Why so many types of test?

Sample tutorial to identify the purpose of test
(click the picture to view)

(cont...) sample tutorial to identify the purpose of test
(click the picture to view)

What comes to your mind when the word 'test' or 'assessment' is being spoke out? Is it a +ve one or is it a -ve one? Well, don't tell me. Here is a sample of an exercise to identify the purposes of various types of test. Try to answer the exercise. Good luck!!! :)