How to deal with the topic of encodings?

Question

Java

There is a coding test. But it contains questions on a topic that was not discussed in the lecture.
Provide an explanation for at least one question. Where can this knowledge be useful? Or advise an article in Russian on this topic. Preferably on the whole topic of encodings, in particular in java.

Answer 1

Golovach has good lectures. One on this topic.
https://youtu.be/j0Ad02f95eE?list=PLwcDaxeEINadGe-...