A browser lets you link to other resources on the Internet using different types
of services. The most common ones are:
I understand the services. What about the anchor tag?
- Uses the HyperText Transfer Protocol to access a World Wide Web server. For
connects to the NASA home page.
- Gopher is software which follows a simple protocol for tunneling through TCP/IP.
It is a distributed document search and retrieval system based on a client/server
model. It was invented at the University of Minnesota. For
gopher://gopher.tc.umn.edu connects you to the Gopher
at the University of Minnesota.
- Uses the File Transfer Protocol to access an FTP Server. FTP is used to
transfer files and it can be done anonymously. Versions of the File Transfer
Protocol have been around since 1971. For example:
connects you to the FTP Server of the Food and Drug Administration.
- This allows the reader to send electronic mail to the electronic mail address
specified. It is often used with the <ADDRESS> tag to allow the reader to
quickly send mail to the author of a document. For
mailto:firstname.lastname@example.org would send electronic
mail to email@example.com
- Uses the Network News Transport Protocol to access an NNTP (Usenet News) Server.
It is the browser that determines which NNTP server to use. The format of the
NEWS URL is different. For example:
news:rec.humor allows the reader
to access the newsgroup rec.humor.
- The purpose of the Telnet protocol is to provide a fairly general, bi-directional,
eight-bit byte oriented communications facility. Its primary goal is to allow a
standard method of interfacing terminal devices and terminal-oriented processes to
each other. It is mostly used to login to a host on the Internet. For
telnet://cyber.gate.net will create a TELNET session for
you to login on CyberGate, an Internet Service Provider.