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Part 2
vacabulary
36
Other
Undergraduate 3
03/21/2012

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Cards

Term
network interface card(NIC)
Definition
each computer on the network contains this network interface device.
Term
Network operating system (NOS)
Definition
routes and manages communications on the network and coordinates network resources.
Term
Hubs
Definition
connect network components, sending a packet of data to all other connected devices
Term
Switch
Definition
filters and forwards data to a specified destination on the network
Term
router
Definition
is a communication processor used to route packets through different networks, ensuring that the data sent gets to the correct address
Term
Transmission Control Protocol/Internet Protocol (TCP/IP)
Definition
single common, worldwide standard.Transmits data
Term
modem
Definition
converts digital signals into analog signals that can be sent over (or received from) telephone lines, cable lines, or wireless media tht uses analog signals
Term
Local area network (LAN)
Definition
connects personal computers and other digital devices withing a half-mile or 500 meter radius
Term
peer to peer network
Definition
can exhange data by direct access and can share peripheral devices without going through a seperate server
Term
topology
Definition
the way their 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 segment
Term
Wide area networks (WANs)
Definition
span broad geographical distances-entire regions, states, continents, or the entire globe. Most univeral and powerful WAN is the internet
Term
Metropolitan- area network (MAN)
Definition
Is a network that spans a metropolitan area, usually a city and its major suburbs.
Term
Twisted Wire
Definition
consists of strands of copper wire twisted in pairs and is an older type of transmission medium.
Term
Coaxial cable
Definition
consists of thickly insulated copper wire, which can transmit a larger volume of data than a twisted wire
Term
Fiber-optic cable
Definition
consists of bound strands of clear glass fiber, each the thickness of a human hair. Data is transformed into pulses of light
Term
Microwave
Definition
transmit high- frequency radio signals through the atmosphere and are widely used for high-volume, long distance, point- to point communication
Term
hertz
Definition
measurement of the number of cycles per second that can be sent through that medium
Term
Internet Service Provider(ISP)
Definition
is a commercial organization with a permanent connection to the Internet that sells temporary connections to retail subscribers.
Term
Digital subscriber line (DSL)
Definition
operate over existing telephone lines to carry voice, data, and video at transmission rates ranging from 385 kbps all the way to 9 Mbps
Term
Cable Internet connections
Definition
use digital cable coaxial lines to deliver high-speed Internet access to homes and businesses.they can preform high speed up to 10bpms
Term
T1 lines
Definition
offer guaranteed delivery at 1.54 Mbps
Term
Domain Name System (DNS)
Definition
convers IP addresses to domain names.
Term
Internet2
Definition
are consortia representing 200 universaties, private businesses, and government agencies in the United States that are working on a new, robust, high-bandwidth version of the Internet
Term
Unified communications
Definition
integrates disparate channels for voice communications, data communications, instant messaging, e-mail, and elctronic conferencing into a single experience where users can seamlessly switch back and forth between different communication modes.
Term
A virtual private network (VPN)
Definition
is a secure encrypted, private network that has been configured within a public network to take advantage of the economies of scale and management facilities of large networks, such as the internet
Term
Hypertext Transfer Protocol(HTTP)
Definition
is the communications standard used to transfer pages on the WEB
Term
Uniform resource locator(URL)
Definition
directory path and document name. tells the browser software exactly where to look for the information
Term
Search Engine Optimization (SEO)
Definition
is the process of improving the quality and volume of web traffic to a website employing a series of techniques that help a website achieve a higher ranking
Term
intelligent Agent Shopping Bots
Definition
Describes the capabilities of software agents with built-in intelligence that can gather or filter information and perform the other tasks to assist users.
Term
shopping bots
Definition
use intelligent agent software for searching the Internet for shopping information.
Term
Web 2.0
Definition
interactivity, real-time user control, social participation(sharing), and user- generated content.
Term
Rich site summary (RSS)
Definition
syndicates Web site content so that it can be used in another seting.
Term
Radio frequency identification(RFID)
Definition
systems provide a powerful technology for tracking the movement of goods throughout the supply chain.
Term
Wireless Sensor Networks (WSN)
Definition
are networks of interconnected wireless devices that are embedded into the physical environment to provide measurements of many points over large spaces.
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