An examination (exam) is a test. It is an assessment to measure a test-taker's knowledge,life skill, aptitude, physical fitness, or standing in some other topic. It is a set of question that finds out student's knowledge on various topics or fields. Examinations change and evolve. They have been used since ancient times.
In its widest sense, to examine is to look at something very carefully, perhaps to find out why something is not working properly. Someone who is ill may need to go to a doctor to have a medical examination. A machine that is not working properly may need an examination to find out the cause of the problem.
In education an examination is a test to show the knowledge and ability of a student. A student who takes an examination is a candidate. The person who decides how well the student has performed is the examiner. An examination may be a written test, an on-screen test or a practical test. Examples of a practical test may be: driving a car, speaking a language, playing a musical instrument and doing a scientific experiment. An on-screen test is a test which uses the computer.
If the candidate is successful he will have passed the examination. If he is unsuccessful he will have failed. In some cases it is possible for a student who has failed to take the exam again another time.
A student who passes an examination may get a certificate or diploma. Some certificates are professional qualifications, allowing the person to do a particular job, e.g. plumber, teacher, doctor, lawyer.
A exam is also a test that every pupil will despise at the end of their last academic year in computer. It will infuriate all of the pupils and will cause stress to them all. It is the worst test possible to do in your whole life and the most mentally challaging.