Joint Entrance Examination – Main (JEE-Main), formerly All India Engineering Entrance Examination (AIEEE), is an Indian standardised computer-based test for admission to various technical undergraduate programs in engineering, architecture, and planning across colleges in India. The exam is conducted by the National Testing Agency for admission to B.Tech, B.Arch, etc. programs in premier technical institutes such as the National Institutes of Technology (NIT) and Indian Institutes of Information Technology (IIIT), which are based on the rank secured in the JEE-Main. It is usually conducted twice every year. Since 2019, the JEE has been conducted fully online as a computerised test. History The AIEEE was introduced in 2002, since the newly established NIT and IIIT universities wanted an entrance examination paper of a higher standard than the Common Engineering Test (CET), which was formerly used for admission to all non-IIT engineering universities, including even RECs and IIITs, owing mostly to the rising competition and the goal of maintaining the exclusiveness of such institutes of national importance. It was renamed to JEE-Main in 2013. Until 2018, the exam was held both in pen and paper and CBT modes, as well as was held in the first week of April by the Central Board of Secondary Education (CBSE). It is conducted by National Testing Agency in CBT mode only from 2018 onwards. The 2020 and 2021 exams were postponed and conducted later in the same years, due to the coronavirus pandemic. 2021 was the only year throughout JEE-Main history, when a maximum of 4 attempts were given to students. In general, for the rest of the years, most students took the JEE-Main exam in either 1 or 2 attempts, even though a maximum of 3 attempts is allowed during two consecutive years. Structure The examination consists of only two papers: Paper 1 for B.E./B.Tech courses and Paper 2 for B.Arch and B.Planning courses. A candidate can opt for any or both the papers. Paper 1 is mandatorily a computer based test (called online mode) from 2018 onwards. Until 2018, there was an option between offline pen and paper mode and online computer mode. The examination was conducted only in offline pen and paper mode till 2010. In 2011, as per the orders of the Ministry of Human Resource Development, CBSE conducted Paper 1 in Computer Based Test (CBT) mode for the first one lakh candidates who opted for the same, while the remaining