I was contacted by HR after applying on the company website. I had an initial phone screen with the hiring manager.

I was contacted a day later and invited for an on-site interview.

I interviewed with a total of 8 people, including the hiring manager. Each interviewer focused on a particular skill set or body of knowledge. There were no trick questions or gotchas.

I was told at the interview that hiring decisions had to be unanimous. The recruiter contacted me a week later with an offer.

Explain the phenomenon of the Doppler effect.

Advantages and disadvantages of spread spectrum communications.

Is it possible to design a communication system with zero probability of error? If so, what would be the trade-off?