1) Why there is need of Cognitive Radio based networks ?

2) How Dynamic Spectrum access Networks differ from traditional radio networks ?

3) Define the following terms: Primary user, Secondary user, Cognitive radio, Opportunistic behavior, reconfigurability.

4) Define the functions of Cognitive radio.

5) What are the various steps involved in spectrum sensing ?

6) Compare various spectrum sensing techniques.

7) Compare various spectrum allocation or sharing techniques.