I have a fair knowledge in computer studies/science. But recently, a came across some Primary 5/6 computer science questions which I seemed not to understand nor have any idea as to how they can be answered.

The questions are here below attached. Your response will be appreciated.

As a former teacher, there's something I got to understand during my years of teaching experience.

It goes thus: It doesn't matter your level of education, when it comes to exams, if you weren't specifically taught a particular topic or read a particular textbook for some exams, it's very possible for you not to pass the exams with good scores.

A Prof might still find it difficult to answer this question.

This picture is a proof of my hypothesis.