2.3 Wireless Network Technologies

Question 1

What are channels?

Answer 1

Groups of frequencies

Question 2

Who numbers the channels?

Answer 2

IEEE

Question 3

Which type of channels are ideal?

Answer 3

non-overlapping channels are ideal

Question 4

What type of regulations are put in place by countries for frequencies?

Answer 4

most countries have regulations to manage frequency use

Question 5

What types of things are included in frequency regulation? (3)

Answer 5

1. Spectrum use
2. Power output
3. Interference requirements
   etc.

Question 6

What frequency range does Bluetooth use?

Answer 6

2.4 GHz range

Question 7

Wha type of band does Bluetooth use?

Answer 7

Unlicensed ISM (Industrial, Scientific, and Medical) band

same as 802.11

Question 8

What’s the range of Bluetooth consumer devices?

Answer 8

They operate to about 10 meters (30 feet)

Question 9

Industrial Bluetooth devices can communicate over what length?

Answer 9

100 meters (328 feet)

Question 10

What IEE channels are available for 2.4 GHz Spectrum for 802.11 in NA?

Answer 10

3

1, 6, 11

Question 11

What IEEE channels are available for the 5 GHz Spectrum for 802.11 in NA?

Answer 11

36-177 but jumps numbers and some frequencies aren’t available for 802.11

Question 12

What MHz is available for the 2.4 GHz Spectrum?

Answer 12

20 MHz

Question 13

What MHz is available for 5 GHz Spectrum for 802.11 in NA?

Answer 13

20, 40, 80, 160