Indian Railways had notified 3 types of vacancies. These were 35208 for NTPC (non technical popular categories like guards, office clerks, commercial clerks etc), 1663 for Isolated & Ministerial categories (Steno & Teaches etc) and 103769 for Level 1 vacancies (track maintainers, pointsman etc).
Indian Railways is going to start computer based tests for notified vacancies from 15th December 2020.