Unit 5

Unit 5

1. LAN

   • Local Area Network - confined to one location or organisation, its resources are only accessible by computers connected to that LAN

2. WAN

   • Wide Area Network - is a network of LANs spanning a wide area, the internet is an example of this

3. Topologies

   • STAR
   • RING
   • BUS
   • MESH

4. TCP and IP

   • TCP Stack:
     • Application Layer - provides applications services to users and programs Transport Layer - Handles data-consistency functions (Error checking) Network Layer - provides network addressing and routing (IP Address) Data-Link Layer - Prepares and corrects data to be passed to the physical layer Physical Layer - Transmits and receives bits