Summary: Networks
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1 Networks
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What is a computer network
A collection of devices that are connected together to allow for the sharing of resources and information. -
What is a node?
A Node is the term given to a device connected to a network e.g. computer, mobile phone etc. -
What is a stand-alone network?
A network that isn't connected to any other device in a network -
Name an advantage of a stand-alone network
- If something goes wrong, only the standalone will be affected
- It is easy to manage
- it does not affect other computer users. -
Name a disadvantage of a stand-alone network
- You are restricted to a single computer, so you cannot access your files on another computer
- The same software cannot be installed simultaneously -
Name an advantage of Client server networks
- All files are stored in the same location
- Backups and network security is controlled centrally
- Users can access shared data -
Name a disadvantage of Client server networks
- A specialist operating system is needed
- Server is expensive
- If the server goes down, everything does. -
What is a Peer-to-Peer network
P2Ps are connected to other devices and not individually to a server -
Name an advantage of P2P networks
- No need for a network operating system
- Does not need an expensive server
- Easy to set up
- If one device fails, the rest are unaffected -
Name a disadvantage to P2P networks
- If a lot of connected devices are being used at any one time, it can slow everything down.
- Files/data cannot be centrally backed up
- Little or no security
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