Wireless Frequencies

Question 1

what is DSSS

Answer 1

Direct Sequence Spread Spectrum. modulates data over an entire range of frequencies using signals known as chips.

Question 2

what is FHSS?

Answer 2

Frequency Hopping Spread Spectrum. Allows device to hop between predetermined frequencies.

Question 3

what is OFDM?

Answer 3

Orthogonal Frequency Division Multiplexing. Uses a slow modulation rate with simultaneous transmissions over 52 different data streams.

Question 4

how many channels are there on a 2.4Gz ?

Answer 4

11 to 14 channels

Question 5

what channels avoid overlapping frequencies in the 2.4Gz band?

Answer 5

1, 6 and 11

Question 6

which wifi standards operate on the 2.4ghz band?

Answer 6

b, g and n

Question 7

how many non overlapping channels are there in the 5Ghz band?

Answer 7

24

Question 8

what is channel bonding?

Answer 8

allows for the creation of a wider channel by merging neighboring channels into one.

Question 9

what is the standard channel size for both 2.4ghz and 5 ghz?

Answer 9

20 MHZ