The total process is planned in way it is seamless and comfortable.
The total process hardly consists of 4 rounds where the company mainly focus on the integrity and willingness of the candidate towards the company and the role he/she applied.
They do check your knowledge in your core competency or the role you applied for but the whole understanding of the interview/ screening process is to check the genuine/ sincerity level of the candidate towards the company rather than the knowledge one holds.