1.5 network, topoloy,protocols and layers

1.5 network, topoloy,protocols and layers

1. mesh

   • a local network
   • node
     • a node is either a redistribution point or a communication endpoint
     • the definition of a node depends on the network and protocol layer
     • used in a large network
     • things like computers, phones and printers are nodes
     • a node is anything with an ip address
   • a network where all the work stations are connected

2. layers

3. TCP- Transmission control protocol

4. Key words

   • topology
   • mesh network
     • devices are directly connected to each other
   • star network
     • devices are individual connected with a cable to the server
   • Wifi
   • encryption
   • ethernet
   • ip addressing
     • a unique string of numbers separated by full stops
     • Similar to a postcode that is used to identify a house in a county on a street
   • Mac address
     • Media access control
   • protocols

5. network computers can share hardware,software, data