Details technical questions. Mostly about telecommunications. Revise optical fiber, antenna, wireless. Also must have the knowledge how to handle customer report. Also have calculation question which is basic formula to calculate lamda using light velocity

The interviewers were late for 20 mins in the first round of interviews (technical assessment). They explained the role required on-call standby (which is not stated in the JD). The rotational after-hour on-call shifts are 4 hours (6 pm - 10 pm and so on). The final interview was conducted by the hiring manager. He was honest that I do not have the relevant hands-on experience with a high expected salary. Since then, I did not receive feedback on my application status.