1.6 system security

1.6 system security

1. what is internet

   • an collection of inter-connected computer network

2. what is the world wide web

   • a part of the internet that contains webpages and websites

3. how many networks where connected to the internet in 1969

   • four networks

4. how many networks where connected to the internet in 1989

   • 100,000 networks

5. which two devices are needed to connect to the internet

   • modem - connects you your IPS
   • Router - provides access to LAN

6. what is the modem used for

   • it is used to convert the digital signal from the computer
     • used by telephones lines and the modem at the recieving ends
       • converts the signal back to digital

7. what is the router and what is it used for

   • allows you to connect to several computers and other devices to a single internet connection

8. what must all transmissions follow in order for the transmission to be successful

   • a set of rules

9. what are the rules clalled

   • the set of rules is called a protocol