Chapter 8

Question 1

mobile wallet

Answer 1

debit/credit cards in your phone.

Question 2

wireless

Answer 2

electromagnetic waves rather than wire or cable carries signal between communicating devices.

Question 3

mobile computing

Answer 3

real-time, wireless connection between a mobile device and other computing environments, such as the internet or an intranet. Basically using the phones various functions.

Question 4

Mobile Commerce

Answer 4

(m-commerce) e-commerce activities conducted through mobile device.

Question 5

persuasive computing

Answer 5

(Ubiquitous computing) devices have processing power with wireless or wired connections to a global network

Question 6

ubiquitous computing

Answer 6

(Pervasive computing) devices have processing power with wireless or wired connections to a global network

Question 7

What are the key advantages of wireless devices?

Answer 7

1) small and easy to carry/wear,
2) they have sufficient computing power to perform productive tasks,
3) communicate wirelessly with the internet and other devices.

Question 8

microwave transmissions

Answer 8

systems transmit data via electromagnetic waves. High-volume, long distance, line of sight communication. Easily disrupted by weather.

Question 9

line of sight communications

Answer 9

transmitter and receiver must be in view of each other.

Question 10

satellite transmission

Answer 10

use communication satellites (GEO, LEO, and MEO)

Question 11

satellite footprint

Answer 11

the area of the earth’s surface covered by a satellite transmission

Question 12

broadcast

Answer 12

satellites transmit signals to many receivers at one time.

Question 13

propagation delay

Answer 13

quarter second delay to send and return signals (ie lag in telephone communication)

Question 14

global positioning system

Answer 14

GPS, uses MEO satellites to enable users to determine their position anywhere on the earth.

Question 15

radio transmission

Answer 15

radio-frequencies to send data directly between transmitters and receivers.

Question 16

satellite radio

Answer 16

uninterrupted, near CD quality music sent to the radio

Question 17

infrared

Answer 17

a red light not visible to the human eye. Remote controls, CD and DVD players. Uses a transceiver to transmit and receive short distance signals.

Question 18

bluetooth

Answer 18

used to create small personal area networks.

Question 19

Personal Area Network (PAN)

Answer 19

computer network used for communication among computer devices, all located in close proximity.

Question 20

ultra-wideband (UWB)

Answer 20

a high speed wireless technology. Ie streaming movies.

Question 21

near-field communications

Answer 21

embedded in mobile devices and credit cards. The smallest range of all short range wireless networks.

Question 22

list short range wireless networks

Answer 22

Bluetooth, Ultra-wideband, Near-field Communications

Question 23

list medium range wireless networks

Answer 23

Wireless fidelity (WIFI), Wireless mesh networks

Question 24

Wireless Fidelity (WIFI)

Answer 24

medium range WLAN wireless local area network. Basically a LAN without the cables.

Question 25

wireless access point

Answer 25

a transmitter with an antenna connect to a wire LAN that provides internet connection.

Question 26

MiFi

Answer 26

portable wifi, hotspot wherever you go

Question 27

mesh networks

Answer 27

uses multiple wifi access points to create a wide area network.

Question 28

list wide area wireless networks

Answer 28

Cellular radio, wireless broadband or WiMax

Question 29

cells

Answer 29

radio antennas or towers for each geographic region. used for cell phones.

Question 30

Location Based Commerce

Answer 30

(L-commerce) mobile commerce that uses your location

Question 31

telemetry

Answer 31

wireless transmission and receipt of data gathered from remote sensors. Ie if you lose you iphone…

Question 32

Radio Frequency Identification

Answer 32

manufacturers attach tags with antennas and computer chips to goods then tracks their movements through radio signal

Question 33

Wireless Sensor Networks (WSN’s)

Answer 33

interconnected sensors called “motes” placed into the physical environment.

Question 34

Rouge Access Points

Answer 34

unauthorized access point to a wireless network