Infosys Software Engineer interview questions

We had a simple talk about the current affairs. Interviewer asked about the UP politics and some of the local Delhi issues. As i was an electronics Engineer so he started asking some of the electronics questions. I dont think he even himself knew the answers because after three years of work experience all i know is that a INFY guy can't remember any tecnical details(no matter he was an eletronics Er himself). Just for time pass he was asking some questions about type of radiations and different uses of those types. Later he asked me some Aptitude questions and a Maths puzzle.

I applied through one person in infosys who post my resume and i got a call then The test consiist of four phase. written test puzzle and english then 2 interviews on c C++ and unix then HR interview the first phase was a generic interview easy question mainly on pointers linked list the 2ns interview had some question from voip, unix vxworks etc