Is there a specific teacher personality?

what is the role of the teacher when he is a source for language information?

Rapport means, in essence, the relationship that the students have with the teacher, and vice versa.

"students want teachers to know their names rather than just pointing at them"

Treating all students equally not only helps to establish and maintain rapport but is also a mark of professionalism.

Which is not a teacher task?

Teachers will know what kind of instructions to give, and what order to do things in.

Are attending teacher seminars and conferences good ways for teachers to learn new activities and to keep up?

The procedures on how to do things, the constant attention to innovation in educational technology, and the design of materials can be some technical skills that are required of teachers.