The UGC conducts the NET in total 84 subjects in all over the India in total 91 centers. The marks is of total of 300 marks. And there are two cut offs: one for NET and the second for JRF. For example, the cut off for simple NET in computer science goes around 56 % and the cutoff for JRF is around 65 %. Means if a candidate secure total marks more than 56 % but less than 65 %, he will be awarded for NET certificate and the candidate secure more than 65 %, he will awarded JRF. However the cut offs vary every year and different subject to subject.
NET is simple an eligibility for the job of Assistant Professor in colleges whereas the JRF( Junior Research Fellowship) is where a student who qualified JRF is given as fellowship of around 30000/- rupees per month if he does PhD or Research.