Networks - explain
1. What a network is
A network is a group of interconnected things like computers to printers.
2. Why we network - 3 reasons
a. Communication
We can use it for communication like Facebook, Snapchat or twitter.
b. Share Resources
You can share things like computer programs and data sharing you can share with each other’s.
c. Share Data
You can share data likes files.
Diagram
1. School topology
Scrollers
1. Topology - 6 different types - pros & cons
a. Peer to Peer
This is when one or more PC is connected to a server.
b. Linear Bus
This is when a main cable which has a terminator at each ends which connects to all the nodes. The pros are that it is cheap and the cons are that it can be slow and it can also stop working when there is a break in the bus system.
c. Star
This is a network where all nodes are connected to a common central computer. The pros are it is common and very fast. The cons are that it can break and its expensive.
d. Tree
This is when two or more stars are working together.
e. Token Ring
This is when all computers are connected in a ring topology so the data doesn’t collide. The pros are if it breaks it can go into a bus network. Cons it will not be a ring one any more.
f. Wireless
This is when all the nodes are connected by data connections. Pros are there are no wires but cons are it can be slow at times if many people use it.
2. Devices
a. PC
A PC is a personal computer where you can download what you want on in and have what you want on it.
b. Server
This is a computer or device that manages network resources.
c. Printer
A printer prints of the work or pictures you
d. Hub
A hub is what connects your mobiles and computers to the internet and gives you the power to do that.
e. Switch
Is a device that connects the networks all on a network.

f. Router
A router is something that can connect your phone or computer to the internet.

g. Patch panel
It is a board in a switch board with a number of electric sockets which connects everything.
Paragraphs
1. Bandwidth - amount of data, equates hose pipe
More data coming down per second, for example in fibre optic there are thicker wire to get more data to go through.
2. Wireless vs Hardwired comparison
Wireless is fast, efficient and saves having loads of cables and wires around the place. Hard wired on the other hand is the opposite as it is slow and you need wires everywhere.
3. Peer to Peer vs Client Server comparison
Peer to peer is cheaper and simple why client server is quite expensive and quite complicated. On peer to peer its can operate on a basic system while client server needs a special system to work
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Network devices
Communication methods
networking terms