IB ACIO Grade II Executive 2020 Tier 1 Exam held on 20 February 2021 (Shift 3) was part of the national-level recruitment drive conducted by the Intelligence Bureau. This objective-type paper assessed candidates across subjects like General Awareness, Quantitative Aptitude, Logical Reasoning, and English Language. The exam followed a multiple-choice format and served as the first stage of the selection process for the post of Assistant Central Intelligence Officer (ACIO). It was designed to evaluate a candidate's analytical skills, general intelligence, and problem-solving ability within a strict time frame.