The Internet. Components of the Internet. The Internet. Definition-A network of networks connecting a vast number of computers from around the world. Internet Protocols Definition- a set of rules that govern the working of the Internet. Examples http Protocol for the WWW
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The Internet Components of the Internet
The Internet Definition-A network of networks connecting a vast number of computers from around the world. Internet Protocols Definition- a set of rules that govern the working of the Internet. Examples http Protocol for the WWW hypertext transfer protocol Rules for the transfer of hypertext files FTP file transfer protocol Rules for transferring large files
The Internet Hardware of the Internet Client Computers Computers generally found in homes Server Computers Computers used to provide services on the Internet Routers / Hubs / Switches Equipment that manages the flow of information around the Internet Wire Fiber Optic Copper Wireless Network device Modem:A Modulator/Demodulator (MoDem)that communicates with the network NIC Card:Network interface card-communicates with the network
Aspects of the Internet • World Wide Web- Hypertext based • Newsgroups (Usenet)- online discussions • File Transfer Protocol-Sharing files on the Internet • eMail-text communication between computers • Telnet-live text based connection to a computer
The Internet http WWW ftp File sharing Usenet Newsgroups eMail Telnet
Aspects of the Internet: World Wide Web • This is commonly referred to as the Internet however the WWW is only part of the Internet. • To access the WWW you must use a browser of some sort. There are many to choose from but the most popular are Netscape and Internet Explorer. • The WWW employs a protocol called http or hypertext transfer protocol.
Aspects of the Internet: Newsgroups • Newsgroups are similar to message boards on the WWW. People are allowed to post messages that discuss a wide range of topics. • A discussion group will typically deal with one specific topic. (ex. Filemaker Pro CDML) • Newsgroups use a portion of the Internet called Usenet.
Aspects of the Internet: File Transfer Protocol • A client/server protocol for exchanging files with a host computer. • Using a client application, a user logs into a server to add files to the server or retrieve files.
Aspects of the Internet: Wide Area Information Services • WAIS is a search engine developed for the Internet. It allows one to search the complete text of a document.
Aspects of the Internet: Gopher • A document retrieval system from the University of Minnesota. Using Gopher, a user can access files from many different computers by looking through hierarchical menus to find specific topics. A document may be text, sound, image, or other type file. • A program called Jughead can be used to search for topics found within Gopher files. Gopher sites can now be accessed through the World Wide Web.
Aspects of the Internet: Telnet • A text based method of connecting to and managing a computer on a network.