ZenQ Software Testing interview questions

The process has went for 2 days.It was on campus drive. Rounds are like 1)written test..11(apt),11(verbal),11(reasoning),12(c outputs).Very easy to clear this round.out of 45 can easily get 30.if you are good with c basic progms like palindrome,amstrong,recursion,sum of n numbers.output of given program is easy to identify. 2)GD.This is not an elemination round until and unless you speak a single valid point. 3)Technical round1-If you are from IT/CS,you need to be perfect with concepts from cao,os. What is semaphore,mutex,monitor.and little basic questions from c,java. From other branches you need to perfect with puzzles.prefer shakuntala devi puzzles. 4)Technical round2-same process.I performed well in tr1 so there was no tr2 for me 5)ceo round-puzzles,os,cao..(what is direct memory acces,virtualmachine,scheduling algorithms)