Infosys Asociate Consultant interview questions

The interview process is a multi-stage process for hiring new employees. The interview process typically includes the following steps: writing a job description, posting a job, scheduling interviews, conducting preliminary interviews, conducting in-person interviews, following up with candidates and making a hire

It went well and , i wad recieved very well. All that i have was how do you not tell the person about the job role clearly and i really don't understand why this happens and why companies do it this way.