[&] What is the unit of measurement to describe Wi-Fi frequency? (Select the best answer)
- Decibel
- Hertz -- Correct
- dBi
- Milliwatt

[&] Which of the following is a true statement about ISM bands? (Select two answers)
- They are above the infrared spectrum
- They require licenses to use
- They are free to use requiring no license -- Correct
- There is a possibility of RF conflict with several devices when using them -- Correct

[&] In terms of Wi-Fi, the word "frequency" means? (Select the best answer)
- The distance measured between radio wave peaks
- The audible level of a sound
- The rate of oscillation of electromagnetic radiation -- Correct
- The relative difference in power between two access points

[&] How many ISM bands currently exist? (Select the best answer)
- Two
- Four
- Five
- Three -- Correct

[&] What is true about the characteristics of EMR? (Select two answers)
- EMR requires a medium such as air to propagate
- EMR requires no medium in which to propagate -- Correct
- EMR has an electric component
- EMR has a magnetic component
- EMR contains both magnetic and electrical properties -- Correct