1. HOW THE INTERNET WORKS

2. NOTES (DNEWS) Interconnected network of computers – The Internet Servers - hosts They store websites and transfer data to clients Millions host nodes across the planet – Individuals, Companies, Governments No single entity owns the internet

3. NOTES (DNEWS) Wired directly Modem has unique IP Address Connected via cable or DSL to another modem at the internet service provider LSP has local connection points – Windowless climate-controlled buildings filled with computers (Point of Presence) ISP modems are networked together with fibre optic cable to a network access point Another node All come together to connect – Enlarge Network – Internet Backbone Trunk cables on the floor of the world’s ocean – Alight with data – Speed of light

4. NOTES (DNEWS) Type a site Text translated into packet Packet sent to ISP Routes packets somewhere else in the system Data can split and travel to the same place DNS finds out what the site’s IP address is Data goes through POP & Nap Access site computers – Site takes over and pulls data from own computers

5. WHAT WE MIGHT NEED TO CONNECT TO THE INTERNET USB Broadband Modem ADSL Modem/Router DSL/Cable Modem Ethernet ISP Router

6. INTERNET CONNECTION METHODS Wireless - Wireless-enabled devices use this to connect to the internet. There are no wires required to connect, as the name suggests. Broadband - Wired connection to a broadband supplier. Usually through a network card in the computer, though Cable users have an Ethernet connection. Dial-Up - Wired connection via telephone line which requires a modem.