- be able to explain the difference between bandwidth and latency.
Must – understand that bandwidth and latency has an impact on downloads.
Should – be able to recognise the difference between fast and slow latency and high and low bandwidth.
Could – discuss the importance of having a fast download and upload speed.
What is the importance of Bandwidth and Latency?
Using a network connection involves transferring bits (1s and 0s) between 2 devices. Network performance is how well that network can transfer the bits. Bandwidth and Latency are two measurements to describe the performance of a network connection.
Bandwidth is the measurement of capacity on a network.
Bandwidth is the number of bits that can go through the network connection in 1 second. It is measured in bits per second (bps). Example:
1Kbps = 1 thousand bits can be transmitted every second
1Mbps = 1 million bits can be transmitted every second.
High Bandwidth = Good
Low Bandwidth = Bad
Latency is the measurement of delay.
Latency is the time in milliseconds between a bit leaving on the device and arriving at another device. It is measured in milliseconds (ms). The lower the time the quicker the download.
Low Latency = Good (Fast)
High Latency = Bad (Slow)
For a user
A person who has High Bandwidth and Low Latency has a good network connection and will be a satisfied user. On the flip side, a Low Bandwidth and High latency network connection will cause frustration and dissatisfaction.
This is a topic which trips lots of people up in the final examination. Write a set of clear revision notes with a detailed example where possible so you understand what Bandwidth and Latency mean, and also the difference between good and bad Bandwidth and Latency.