Algorithms are a set of rules to follow that give a solution to a problem. These algorithms are commonly expressed as flowcharts or pseudocode.
Variables are commonly used in algorithms. These assign a specific value, True/False to a term like done in algebra. For example, “apple” = 1 or LateToWork = True
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Advantages
People do not need to remember IP addresses
Easily upgradable (eg IPv4 to IPv6) without all web addresses needing to be the same
As long as you are connected to a DNS server you can have access to all the addresses
There are 2 main types of compression:
Lossy compression: Reduces file size and quality by removing data that won’t be noticed. For example, in images unnoticed colours and details are removed. In music, unnoticed sounds are removed. This reduces the quality. When the data is uncompressed it is not exactly the same as the original but the difference is so small that it cannot normally be noticed.
Lossless compression: Original file keeps the same quality but the size is reduced by noticing patterns and compressing them. E.g. include compressed text files.
