Companies and education mostly want to test a specific area of knowledge of a certain subject, and not general knowledge. A quiz could be seen as a brief assessment to measure growth in knowledge, abilities, and/or skills.
A quiz is usually a short test, and often doesn’t have a huge impact on your grades as a test has. Some teachers may even not use the quiz grade at all to determine your course grade. Quizzes are often several times given by teachers throughout a course. It’s an easy way to keep track of your students and have an insight into the gaps of knowledge. It gives both the teacher and student a reflection. It shows students on what subject they have to focus. There are different kinds of questions that can be used for quizzes. Some examples are: fill-in-the blanks, multiple choice and true or false. It’s even possible to have image answers.