Graduate Management Admission Test, usually required for applicants to business or management programs. So, if you plan to have a MBA then this test is something that you will meet soon :)

The Graduate Management Admission Test (GMAT) examination consists of three main parts, the Analytical Writing Assessment, Quantitative section, and Verbal section.
Analytical Writing Assessment

The GMAT exam begins with the Analytical Writing Assessment (AWA). The AWA consists of two separate writing tasks—Analysis of an Issue and Analysis of an Argument. Test takers are allowed 30 minutes to complete each essay.
Quantitative Section

Following an optional five-minute break, the Quantitative section of the GMAT test begins. This section contains 37 multiple-choice questions of two question types—Data Sufficiency and Problem Solving. Test takers are allowed a maximum of 75 minutes to complete the entire section.
Verbal Section

After a second optional five-minute break, the Verbal Section of the GMAT test begins. This section contains 41 multiple-choice questions of three question types—Reading Comprehension, Critical Reasoning, and Sentence Correction. Test takers are allowed a maximum of 75 minutes to complete the entire section.

More Info is available at GMAT official page www.gmat.org 

There are several more exams that you may be interested in.. For more information about a particular exam please feel yourself free to write us. Education WG Board will be more than happy to supply you all necessary information concerning to your question as soon as possible.