Networking

Networking

1. Different types of topologys

   • Ring Network
     • All the devices are connected to one either side of it.
     • Advantages
       • A ring network can transfer data quickly.
     • Disadvantages
       • If one cable or device fails they all fail.
   • Star Network
     • All the devices are connected to one central device (usually a server).
     • Advantages
       • If one computer stops working, the rest still work.
     • Disadvantages
       • If the central device stops working they all stop working.
   • Bus Network
     • All the devices are connected to one cable.
     • Advantages
       • Cheap to install
       • Easy to install
     • Disadvantages
       • If one computer stops working they all stop working.
       • All the devices see every file on the network.

2. Network types

   • Client - Server network
     • A client server network is an example of a star network
     • Advantages
       • All the files are stored on a server so your computer doesnt slow down from holding files.
       • They can access their files from any computer.
     • Disadvantages
       • More expensive than a peer - peer network.
       • If the server crashes all the computers can't access their files.
   • Peer - Peer network

3. Network Policies

   • Acceptable use
     • - Using polite language
     • - Not revealing personal details
     • -Not sending offensive documents or email.
     • - Not downloading programs
     • A set of rules which you must follow to use the network
   • Disaster Recovery / Back up
     • Must have a backup of your network
     • The backup should be in a remote location
     • A disaster recovery policy is to ensure if something goes wrong your files are fine
     • Have the means to stop disasters e.g fire extingwhishers
     • Back up once a day
   • Failover
     • If there is a power cut there are backup generators
     • Have a backup server so if one breaks it will switch to the second one
   • Archiving
     • Storing old documents in a remote location
     • Frees up hard drive space
     • Compresses the files so they are smaller
     • You can access the files from years ago