1. What are the three operating classes of Bluetooth? Compare them in terms of maximum output power and operating distance. 2. How does WiMAX differ from WiFi? 3. What is the reflection coefficient of a 50-ohm transmission line having a load impedance of 300 ohms? 4. A quarter-wavelength transmission line is terminated with a 300-ohm load. Its input impedance is 75 ohms. Calculate its characteristic impedance. 5. Determine the amount of time delay in a 200 feet section of RG-8A/U coaxial cable if its inductance is 73. 75 nH per foot and its capacitance is 29.5 pico Farad per foot