Introduction to the Internet Technology Mrs. Huddleston

The Internet: A Definition Internet—structure made up of millions of interconnected computers world wide whose users can communicate with each other and share information. Huddleston - Introduction to the Internet

Physical Structure of the Internet Computers Servers Routers Satellites Fiber-optic cables Phone lines Other telecommunications media Huddleston - Introduction to the Internet

Utilizations of the Internet World Wide Web—a system of interlinked documents, called hypertext, accessible via the Internet. Telnet—remotely logging on to another computer. FTP (File Transfer Protocol)—transferring files from one computer to another. Email—electronic mail Usenet—collection of discussion forums called newsgroups. (Chatrooms, message boards, blogs) IM, Skype Huddleston - Introduction to the Internet

Huddleston - Introduction to the Internet Internet Vocabulary Web Server—computer which stores the Web documents (pages, images, videos, etc.) that users access. Web Browser—software program that access the Web document on a server, interprets the HTML and displays its contents on the user’s computer. (Firefox, Explorer, Chrome) Huddleston - Introduction to the Internet

More Internet Vocabulary ISP (Internet Service Provider)—business who gives you access to the Internet. (AOL, AT&T, Comcast) IP Address—(Internet Protocol) a numerical identification assigned to any device on a network. Huddleston - Introduction to the Internet

Types of Internet Connections Modem/Dial-Up connection Broadband Cable DSL (Digital Subscriber Line) Satellite Broadband ISDN (Integrated Services Digital Network) T1/T3 Fiber Wireless (Wi-Fi) WiMAX (Worldwide Interoperability for Microwave Access) Huddleston - Introduction to the Internet

Modem/Dial-Up connection Run over normal telephone lines While online, your phone is unavailable for calls Can be external or internal Speed: 14-56 kbs Usually the slowest and cheapest connection Huddleston - Introduction to the Internet

Huddleston - Introduction to the Internet Broadband Cable Connects through your cable TV line Connected all the time, and it doesn't tie up your phone line. Speed: 512 kbs – 20 mbs Huddleston - Introduction to the Internet

Huddleston - Introduction to the Internet DSL Operates over normal telephone lines and can be used simultaneously with the telephone Speed: 640 kbs – 9 mbs, depending on type of DSL and how far you are from the nearest telephone station Huddleston - Introduction to the Internet

Huddleston - Introduction to the Internet Satellite Broadband Two-way satellite broadband service transmits high-speed data via satellite to a dish antenna at your house. Speed: 492-512 kbs Huddleston - Introduction to the Internet

Huddleston - Introduction to the Internet ISDN Fewer errors in transmission A single ISDN line can handle up to eight devices, including a PC, telephone, fax, and video, and you can have any two devices operating simultaneously Operates over standard telephone wires and fiber optic circuits, meaning it's readily available Speed: 128 kbs – 9 mbs Huddleston - Introduction to the Internet

Huddleston - Introduction to the Internet T1/T3 The T-carrier system is a direct link to the Internet. Very expensive and very fast Speed: 1.5 – 54 mbs Huddleston - Introduction to the Internet

Huddleston - Introduction to the Internet Wireless (Wi-Fi) Speed: 2 – 54 mbs Range: up to a few hundred yards Huddleston - Introduction to the Internet

Huddleston - Introduction to the Internet WiMAX Improvement on today’s Wi-Fi wireless Transmits large amounts of digital bits via radio signals Economical alternative to cable and telephone lines Range: up to 30 miles Speed: 50x as fast as Wi-Fi Huddleston - Introduction to the Internet

Huddleston - Introduction to the Internet