One of my friends is pursuing PGDIM at NITIE, and here is his insight regarding admission.
He mentioned the same on his CV. According to him, it is vital that you focus more on the GDPI and GATE score, instead of the technical skills, since you are applying for admission and not a job.
Your technical skills may not be needed in the academic curriculum designed by the institute. However, colleges usually look for a diverse set of students, thus if you have a certain technical skill, then it only might add value to your profile.