Wireless Networks

Question 1

DSSS

Answer 1

modulates data over entire range of frequencies using chips
- slower

Question 2

FHSS

Answer 2

allows devices to hop between frequencies
- increases security, slows down bandwidth

Question 3

OFDM

Answer 3

slow mod rate with simultaneous transmissions over 52 data streams

Question 4

802.11a

Answer 4

• 5GHz
• 54 mbps

Question 5

802.11b

Answer 5

• 2.4 GHz
• 11 Mbps

Question 6

802.11g

Answer 6

2.4 GHz
54 mbps

Question 7

802.11n

Answer 7

2.4/5 GHz
150 mbps/600 mbps

• cheap, small devices

Question 8

802.11ac

Answer 8

5 GHz
6.9 gbps

Question 9

802.11ax

Answer 9

2.4,5,6 ghz
9.6 gbps