LIS 505 - Internet


Pieces of messages transmitted over a packet-switched network, each including the destination address.


A precursor to the Internet, created in 1969 by the United States Advanced Projects Research Agency.

World Wide Web

A system of Internet servers that support HTML and related formats. WWW or the Web for short.


A text format that allows for links from parts of a document to other parts of the same document or to other documents.


Software to download and display Web pages.


Adjusting the part of a text or image that is visible in a display horizontally or vertically in relatively small increments.

scroll bars

Bars that appear on the sides or bottoms of windows to allow users to scroll the contents.


Short for Uniform Resource Locators. The commonly used addresses for Web pages. . The more formal term URI (Uniform Resource Identifier) is somewhat broader in scope.


Lists of frequently used documents (especially Web pages). Called bookmarks in Netscape Navigator and favorites in Internet Explorer.


Modules that add special features to larger systems. Plug-ins for browsers typically allow them to display files in additional formats.


A programming language developed by Sun Microsystems. Java programs are compiled into a form that can be run on a variety of platforms.

ActiveX controls

Little pieces of software, created according to a standard developed by Microsoft, which can be downloaded automatically by a Web browser and executed on Windows computers.


Short for Wireless Application Protocol. An informal standard for accessing information via handheld devices.

search engines

On the Internet, software that receives search requests from users and returns lists of Web documents that seem to match.


Programs that fetch documents from the Web and provide information about them for use by search engines. Also called webcrawlers, bots, or robots.


Also called meta search engines. Software that allows searches to be sent to several search engines at once. SearchEngineWatch


Web-based guides to the Web, usually human-compiled, where sites are organized by category. SearchEngineWatch


A worldwide electronic message system that can be accessed through the Internet or online services, normally by running news reader software. It is divided into a large number of newsgroups for different interest areas.

moderated newsgroups

Newsgroups monitored by designated individuals or groups who can block messages deemed inappropriate.


Reading messages on a newsgroup or similar forum without posting.


Posting or sending a message that attacks someone in overly harsh or personal terms.


Guidelines for posting or sending messages on the Internet, covering areas such as civility and appropriate formatting.


Standards for transmitting messages between devices, typically covering such things as error checking, data compression, and how the end of a message is signaled and receipt acknowledged.


Short for Transmission Control Protocol/Internet Protocol. A set of protocols used for messages on the Internet and other networks.


Short for File Transfer Protocol. A protocol used on the Internet for sending files.


Short for HyperText Transfer Protocol. The protocol used by the World Wide Web, defining how messages are formatted and transmitted, and what actions servers and browsers should take in response to commands.


A standard way for software to simulate the behavior of a terminal over a network using TCP/IP. . For greater security, another protocol, SSH (Secure SHell) , has been developed perform similar functions.


Transmission of messages between people over communications networks. Sent messages are stored until recipients request them. Also called electronic mail or email. POP (Post Office Protocol) and IMAP (Internet Mail Access Protocol), are commonly used for downloading messages from servers, and SMTP (Simple Mail Transfer Protocol) for sending messages between servers and from clients to servers.


Patterns through which only data that match (or do not match) are allowed to pass. In e-mail, filters are commonly used to assign messages to different categories, and to delete unwanted messages, automatically.

Last updated August 26, 2003.
This page maintained by Prof. Tim Craven
E-mail (text/plain only):
Faculty of Information and Media Studies
University of Western Ontario,
London, Ontario
Canada, N6A 5B7