Cognizant Programme Analyst interview questions

Through campus placement. Easy interview basic questions were asked related to my engineering background like what is a diode,what are gates, how electricity is generated, what is compiler, basic codes of prime numbers printing from 1 to 100, bubble sorting

First round was Aptitude round and then we had the Communication round followed by Technical round. Technical knowledge is required on any programming language.communication is important .they asked me explain my project,gave a program to solve.