I applied online and gave a video interview. The questions at Glassdoor were helpful. A few weeks later, I had a technical interview. Most of the questions were from Glassdoor; I could not answer 2-3 correctly, maybe. I guess if you cannot solve a problem, you can ask the interviewer for hints, and if you are wrong, they might try to make you reconsider your answer.

After the interview, the interviewer asked me to ask questions about the position. He said he would forward my results and that I would hear from them in 2 weeks if they were interested. I checked my application status after 10 minutes and found out that I had been rejected.

You have to answer everything correctly, I think. The questions you ask the interviewer after they finish could be important. If you cannot answer correctly, you may try to explain your steps; I'm not sure if it counts, though.

Depending on the interviewer, you may need to code something in MATLAB online using Webex. I think the subject you choose (e.g., signal processing, controls, or embedded systems) to answer questions carries more weight. One of my friends was asked questions from Simulink. I'm not sure if this is something they do regularly, as no one else mentioned Simulink.

1. What is the difference between a null pointer and a void pointer?

2. What is the relationship between the determinant of the inverse of a matrix and its determinant?

3. If there are 400 people in a room, what is the probability that at least 2 people share the same birthday?

4. For a linear discrete system with impulse response x[n] = [1 2 3 5 10] and an input signal frequency of 100Hz, what is the output frequency?

5. What is the relationship between the Z-transform and the Fourier Transform? Provide an equation for it.