IDEA Cellular Graduate Engineer Trainee interview questions

List the different layers in atmosphere?

1:- What is your objective for the future and where do you see yourself ? 2:- What is OQPSK ? 3:- What is the need for modulation ? 4:- What is QAM and what is the meaning of 64 in 64-QAM ? 5:- What do you understand by GPS system and how does it work ? 6:- Explain your project ? (They asked about the various types of problems arising in the project and how would you tackle them.) 7:- What is the biggest achievement of your life so far ? 8:- What is the full form of OSI model and what are various type of layers present in the model ? 9:- What is the frequency of audio signals and what is the difference between audio and speech signal ?