Chapter 7 It

Front 1

Telecommunication systems

Back 1

enable the transmission of data over public or private networks.

Front 2

Network

Back 2

a communications, data exchange, and resource-sharing system created by linking two or more computers and establishing standards, or protocols, so that they can work together.

Front 3

Local area network (LAN)

Back 3

is designed to connect a group of computers in close proximity to each other such as an office building, a school, or a home.

Front 4

Wide Area network (WAN)

Back 4

spans a large geographic area, such as a state, province, or country

Front 5

metropolitan area network(MAN)

Back 5

a large computer network usually spanning a city

Front 6

Network and telecommunication competitive advantages include:

Back 6

-voice over IP
-networking businesses
-increasing the speed of business
-securing business networks

Front 7

Voice over IP (VoIP)

Back 7

uses TCP/IP technology to transmit voice calls over long-distance telephone lines.

Front 8

Industry-leading companies

Back 8

have developed internet-based products and services to handle many aspects of customer and supplier interactions
-customers now expect seamless retailing between online and in-store

Front 9

Virtual private network (VPN)

Back 9

a way to use the public telecommunication infrastructure(e.g. internet) to provide secure access to an organization's network.

Front 10

Value-added network (VAN)

Back 10

a private network, provided by a third party, for exchanging information through a high capacity connection.

Front 11

Bandwidth

Back 11

is the difference between the highest and the lowest frequencies that can be transmitted on a single medium, and it is a measure of the medium's capacity.

Front 12

Broadband

Back 12

refers to high-speed internet connections transmitting data at speeds greater than 200 kilobytes per second (Kbps)

Front 13

What do wireless transmissions rely onto send data across high frequency radio ranges that later connect to wired media?

Back 13

radio waves, microwaves, and satellites

Front 14

Mobile

Back 14

means the technology can travel with the user, but it is not necessarily in real-time.

Front 15

wireless

Back 15

gives users a live (internet) connection via satellite or radio transmitters

Front 16

how do cell phones work?

Back 16

they work by using radio waves to communicate with radio antennas (or towers) placed within adjacent geographic areas called cells.

Front 17

cell

Back 17

-each cell has a base station that consists of a tower and a small building containing radio equipment.
-each cell is typically sized at 10 square miles.

Front 18

What is the latest trend in cell phones?

Back 18

The convergence of voice, video, and data communications

Front 19

Personal Digital assistants (PDA)

Back 19

are small hand held computers capable of entirely digital communications transmittion.

Front 20

Smartphones

Back 20

combines the functions of a cellular phone and a PDA in a single divice.

Front 21

Bluetooth

Back 21

a telecommunications industry specification that describes how mobile phones, computers, and personal digital assistants can be easily interconnected using a short-range wireless connection.

Front 22

Satellite

Back 22

a big microwave repeater in the sky; it contains one or more transponders that listen to a particular portion of the electromagnetic spectrum, amplifying incoming signals, and retransmitting them back to earth.

Front 23

Microwave Transmitter

Back 23

commonly used to transmit network signals over great distances

Front 24

Location-Based services(LBS)

Back 24

are wireless mobile content services which provide location-specific information to mobile users moving from location to location.

Front 25

Global Positioning system (GPS)

Back 25

is the "constellation" of 24 well-spaced satellites that orbit the earth and make it possible for people with ground receivers to pinpoint their geographic location.
-The location accuracy is anywhere from 100 to 10 meters for most equipment.

Front 26

Geographic information system (GIS)
dealing with GPS

Back 26

is designed to work with information that can be shown on a map.

Front 27

Common GIS uses:

Back 27

finding what is nearby
routing information
information alerts
mapping densities
mapping quantities

Front 28

Wireless fidelity (wi-fi)

Back 28

a means of linking computers using infrared or radio signals.
-The main problem with Wi-Fi access is that hot spots are very small, so coverage is sparse.

Front 29

WiMAX

Back 29

is a telecommunications technology aimed at providing wireless data over long distances in a variety of ways, from point-to-point links to full mobile cellular type access.

Front 30

WiMAX tower

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a single WiMAX tower can provide coverage to very large area-as big as 3000 square miles.

Front 31

WiMAX receiver

Back 31

the receiver and antenna could be built into a laptop the way Wi-Fi access is today.

Front 32

Radio frequency identification (RFID)

Back 32

ues active or passive tags in the form of chips or smart labels that can store unique identifiers and relay this information to electronic readers.

Front 33

RFID tag

Back 33

contains a microchip and an antenna, and typically work by transmitting a serial number via radio waves to an electronic reader, which confirms the identity of a person or object bearing the tag.