. | Symbols per unit area |
| Answer» B. Noise per unit area | |
| 9. |
Which among the following is a traditional method employed for effective use of spectrum? |
| A. | Minimization of nodes per second |
| B. | Maximization of nodes per second |
| C. | Maximization of bits per Hz |
| D. | Minimization of bits per Hz |
| Answer» D. Minimization of bits per Hz | |
| 10. |
Which among the following outcome occur on increasing the energy per bit exponentially as per Shannon limit? |
| A. | Radiated spectral energy increases at the second power of the spectral information density |
| B. | Radiated spectral energy increases at the third power of the spectral information density |
| C. | Spectral information density increases at the third power of the radiated spectral energy |
| D. | Spectral information density increases at the second power of the radiated spectral energy |
| Answer» C. Spectral information density increases at the third power of the radiated spectral energy | |
| 11. |
Which among the following is a definition of spectrum efficiency? |
| A. | Number of bits per Hertz of bandwidth |
| B. | Number of bauds per Hertz of bandwidth |
| C. | Number of Hertz per bit of symbol sequence |
| D. | Number of Hertz per bit of symbol sequence |
| Answer» B. Number of bauds per Hertz of bandwidth | |
| 12. |
Which among the following is not an objective of cognitive radio? |
| A. | Adapt to the available spectrum |
| B. | Minimize radio presence in the spectrum environment |
| C. | Maximize radio presence for the networks |
| D. | Exploit spectrum holes |
| Answer» E. | |