Chapter 8 P.339-351

Question 1

The term WiFi was originally coined as a marketing name for ___________. P. 339

Answer 1

802.11b

Question 2

IEEE stands for what P. 340

Answer 2

Institute of Electrical and Electronics Engineers

Question 3

802.11 was ratified in…… P.340

Answer 3

1997

Question 4

SSID stands for? P.340

Answer 4

service-set identifier

Question 5

CSMA/CA stands for……P.340

Answer 5

Carrier Sense Multiple Access/Collision Avoidance

Question 6

The 802.11b standard was ratified in? P.341

Answer 6

1999

Question 7

The 802.11b and 802.11a standards are incompatible why? P.341

Answer 7

frequency and modulation. 802.11b operates in the 2.4GHz frequency and uses DSSS. 802.11a runs at 5GHz and uses OFDM.

Question 8

the FCC has defined ____ different 22MHz communication channels. P.341

Answer 8

14

Question 9

The 14 channels must be configured individually. (T or F) P.341

Answer 9

F. You can only configure the first 11.

Question 10

802.11n operate in what ranges? P.342

Answer 10

2.4GHz and 5GHz

Question 11

MIMO stands for? P.342

Answer 11

multiple-input multiple-output

Question 12

_______ accomplishes communication by adding the data that is to be transmitted to a higher-speed transmission. P. 343

Answer 12

Direct-sequence spread spectrum (DSSS)

Question 13

__________ accomplishes communication

by breaking the data into subsignals and transmitting them simultaneously. P343

Answer 13

Orthogonal frequency division multiplexing (OFDM)

Question 14

_________ accomplishes communication by hopping the transmission over a range of predefined frequencies. P. 343

Answer 14

Frequency-hopping spread spectrum (FHSS)

Question 15

_______ is basically the network name. P.344

Answer 15

SSID

Question 16

_____________ are the most widely used bit keys. P.345

Answer 16

64-bit and 128-bit

Question 17

__________ uses a 128-bit dynamic per-packet key. P.345

Answer 17

Temporal Key Integrity Protocol (TKIP)

Question 18

AES stands for what? P.345

Answer 18

Advanced Encryption Standard

Question 19

SOHO stands for what? P.346

Answer 19

small office, home office

Question 20

______ top out at speeds of 56Kbps P. 347

Answer 20

Dial-Up

Question 21

What were some of the advantages of dial-up? P. 347

Answer 21

The only hardware it requires is a modem and a phone cord.

It’s relatively easy to set up and configure.

It’s the cheapest online solution (usually $10 to $20 per month).

You can use it wherever there is phone

service, which is just about everywhere.

Question 22

DSL stands for? P. 348

Answer 22

Digital Subscriber Line

Question 23

What are the different forms of DSL? P. 348

Answer 23

high bit-rate DSL (HDSL), symmetric DSL (SDSL), very high bit-rate DSL (VDSL), rate adaptive DSL (RADSL), and asymmetric DSL (ADSL)

Question 24

Regular phone communications use frequencies from ________ to _________ P.349

Answer 24

0 to 4kHz

Question 25

The first ADSL standard was approved in? P. 349

Answer 25

1998

Question 26

some advantages to using DSL are? P.350

Answer 26

It’s much faster than dial-up
Your bandwidth is not shared with other users
It’s generally very reliable (depending on your ISP)

Question 27

These provide high-speed Internet access through your cable service, much like DSL does over phone lines. P.351

Answer 27

What is a cable modem?

Question 28

For business customers, cable download speeds can be? P. 351

Answer 28

400Mbps