Programming Course - The Internet and WWW (1)

The Internet and WWW

The Internet:

Hardware: Physical connection between different computers
Software (TCP/IP): Allows communication between the computers.
Network: Once connected to one point on the net, can potentially access the entire net.

Internet scheme.

Communication Types on the Internet

E-mail: Send and receive messages.
Telnet: Login to one computer from another one.
FTP (File Transfer Protocol): Copy a file from one computer to another.
HTTP (HyperText Transport Protocol): Retrieve hypertext files present in special repositories on other computers.

Hypertext Files and The World Wide Web

Hypertext Files: Text containing links to other documents (e.g. hypertexts, graphics, sound etc.), in the form of highlighted keywords.
The World Wide Web (WWW): The collection of all hypertext and hypermedia resources on the Internet.

Client Programs

For E-mail:	Eudora, MS Mail (PC, Mac), elm, pico (Unix)
For FTP:	Fetch (Mac), CuteFTP (PC), FTP (Unix)
For HTTP:	Web Browsers (Netscape, Internet Explorer).

Today, Web browsers can perform all of the above.

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