In Moodle 2.6
Is this possible: Two questions. If both are answered correctly gets the student a point and otherwise zero points?
As a logical 'and'
There is a question type - "all or nothing" - https://moodle.org/mod/data/view.php?d=13&rid=4014
Not sure however if it works in 2.6
Yes all or nothing (multichoiceset) question type works with Moodle 2.6 but not the one Emma linked to. You must download it from here
But I don't think that this answer the original poster's question : Two questions. If both are answered correctly gets the student a point and otherwise zero points.
So the answer is no, that is not possible.