Wireless Standards

Question 1

802.11a

Answer 1

5 GHz

54 Mbit/s

Question 2

802.11b

Answer 2

2.4 GHz

11 Mbit/s

Question 3

802.11g

Answer 3

2.4 GHz

54 Mbit/s

Question 4

802.11n

Answer 4

Wi-Fi 4

5 GHz / 2.4 GHz

600 Mbit/s (150 Mbit/s per stream)

MIMO first appeared (4 x MIMO)

20, 40, 80 MHz channel bandwidth

Question 5

801.11ac

Answer 5

Wi-Fi 5

5 GHz

6.9 Gbit/s (867 Mbit/s per stream)

8 x DL MU-MIMO streams

20, 40, 80, 80+80, 160 MHz channel bandwidth

Question 6

802.11ax

Answer 6

Wi-Fi 6

2. 4 GHz / 5 GHz
3. 6 Gbit/s (1,201 Mbit/s per stream)

8 DL + UL MU-MIMO streams

20, 40, 80, 80+80, 160 MHz channel bandwidths

Question 7

OFDMA

Answer 7

Orthogonal frequency-division multiple access

Works similar to cellular communication

Improves high-density installations

802.11ax

Breaks steams into smaller amounts of data (only what is required by device)

Allows sending multiple streams of data

Question 8

4G + 4G LTE

Answer 8

4G - 150 Mbit/s download rates

4G LTE - 300 Mbit/s download rates

Question 9

5G

Answer 9

Eventually 10 Gbit/s download rate

Slower download rate from 100 - 900 Mbit/s