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Network performance (Contention ratio (Examples (Sky (Speed - 59mbps, £32,…
Network performance
Contention ratio
You are only owning a small portion of the bandwidth.My home broadband would get around 50 mb per second. It is contended. That is why the bandwidth goes down at peak times of the day. You share the bandwidth with other users. Leased line stops contention ratio and it is completely yours.
Contention ratio is the number of users that have to share bandwidth with each other. In our home we have a hidden contention ratio. At mid day when bandwidth is being used the most, the network bandwidth goes down for you as others are using it too.
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Bandwidth and speed
Bandwidth is the maximum amount of data that can be transmitted throughout the whole of the network. The speed is the speed of the network to one singular node. If I did a speed test on my computer I would be calculating the speed, not the bandwidth. If I was the only person on the network I would get the maximum speed.
Bandwidth is not shared equally. If someone is downloading a movie they get the fastest speed whilst the other users have to make do with the rest. The more the people using the network, the less speed everyone on the network gets at one time. Bandwidth is very different from speed
Latency
Latency is how long it takes for a packet to travel across a network. Most networks measure latency in milliseconds. If you have played any computer game, for instance COD. If you pull the trigger a packet of data gets sent from your computer to the game's server to command it to shoot.
Whoever has the lowest latency gets their packet sent first and shoots first too. The lower the latency the faster the packet takes to get to it's destination
Error rate
Error rate is how often data gets corrupted. Errors are more common in WiFi connections because they are exposed to electrical items in the air as data passes.
Cabled connections like Ethernet cables are shielded from interference. The higher the error rate the lower the internet performance. They can effected by lots of things even washing machines or people walking around.
Connection speed
Ethernet cables are usually made of twisted copper cables. It reduces interference. An Ethernet cable is covered in a rubber coating. Ethernet cables are used for most networks. Fibre Optic cables transport data by beams of light. This is the most expensive type of cable but is extremely fast as data is transmitted at the speed of light.
WiFi is much slower than an Ethernet or Fibre Optic cables. WiFi has a shorter range and performs the worst when it has to transmit through walls. The further you are away from it the worse connection you have.Ethernet cables should never be longer then 100 meters, if it's longer than that the signal wouldn't last. Fiber optic cables are only generally used for connecting LANs and rarely used for just one LAN. It is the most expensive cable. PAN - Personal area network. MAN - Metropolian area network.