GMAT
The Graduate Management Admission Test (GMAT) is an adaptive computer test conducted around the year at test centers worldwide. The GMAT exam measures verbal, mathematical, reasoning, and analytical writing skills. The test is designed to help graduate management programs assess the qualifications of applicants for advanced study in business and management. 
The Graduate Management Aptitude Test (GMAT) is needed for admission to an MBA program or a business-related field such as finance. More than 5,200 programs offered by more than 1,900 institutions all over the world use the GMAT as part of the selection criteria for their programs.
GMAT was originally a paper-and-pencil test, it is now a computer-adaptive test (CAT), where examinees sit at a computer in a testing center. The computer-adaptive test format means that the difficulty of the questions faced are based upon the test performance. From June 2012, integrated reasoning section was added to the GMAT.
The GMAT exam consists of four separately timed sections:
1.    Analytical Writing Assessment (AWA) Essay
2.    Integrated Reasoning Section
3.    Quantitative Section
4.    Verbal Section 
Section    Number of Questions    Duration
Analytical Writing    Analysis of Argument    30 minutes
Integrated Reasoning Section    12 Questions    30 minutes
Optional Break of 10 minutes
Quantitative Section    37 Multiple Choice    75 minutes