I would say you must have the basic knowledge of DSA, that plays a major role during my selection! The level of questions was medium to hard(very rarely). All panelists was well professional and wants to take the good candidate! I had two technical and one hr(formal introduction)

Questions based on core subjects, in my case, ece. satellite comm, Analog/ digital comm., antenna, networks, os, told me to write basic programs in preferred language general hr tested knowledge on recent technologies