SSL stands for Secure Sockets Layer. It is technology that keeps sensitive information, like credit cards, social security numbers, user names and passwords out of the hands of cyber crooks.
What is the internet and how it works can be taken for granted. I strongly advise, if you don't really know how it works, that you take time to watch an 8-part video series from code.org (each video is extremely high-quality, well presented, engaging, short, and to the point). When I first started online, I truly had no idea what things are. I found that series to be extremely helpful. This is the first video, "what is the internet?"..
Try broadening your search.
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