HCW - Part 7 How the Internet Works
Terms in this set (45)
ADSL (Asymmetric Digital Subscriber Line)
Modems attached to twisted pair copper wiring that transmit from 1.5 Mbps to 9 Mbps downstream (to the subscriber) and from 16 Kbps to 800 Kbps upstream, depending on line distance.
A signal that can take on any value in a range.
Provides different data rates in upstream and downstream directions, where upstream is the direction from the end-user to the network, and downstream is the direction from the network to the user.
The capacity of a channel to carry information.
A device that connects to a local area network to another local area network that uses the same protocol.
A term for high-speed, high-capacity internet and data connections.
A PC program that displays information from the internet.
The highest speed internet or network routes, off which branch regional and local networks that make up the body of the internet.
A transmission path between two points.
A computer of software that depends on another computer - a server - for data, other programs, or the processing of data.
A network in which crucial files are spread across several servers.
A group of computers on a network that are administered as a unit, usually by the same company or organization.
Refers to "host to end-user" direction
Digital Subscriber Line technology provides a dedicated digital circuit between a residence and a telephone company.
Dynamic IP Addressing
An IP address is assigned to the customer for the current session or some other ISP-specified amount of time.
Electronic mail sent within a network or over the internet.
A security device that controls access from the internet to a local network
Hardware and software that link two networks that work differently .
File extension for graphics interchange format; a compressed, bitmapped graphics format often used on the web to animate graphic.
Hypertext Markup Language; the coding used to control the look of documents on the Web.
Part of a URL that identifies the location as one that uses HTML
A device where various computers on a network or networks on the internet connect.
A worldwide network with more than 100 million users that are linked for an exchange of data, news, conversation, and commerce.
IP (Internet Provider)
A computer system that provides access to the internet.
An identifier for a computer or device on a TCP/IP network.
Text of graphics on a web page that lead you to other pages if you click on them.
Local Area Network (LAN)
A more or less self-contained network, usually in a single office or building.
Network Interface Card (NIC)
A expansion board that allows a PC to connect to a network.
A network in which there is no central server.
Plain Old Telephone System, basic analog telephone service with no frills from digital technology.
A device that routes data between networks using IP addressing.
A program that searches documents located on the internet for key words or phrases entered by a person browsing the Net.
Part of a network that supplies files and services to clients.
Electronic junk mail
Programs used by search engines to prowl the web looking for new or changed pages.
Static IP Address
An assigned IP address used to connect to the internet.
A device that provides communication channels among end-users.
A point-to-point digital communications circuit with 25 channels, each of which carries 64,000 bits a second.
Transmission Control Protocol/Internet Protocol; Actually a collection of methods used to connect servers on the internet and to exchange data.
Uniform Resource Locator; A web address expressed in English that takes a browser directly to a specific web page.
The world's largest system of on-going online discussions by people who consult news groups.
A group of World Wide Web pages, including a home page with links that leas to other pages at that site or other sites.
Wide Area Network
A single network that extends beyond the boundaries of one office or building.
A virus that doesn't infect other programs.
Extensible Markup Language; An advanced form of HTML, in which data is defined rather than simply formatted.