The Internet is a global network of interconnected computer networks that use common communication standards to share information. It connects websites, which can be located by their domain name, like www.google.com, or IP address, like 123.23.234.45. Domain names make addresses easier for people to remember than strings of numbers. Information is transmitted on the Internet in packets, which are broken into parts and sent independently, through a process known as packet switching. Routers help direct data traffic by communicating available routes and connecting to other routers, some operating automatically through dynamic routing.

1. Internet
Internet is a global computer network
providing a variety of information and
communication facilities, consisting of
interconnected networks using
standardized communication protocols.

2. Domain name and IP address
 A domain name is the address people type in
to the internet. E.g. www.google.com
 The IP address is the address the computer
uses to direct to the page. This consists of
number. E.g. 123.23.234.45
 The reason for domain names is because it is
easier for people to remember letters and
words rather than numbers
 These are the almost the same because they
both lead to one website

3. Data packets and packet
switching
 A packet is a basic unit of
communication over a digital network
 Packet Switching is a mode of data
transmission in which a message is
broken into a number of parts which are
sent independently

4. Function of Routers
 Routers communicate with each other to
share information about available paths and
directly connected routes
 There are 2 types of routers: Static and
Dynamic
 Static routers require administrators to set
them up manually
 Dynamic routers are designed to discover
routes automatically making them require a
minimal amount of setting up

5. Resources
 http://www.sqa.org.uk/e-learning/
NetTechDC02CD/page_47.htm
 http://voip.about.com/od/glossary/g/PacketDef.ht
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 Google definitions