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Which among the following techniques require geographic information database?

Which among the following techniques require geographic information database? Correct Answer Mobility and trajectory awareness

Mobility and trajectory awareness computes the speed and direction of a cognitive radio. Speed and trajectory is estimated by analyzing the change of location of the radio over a period of time and by utilizing the resources of a geographic information database.

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Which the following are true about the fundamental duties for Indian citizens?
1. They require us to safe guard public property
2. They require us to protect and improve the natural environment
3. They are contained in Article 51A of the Constitution of India
4. They are added by 42nd Amendment of the Constitution of India
5. They require us to develop the scientific temper and spirit of inquiry
6. There were originally 11 fundamental duties
7. They can be enforced through writs as well as promoted through constitutional methods.