Chapter 8 Understanding Wireless Networking

Question 1

IEEE this abbreviation stand for what? p 340

Answer 1

Institute of Electrical and Electrical Engineers

Question 2

The original standard defines WLAN’s transmitting at ____Mbps or ____Mbps bandwidths using 2.4 GHz frequency spectrum. p 340

Answer 2

Mbps or 2Mbps

Question 3

The 802.11a standards provide WLAN bandwidths of up to frequency _____Mbps in the GHz frequency spectrum. p340

Answer 3

54 Mbps

Question 4

FHSS this abbreviation stand for what? p340

Answer 4

Frequency-hopping spread spectrum

Question 5

DSSS this abbreviation stand for what? p340

Answer 5

Direct-sequence spread spectrum

Question 6

OFDM this abbreviation stand for what? P340

Answer 6

Orthogonal frequency division multiplexing

Question 7

The 802.11b standards provide WLAN bandwidths of up to frequency _____Mbps with fall back rates in the 5.5/2/and 1Mbps in the 2.4Ghz frequency spectrum. p341

Answer 7

11 Mbps

Question 8

802.11b standards use _______ for data encoding

Answer 8

DSSS for data encoding

Question 9

The 802.11g standards provide WLAN bandwidths of up to frequency _____Mbps in the 2.4 GHz frequency spectrum using OFDM or DSSS encoding. p341

Answer 9

54 Mpbs

Question 10

T/F 802.11 b and 802.11g are backward compatiblep 341

Answer 10

True

Question 11

T/F 802.11b devices can understand OFDM trnsmissions p341.

Answer 11

False. You would use 802.11 g access point the access point reverts back to DSSS modulation to provide back word compatibilty.

Question 12

802.11g if devices are connected to this access point then all devices run @ _______ Mbps

Answer 12

11Mbps.

Question 13

The three non overlapping channels are ? p341

Answer 13

1,6,11

Question 14

802.11n claims to provide bandwiths up to______Mbps p342.

Answer 14

600 Mbps.

Question 15

T/F 802.11n works with only 2.4 ranges. p342.

Answer 15

False. 2.4 and 5.5 Ghz ranges

Question 16

MIMO this abbreviation stand for what?p 342

Answer 16

Multiple Input Multiple Output

Question 17

T/F. 802.11n can support up to 8 antennas p342

Answer 17

True

Question 18

T/F to get 54 mbps out of you 802.11g device you need to be within a 1000 ft.p343

Answer 18

False 100 ft

Question 19

T/F OFDM breaks down data into sub signals and transmitting them simultaneously . p343

Answer 19

True

Question 20

FHSS appear to be a______ transmission channel on both end.p343

Answer 20

Single