Cognizant GenC Developer interview questions

1. Tell me about your projects 2. What is your major(i said electronics and communication engineering) 3. What is the difference between GSM and CDMA? 4. What programming languages are you comfortable in? 5. Write a program that takes an input n, and outputs the pattern: 1 12 123 ......(till n) 6. How would you switch values between two variables without using a third variable. 7. Have you worked on the latest trends like IOT/ ML? 8. Three simple math problems from i.) Algebra ii.) Probability iii.) Profit/Loss 9. Do you have any questions for me?