Web has enabled us to gain and share knowledge in many different ways. We have already seen how the concept of URL and domain name works. The working of email was also covered in the previous post. Now, in this article let’s have a look at some other basic extensions of the world wide web.
File Transfer Protocol (FTP)
FTP is used to transfer files to and from a remote site and may also be used to delete and rename files, or create, delete and rename directories at the remote site. FTP is commonly used to download files such as documents or programs over the Internet and also to transfer files to and from a web site to update or construct the site.
Simple FTP file downloads may be handled by a browser, while a separate FTP program such as WS_FTP (more at Tucows) is used when constructing directories for a web site and transferring files to and from the site.
Newsgroups such as Usenet are world-wide distributed discussion forums. Newsgroups allow articles or messages to be posted, which are then broadcast to other interconnected computer systems. Anyone (with appropriate software) can post & read news messages. News groups have been extended in functionality by message boards and web boards.
Web Board or Message Board
These are an extension of newsgroups that provide an interactive environment for on-line forums through the addition of a graphic user interface. They may also provide real time chat and an interface to E-mail. They are usually controlled by a manager and require registration and password identification to participate
Web boards and message board are becoming widely used in education and business areas for conferencing or discussion groups. The terms Web board and message board are sometimes used interchangeably however they commonly defined according to the following features
- Generally non frame page that use form components (buttons, text boxes) to post messages.
- Use frames and menu’s
- Include chat facilities
- Include e-mail management facilities
- Require JAVA capable browser
Telnet provides the facilities to allow a remote computer to appear as a terminal on a remote network. This system uses a text based interface and allows the user to work at the UNIX command line. The user may remotely manipulate files and directories or run text mode programs on the server.
Other Web Services
- IRC (Internet Relay Chat)
- Internet Phone
- Video conferencing
- Gopher and WAIS
- text based information retrieval systems used extensively before the World Wide Web