ISM 3013 Ch. 7

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Terms in this set (...)

local area network LAN
connects a group of computers in close proximity, such as in an office building, school or home
wide area network WAN
spans a large geographic area such as a state, province, or country
metropolitan area network MAN
a large computer network usually spanning a city
national service providers NSPs
private companies that own and maintain the worldwide backbone that supports the internet
network access points NAPs
traffic exchange points in the routing hierarchy of the internet that connects NSPs
regional service providers RSPs
offer internet service by connecting to NSPs, but they also can connect directly to each other
bandwidth
the maximum amount of data that can pass from one point to another in a unit of time
bit
short for binary digit, it is the smallest element of data and has a value of either 0 or 1.
bit rate
or data rate, the number of bits transferred or received per unit of time. what bandwidth is measured in
modem
a device that enables a computer to transmit and receive data
broadband
a high-speed internet connection that is always connected
digital subscriber line DSL
allows high-speed digital data transmission over standard telephone lines
internet cable connections
provide internet access using a cable television company's infrastructure and a special cable modem.
T1 lines
a type of data connection able to transmit a digital signal at 1.544 mpbs
protocol
a standard that specifies the format of data as well as the rules to be following during transmission
transmission control protocol / internet protocol. TCP / IP
provides the technical foundation for the public internet as well as for large numbers of private networks
domain name system DNS
converts IP addresses into domains, or identifying labels that use a variety of recognizable naming connections
network convergence
the efficient coexistence of telephone, video, and data communication within a single network, offering convenience and flexibility not possible with separate infrastructures
unified communications UC
the integration of communication channels into a single service
Voice over IP
uses IP technology to transmit telephone calls
peer-to-peer p2p
a computer network that relies on the computing power and bandwidth of the participants in the network rather than a centralized server
internet protocol IPTV
distributes digital video content using IP across the Internet and private IP networks
intranet
a restricted network that relies on internet technologies to provide an Internet - environment within the company for information sharing, communications, collaboration, web publishing, and the support of business processes
extranet
an extension of an intranet that is available only to authorized outsiders, sch as customers, partners, and suppliers
virtual private network VPN
direct private network links among themselves or create private, secure internet access, in effect a 'private tunnel' within the internet
secure sockets layer SSL
a standard security technology for establishing an encrypted link between a web server and a browser, ensuring that all data passed between them remain private.
SSL certificate
an electronic document that confirms the identity of a website or server and verifies that a public key belongs to a trustworthy individual or company
Secure hypertext transfer protocol
a combination of HTTP and SSL to provide encryption and secure identification of an internet server
digital divide
a worldwide gap giving advantage to those with access to technology
personal area networks PANs
provide communication over a short distance that in intended for use with devices that are owned and operated by a single user
bluetooth
a wireless PAN technology that transmits signals over short distances among cell phones, computers, and other devices
wireless LAN
a local area network that uses radio signals to transmit and receive data over distances of a few hundred feet
wireless fidelity
wi-fi a means by which portable devices can connect wirelessly to a local area network, using access points that send and receive data via radio waves
802.11
a set of standards carrying out wireless local area network communication
wireless MAN
a metropolitan area netowrk that uses radio signals to transmit and receive data
Worldwide Interoperability for microwave access
a communication technology aimed at providing high-speed wireless data over metropolitan are networks
wireless WAN
a wide area network that uses radio signals to transmit and receive data. divided between cellular communication systems and satellite communication systems
smart phones
offer more advanced computing ability and connectivity that basic cell phones
3G
services that bring wireless broadband to mobile phones
streaming
a method of sending audio and video files over the internet in such a way that the user can view the file while it is being transferred
satellite
a space station that orbits the Earth receiving and transmitting signals from earth based stations over a wide are
radio-frequency identification RFID
uses electronic tags and labels to identify objects wirelessly over short distances
global positioning system GPS
a satellite based navigation system providing extremely accurate position, time, and speed, information
geographic information system GIS
consists of hardware, software, and data that provide location information for display on a multidimensional map
location-based services
applications that use location information to provide a service
wi-fi protected access
a wireless security protocol to protect wi-fi networks