Broadcom interview questions

I applied for an intern position. Then their human resourse emailed me for asking my interest abt one position. I replied affirmative then I received a call. On the phone they asked me about my engineering back ground, experience with testing equipments. Then they set a on site interview. The interview was with 4 persons, but one after another in the same room. first person ie. senior engineer - asked me about RF theory, matching the transimssion line. second person Jr Engineer- ran through my extracaricular activities, he was friendly and left 10 mins early thrid- Principal Engineer. he took my other engineering projects out..went into dept. last but not least..the manager: asked me to describe a Car? Ans: I started with what I usually see in a car, gas, break etc. Expected ans: He stopped to mention the Engine..should be at first place.. what is DMA, UART and some other computer stuff.