What is the perfect method to send the information to your students?By asking questions or by giving an examples?

both are ok, it all just depends on the situation.

you can give them informations through examples but asking them questions may complicate it more

You give them a perfect example of any ideas that the students given to you, and explain them how they are going to understand.

by giving an examples and questions may complicate it

giving an example is more good for giving information

by giving more and more examples

The best one is giving real time examples, and compare it with the concept

two reason by asking for meny qeustions could help student also for giving some real examples

giving examples could be the best way to understand such a topic. to begin the lesson usually a good teacher gives the  issue or the concept to students then  the brainstorming of it ,this could innovate the  students interference in answering  and keeps the lesson constructive to them

Its always effective to communicate through an example as students find easy to correlate a theory with it. 

It is better to ask first to get student attention and make them to think about the subject and let them answer as per thier knowledge and ideas. later it is teacher's duty to give correct answers with examples.