Internet

  • packet = a small amount of data sent over a network (each packet includes source and destination of information)
  • computer system = group of computing devices and programs working together for a joint purpose
  • computer network = group of interconnected computing devices capable of sending or receiving data -packet comtains data and meta data containung info used for routing info

Packet Switching

  • message (file) is broken uo into packets and sent in any order. The packets are reassembled by the recipient’s device
  • routing = process of finding a path from sender to reciever
  • path between 2 comuting devices on a computer network = sequence of directly connected computing devices that begins at the sender and ends at the receiver
  • Bandwidth = maximum amount of data that can be sent in a fixed amount of time on a computer network (typically measured in bits per second)

Layers to Internet

  • Network Access Layer
  • Network Access/Internet Layer Data Transmission (IP address)
  • Internet Layer (internet is scalable)
  • Transport Layer

The Saclibility of the Internet

  • Autonomous Systems (AS)
  • Local Area Network (LAN)

  • The Internet

  • World Wide Web is NOT the internet (linked data pages)

This is my diagram showing computer systems and networks