Please enable JavaScript.
Coggle requires JavaScript to display documents.
Networks - Coggle Diagram
Networks
-
-
WAN(Wide Area Network)
- Covers a large area
- Own some of the hardware, rent others
LAN(Local Area Network)
- Covers a small geographical area.
- Limited to a building or site
- Own all the hardware
-
DNS (Domain Name Service)
- You want to visit the BBC
- You enter bbc.co.uk into a browser
- It sends a request to the nearest DNS server
- DNS looks up the URL in its database
- and returns the IP address to the browser, which can now access the website
- If it can't find the IP it forwards the request to the next DNS server
-
- Page splits into lots of small packets
- Each packet is given a sequence number and the destination IP address
- Packets are sent but might take different routes. If lost the packet is requested again
- Packets are assembled on the destination computer