The Internet and the World Wide Web

When two or more networks are joined together they are called an internetwork or internet with a lowercase i.

Packet Switching
The technique of breaking a message into individual packets, sending the packets along the best route available, and reassembling the data is called packet switching. The software used for packet switching on the Internet is a communications protocol named TCP/IP (transmission control protocol/Internet protocol).


Regional host computers are connected to the major networks that carry most of the Internet communications traffic by high-speed communications lines called backbones. Backbones are like highways that connect major cities across the country.


Is short for Internet service provider; it's an organization that has a permanent connection to the Internet and provides temporary connections to others for a fee. Local ISPs connect to regional host computers operated by national Internet service providers.

IP Address

It works like the postal service, the internet relies on an addressing system to send data to its destination. Each location on the Internet has four-part numeric address called an IP (Internet protocol) address. The first part of the IP address identifies the geographic region, the second part the company or organization, the third part the computer group, and the fourth and last part, the specific computer.

Domain Name

the Internet supports the use of a text name that can be substituted for the IP address. The text version of the IP address is called a domain name.

Target Hyperlink

One of the three types of hyperlinks is the Target hyperlinks which moves from one location in a document to another location in the same document

Relative Hyperlinks

These hyperlinks move from one document to another document on the same Internet computer.

Absolute Hyperlinks

Move to another document on a different Internet computer.


Run multimedia within the browser window. Can be downloaded from many sites on the Web. Links to these sites often are found with Web multimedia applications

Helper Application

Run multimedia in a window separate from the browsers. Can be downloaded from many sites on the Web. Links to these sites often are found with Web multimedia applications


Can be downloaded and run in your browser window, can be used by any type of computer and are relatively safe from viruses and other tampering.

Streaming Video

Allows you to view longer or live video images as they are download to your computer. It also allows you to conduct Internet videoconferences similarly to Internet audioconferences.

Search engine

A search tool to help you find information on specific topics. It is a software program that finds Web sites, Web pages , and Internet files that match one or more keywords that you enter. Some search tools look for simple word matches and other allow for more specific searches on a series of words or an entire phrase. An example of search tool is "Yahoo!"


Many organization have applied Web technology to their own internal networks. Internal networks that use Internet and Web technology are called Intranets.


Private networks that include more than one organization.


A general term that refers to both hardware and software used to restrict access to data on a network. Firewalls are used to deny network access to outsiders and to restrict employees' access to sensitive data such as payroll or personnel records.

Proxy server

A common way to implement a firewall is to place a computer called a proxy server between two separate networks. It might separate an organization's's internal network from an internet network used to share data with remote locations.


Involves storing a copy of each Web page that is accessed in local storage. Retrieving a page from cache is faster than retrieving a page from its original Web location.

Anonymous FTP

FTP stands for file transfer protocol, it's an Internet standard that allows you to exchange files with other computers on the Internet. Some FTP sites limit file transfers to persons who have authorized accounts on the computer. Many FTP computers, however, allow anonymous FTP, whereby anyone can log in and transfer some, if not all, available files.

Archie gateway

A Web page that provides an easy to use interface to the Archie search function.


A menu-driven program that helps you locate and retrieve files on the Internet. Gopher originally was developed at the University of Minnesota and is named after the school mascot, the Golden Gopher.


A search programs that search Gopher directories for files on a Jughead specific subject. It is offered in the Gopher servers.


An internet protocol that enables you to log into a remote computer on the Internet. Can use the remote computer as if you had a direct, local connection.


A collection of news and discussion groups, called newsgroups, that are accessed via the Internet. Each of the more than 6,000 newsgroups operates as if it were a bulletin board devoted to a particular subject.


The original article and all subsequent related replies are called a thread in the newsgroups.


Some newsgroups are supervised by a moderator, who reads each article before it is posted to the newsgroup. If the moderator thinks an article is appropriate for the newsgroup, the moderator posts the article for all members to read.


Over time, newsgroup members have developed certain guidelines for posting articles called netiquette (short for network etiquette). These guidelines are also appropriate for other communications such as e-mail.

Channel (IRC)

Allows you to join others in real time conversations on the Internet. You must connect to an Internet server using an IRC client program to start an IRC session. You then can create or join a conversation group called a channel on the Internet server to which you are attached. The channel name should indicate the topic of discussion.

Information appliance

A network computer for the home, sometimes called an information appliance, is a device that incorporates Internet access into a device with which you are familiar already, such as a television, a telephone, or a video game console.

What makes up an e-mail address

A combination of a user name and the domain name that identifies the location of the mailbox computer. Your user name, or user-ID, is a unique combination of characters that identifies you. It must be different from the other user names located on the same mailbox computer. Sometimes it's limited to eight characters and often is combination of your first and last names, such as the initial of your first name plus your last name.

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