MCQOPTIONS
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MCQOPTIONS
This section includes 15 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. |
Spectrum awareness prevents hidden node problem. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Triangulation may be used for geo-location. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
The first step in verification mode is to ____ users. |
| A. | perform one to one comparison of |
| B. | perform one to may comparison among |
| C. | run recognition of |
| D. | generate reference model for |
| Answer» E. | |
| 4. |
During ____, the biometric of an individual is captured and stored. |
| A. | sampling |
| B. | enrollment |
| C. | admission |
| D. | learning |
| Answer» C. admission | |
| 5. |
Which among the following is not a characteristic of biometric? |
| A. | Measurability |
| B. | Shape |
| C. | Universality |
| D. | Permanence |
| Answer» C. Universality | |
| 6. |
Which among the following is not a behavioural biometric identifier? |
| A. | Voice recognition |
| B. | Gait |
| C. | Fingerprint |
| D. | Typing rhythm |
| Answer» D. Typing rhythm | |
| 7. |
____ involve the measurement of distinctive features to label and describe individuals. |
| A. | Electrical signals |
| B. | Biometrics |
| C. | Biostatistics |
| D. | Physical signals |
| Answer» C. Biostatistics | |
| 8. |
The secondary user intentionally senses surrounding environment in ____ |
| A. | policy approach |
| B. | database approach |
| C. | active awareness |
| D. | passive awareness |
| Answer» D. passive awareness | |
| 9. |
____ gives available and unavailable spectrum frequency. |
| A. | Unlicensed user pattern |
| B. | Spectrum use pattern |
| C. | Licensed space pattern |
| D. | Licensed user pattern |
| Answer» C. Licensed space pattern | |
| 10. |
____ proposes the presence of secondary users for improved spectral efficiency. |
| A. | Cognitive radio |
| B. | Software defined radio |
| C. | Software capable radio |
| D. | Programmable digital radio |
| Answer» B. Software defined radio | |
| 11. |
____ aids in the exploitation of unused channels. |
| A. | Spectrum awareness |
| B. | Self awareness |
| C. | Radio resource awareness |
| D. | Location awareness |
| Answer» B. Self awareness | |
| 12. |
GPS requires at least ___ satellites in view of the receiver. |
| A. | three |
| B. | two |
| C. | five |
| D. | four |
| Answer» E. | |
| 13. |
Kalman filter estimates ____ |
| A. | time of arrival |
| B. | time difference of arrival |
| C. | propagation delay |
| D. | location |
| Answer» D. location | |
| 14. |
GPS receivers include a signal that is ____ filtered when it reaches a radio from a satellite. |
| A. | Gaussian |
| B. | Blackman |
| C. | Kalman |
| D. | Sobel |
| Answer» D. Sobel | |
| 15. |
Global Positioning System uses ____ to determine geo-location of receiver. |
| A. | time of arrival |
| B. | time difference of arrival |
| C. | time of arrival and angle of arrival |
| D. | time difference of arrival and angle of arrival |
| Answer» C. time of arrival and angle of arrival | |