Are the topics mentioned in the syllabus of NTA/UGC NET enough or I need to revise all the topics again and over again?

Below is Unit-I of paper-I

Now let’s select any sub-unit/topic given under the Unit i.e. Methods of teaching. If you will take two/three books and compare what they have covered under this particular sub-unit then you will find that one book might be covering 13/14 bullet points while other will 15/16 points.

What I am trying to conclude is that UGC will never ask question outside of what they have covered under each sub-unit/topic but no one can comment what can be covered under each sub-unit/topic.

This is the reason why this exam is so difficult to conquer.