As we all know GD-PI is one of the most important and difficult hurdle to cross, if you wish to crack a campus interview, enter a reputed business school or firm to get a job.
The first impression is the last impression and a favorable impression will help you get noticed by the panel, which is looking for:
Presentable appearance, body language, corrects dressing, good manners, command on the language with correct pronunciation and ability to express & impress
And for personal interview he needs all original documents in a portfolio.
And market information of the prospective employer.