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MIS - Chapter 7
Telecommunications, the internet and wireless technology.
56
Management
Undergraduate 3
10/29/2010

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Term
broadband
Definition
connections provided by telephone and cable tv companies, 1 million bits per second
Term
Network Interface Card
Definition
contained within most modern computers; many have built already into mother-board
Term
Network Operating System
Definition
routes and manages communications on the network and coordinates resources.

Windows Server, Linux, Novell NetWare
Term
Hubs
Definition
devices that connect network components sending packets of data to other connected devices
Term
Switch
Definition
more intelligent then a hub; filter and forward data to a specified destination
Term
Router
Definition
special communications processor used to route packets of data through different networks
Term
Client/Server Computing
Definition
distributed computing model; processing power located within clients, desktops, laptops, hand held devices
Term
Packet Switching
Definition
method of slicing digital messages into parcels called packets; sending along different paths as they become available
Term
TCP/IP
Definition
transmission control protocol/internet protocal
Term
TCP
Definition
establishes a connection between computers, sequences the transfer of packets, and acknowledges packets sent
Term
IP
Definition
responsible for the delivery of packets including disassembling and reassembling.
Term
Application Layer
Definition
enables client application programs to access the other layers; defines protocols that applications use to exchange data.
Term
Transport Layer
Definition
responsible for providing application layer with communication and packet services
Term
Internet Layer
Definition
responsible for addressing, routing and packaging data packers called IP datagrams.
Term
Network Interface Layer
Definition
responsible for placing packets on and receiving them from the network medium
Term
Digital Signal
Definition
discrete, binary waveform
Term
Analog Signal
Definition
continuous waveform passing through a communications medium
Term
Local Area Network
Definition
Half mile to 500 meter radius; links all computers in one building
Term
Campus Area Network
Definition
up to 1000 meters; college campus or corporate facility
Term
Metropolitan Area Network
Definition
City or metropolitan area
Term
Wide Area Network
Definition
transborder or global area
Term
Topology
Definition
description of LAN in terms of the way components are connected together
Term
Star topology
Definition
all devices on the network connect to a single hub
Term
Bus Topology
Definition
one station transmits signals which travel in both directions along a single transmission agent
Term
Ring Topology
Definition
connects network components in a closed loop
Term
Metropolitan Area Network
Definition
network spanning metropolitan area; between WAN and LAN
Term
Twisted Wire
Definition
strands of copper wire twisted in pairs 1gbps
Term
Coaxial Cable
Definition
thickly insulated copper wire; larger transmission volume than twisted wire
Term
Fiber Optic Cable
Definition
bound strands of clear glass fiber as thick as a human hair. Data are transformed into pulses of light
Term
Microwave Systems
Definition
terrestrial and celestial, transmit high-frequency radio signals through the atmosphere and are used for high volume, long distance, point to point communication
Term
Internet Service Provider
Definition
commercial organization with a permanent connection to the internet; sell temporary connections to retail subscribers
Term
Digital Subscriber Line
Definition
operate over existing telephone lines
Term
Cable Internet Connections
Definition
digital cable coaxial lines to deliver internet access to homes and businesses
Term
Internet Protocol Address
Definition
32 bit number represented by four strings of numbers ranging from 0 to 255
Term
Domain Name System
Definition
converts IP addresses to to domain names
Term
Domain Name
Definition
English like name that corresponds to the unique 32-bit IP address
Term
Top Level Domain
Definition
edu
com
ca
org
net
Term
Internet Root Domain
Definition
the "." in address bar
Term
Second-Level Domains
Definition
aircanada, coogle, pearsoned
Term
Third-Level Domain
Definition
Hosts, particular sections

ie: sales.google.com
Term
File Transfer Protocol
Definition
transferring files from computer to computer
Term
Telnet
Definition
Logging on to one computer system and doing work as though the user was working on a distant computer
Term
Voice over IP
Definition
(VoIP) delivers voice information in digital form using packet switching
Term
Unified Communications
Definition
merging disparate communications modes into a single, universally accessible service
Term
Virtual Private Network
Definition
secure, encrypted, private network that has provides firms with secure and encrypted communications at a lower cost
Term
Hypertext Transfer Protocol
Definition
communications standard used to transfer pages on the web. allows computer to request web pages stored on an internet host.
Term
Uniform Resource Locator
Definition
the directory path and document name collectively. Tells the browser software where to look for the information.
Term
Semantic web
Definition
refers to meaning; most of web content is designed for humans to read; computer can discover term in web document but do not really understand the meaning.
Term
Personal Digital Assistants
Definition
small, hand held computers featuring applications such as schedulers, address books, etc.
Term
Smartphones
Definition
PDA's with email, wireless access to internet, voice communication
Term
3G Networks
Definition
more powerful cellular network; transmission from 144kbps or 2mbps
Term
Radio Frequency Identification
Definition
tiny tags embedded with microchips containing data about an item; transmits radio signals to RFID readers.
Term
Components of a Computer Network
Definition
Network Interface Card
Network Operating System
Dedicated Server Computer
Hubs
Routers
Term
Layers of TCP/IP Networking
Definition
Application Layer (HTTP)
Transport Layer (TCP)
Internet (IP)
Network Interface Layer
Term
Types of Networks (4)
Definition
Local Area Network (500m)
Campus Area Network (1000m)
Metropolitan Area Network (City/Metro area)
Wide Area Network (transcontinental or global)
Term
Types of RFID
Definition
Active
Passive
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