Explain me what is the main advantage of loading jQuery library using CDN?

Submitted by: Muhammad
This is a slightly advanced jQuery question. Well, apart from many advantages including reducing server bandwidth and faster download, one of the most important is that, if browser has already downloaded same jQuery version from the same CDN, then it won't download it again. Since nowadays, many public websites use jQuery for user interaction and animation, there is a very good chance that the browser already has the jQuery library downloaded.
Submitted by: Muhammad

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