Larsen & Toubro Interview Question

Technical (Digital Design and Digital Communication) 1. Design a non inverter op-amp. 2. Nested loop using digital circuits. (Question was different but I understood it was nested loop and conveyed the same without actually making the digital design) 3. Project details. 4. FFT butterfly diagram. (didn't answer) 5. Types of digital communication techniques. (Questions were vague, since the interviewer was not from this domain, and this question was followed up to check if I stand by my claims.) Non-Technical (by the same person) 1. Why do you chose the particular department you mentioned.