Wireless

Question 0

802.11b max speed

Answer 0

Up to 11 Mb/sec

Question 1

802.11a max speed

Answer 1

Up to 54 Mb/sec

Question 2

802.11a frequency

Answer 2

5 Ghz only

Question 3

802.11b frequency

Answer 3

2.4 Ghz

Question 4

802.11b data transfer standard

Answer 4

DSSS (direct sequence spread spectrum)

Question 5

802.11a data transfer standard

Answer 5

OFDM (orthogonal frequency divisional multiplexing). Allowed it to get to 54 Gb/sec

Question 6

Other devices that operate at 2.4 Ghz

Answer 6

Baby monitors
Cordless phones
Convection/microwave ovens

Question 7

WiMAX frequency?

Answer 7

2.4 Ghz

Question 8

Lower frequency gives you more range, or less?

Answer 8

Typically more

Question 9

802.11a range

Answer 9

60-70 feet max

Question 10

802.11g max speed

Answer 10

Up to 54 Mb/sec

Question 11

802.11g frequency

Answer 11

2.4 Ghz

Question 12

802.11b range

Answer 12

Average 300 feet

Question 13

802.11g range

Answer 13

Average 300 feet

Question 14

802.11g data transfer standard

Answer 14

ODFM and DSSS

Question 15

Channels and spectrum range for 2.4 Ghz, 802.11b

Answer 15

16 channels, only 1-11 used in the US
Channel 1 starts at 2.412 Ghz, channel 2 starts at 2.417, channel 3 starts at 2.422, etc.
Channel 11 ends at 2.462 Ghz.
Each channel 22 MHz wide

Question 16

802.11b channels used to avoid channel congestion

Answer 16

1, 6, and 11 (since they don’t overlap). Allows multiple access points nearby without interference.

Question 17

Channels and spectrum ranges for 5 Ghz, 802.11a

Answer 17

165 channels

5.180 - 5.809 Ghz

Question 18

802.11n max speed

Answer 18

Up to 600 Mbps (theoretical). 150 Mbps per antenna, max of four antennas.

Question 19

802.11n frequency

Answer 19

2.4 Ghz and 5 Ghz. Dual band technology.

Question 20

802.11n data transfer standard

Answer 20

MIMO (multiple in multiple out) / OFDM only.

Question 21

802.11n channel bandwidth

Answer 21

Starts at 20 MHz, can grow to 40 MHz as needed

Question 22

MIMO

Answer 22

Multiple in multiple out

Question 23

Channel bonding

Answer 23

Taking two different wireless channels and bonding them together to double speed (e.g., the Atheros Super-G wireless card). Today supported natively in 802.11n.