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Online Glossary

internet primer
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    Two commonly used meanings:

    1. "Point of Presence" is a city or location where a user can connect to a network.
    2. "Post Office Protocol" refers to an interconnection scheme between a client trying to retrieve mail from a server.


    1) First, a place where information goes into or out of a computer, or both. E.G. the serial port on a personal computer where a modem is installed.

    2) On the Internet, "port" often refers to a number that is part of a URL, appearing after a colon (:) right after the domain name. Every service on an Internet server "listens" on a particular port number for data requests. Part of the TCP/IP protocol. Most services have standard port numbers: web servers normally listen on port 80. Services can also listen on non-standard ports, in which case the port number must be specified in a URL when accessing the server, so you might see a URL of the form:


    which shows a gopher server running on a non-standard port (standard gopher port is 70).

    3) Finally, "port" also refers to translating a piece of software to bring it from one type of computer system to another, e.g. to translate a Windows program to run on a Mac.


    Point to Point Protocol: Protocol that allows a computer to use a regular telephone line and a modem to make a TCP/IP connection. The user is then assigned the IP address of the modem which answers the analog call.


    Quicktime is a file format developed by Apple Computer for storing video on in digital format. Files stored in quicktime format usually have a .mov or .mpg extension. Other popular formats include MPEG and AVI.


    Secure Socket Layer - A protocol developed by Netscape for transmitting private documents via the Internet. SSL works by using a private key to encrypt data that's transferred over the SSL connection. Both Netscape Navigator and Internet Explorer support SSL, and many Web sites use the protocol to secure confidential user information, such as credit card numbers. Web pages that require an SSL connection start with https instead of http.

Search Engine

    Consists of a spider, bot or crawler, that finds URL's either automatically. The search engine makes the determination as to what data ends up in the database. In short, given a url, an automated process occurs which results in your site being included into the results. Search engine spiders are active 24hours a day crawling all the websites on the internet. Most search engines do not charge for this service.

Search Index / Directory

    A manual entry database system. You, as the end user submitting your url, will supply the directory with all of the needed information during the submission process: url, title and a short summary. Directories do not automatically visit your website, and many require payment for inclusion.


    A computer, or a software package, that provides a specific kind of service to client software running on other computers. The term can refer to a particular piece of software, such as a WWW server, or to the machine on which the software is running. One of the simplest types of server is a file server. This is a machine which is a central repository for peoples files on a LAN.


    Search Engine Optimization, or the placement of web pages in search engines. Commonly used to describe firms that offer services that change the content of websites to rank favorably in the major search engines.


    Search Engine Marketing and achieving good results from strategic placement in search engines. Can include paid marketing campaigns such as Google AdWords.


    Shareware is software that you can download and try for free, but are intended to register and send the developer the nominal usage fees.


    A leased-line connection with a data rate of 1,544,000 bits-per-second. A T-1 carries 24 56kbps circuits plus some timing and signaling information.


    Leased-line connection capable of carrying data at 44,736,000 bits-per-second. Equivalent to 28 T-1 circuits.

Top Level Domain refers to the domain name extension. Examples of TLD's are .com, .net, .org, .mil, .edu and .gov


    Uniform Resource Locator: The standard way to give the address of any resource on the Internet that is part of the World Wide Web (WWW). Originally titled URI, Uniform Resource Identifier. A URL looks like this:



    World Wide Web: Two meanings - First, loosely used: the whole constellation of resources that can be accessed using any internet protocol such as http or ftp. Second, the universe of hypertext servers (HTTP servers) which are the servers that allow text, graphics, sound files, etc. to be mixed together.

internet primer
TOP mistakes
glossary1 2 3 | color chart


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