Internet

The Internet

The internet is an extremely useful tool for gathering information about things, and people from all over the world. The internet started with ARPANET, a department of defense idea using just 4 computers. ARPANET was quickly burdened and was replaced in 1990 by NSFNET. Soon after that a policing organization was needed to regulate all of this electronic data and the INTERNIC was born. INTERNIC provides the administration of ip numbers, domain names, and general organization of licensing and evolvement.IP Numbers are unique numbers in the world based on 4-octet's xxx.xxx.xxx.xxx starting from most general on the left to most specific.in order to manage IP addressing each domain controller must do its own administration. Domain controllers use Net Masks A Net Mask allows a group of IP Number to be routed to a general stopping point referred to as a domain controller. They do this by using binary "anding" of ip octets. URL or your address, allows easier remembrance of IP numbers www.bsc.nodak.edu = 165.234.63.3 URL's are translated into IP numbers using a DNS server DNS= Domain Name Service We create documents on the WWW with a language call HTML HTML - Hyper Text Markup Language HTML - is a scripting language HTML documents are transported on a protocol (a language of speaking to other computers) called IP (internet protocol). The type of server (usually called a web server) is sometimes reffered to as HTTP server. HTTP= Hyper Text Transfer Protocol There are many other types of servers that transmit across the internet.

Server examples
FTP	file transfer protocol
NEWS	used by USENET newsgroups
TELNET	remote login to other computers
GOPHER	like FTP but also text based documents
URL's are also broken into categories	.com (commercial organization)
	.edu (educational)
	.net (networking organization)
	.gov (government )
	.org (nonprofit)

HTML BASICS

HTML is translated into pictures by your browser.

Netscape
Internet Explorer
Lynx
Mosiac

There are many differences between browsers even though there is only one HTML language. Because of this the HTML language is always being updated to accommodate features of the new browsers. Browsers are also starting to build off of the HTML language by using other High Level Scripting languages.

VBSCRIPT-used by IE
JAVASCRIPT- used by Netscape

Browsers translate or process HTML documents they do not execute HTML documents. HTML documents are text based and can be read.