There are nine different test areas as part of the ASVAB: general science, arithmetic reasoning, word knowledge, paragraph comprehension, mathematics knowledge, electronics information, auto and shop information, assembling objects, and mechanical comprehension. The paragraph comprehension test area contains the fewest questions with 15. The word knowledge test area contains the most questions with 35. All other sections contain 20, 25, or 30 questions. Taking numerious ASVAB practice tests is recommended for test day success.

The four most important sections of the test—Word Knowledge, Paragraph Comprehension, Arithmetic Reasoning, and Mathematics Knowledge-make up your Armed Forces Qualifications Test (AFQT) score. Your AFQT score ranges from 0 to 100 and determines if you are able to enlist in the military and which jobs and programs you may qualify for when you are in.
The various armed forces adopted all of those aspects in 1976. At that point in time, the test was in its written form rather than today’s more common form (computerized test format). The written form covers all of the previously mentioned areas as well, which is why both forms are still available. All-in-all that answers the question concerning the intention of the test.