The exam, which is computer-based, is held in 81 subjects in over 200 cities across the country. After the registration process concludes, the NTA will issue the admit cards for the exam. The information entered in the application form can not be changed. "NTA does not edit/modify/alter any information entered by the candidate under any circumstances. Any request for change in information will not be entertained. Therefore, candidates are advised to exercise utmost caution for filling up correct details in the Application Form," the exam conducting agency has said. While filling the application form, the candidate has to select any four states or cities of choice where they want to appear for the exam. "Effort will be made to allot Centre of Examination to the candidates in the order of Cities opted by them in their Application Form. However, due to administrative reasons, a different city of nearby area may be allotted," the NTA has said.