Cisco Engineer Network Consulting interview questions

I just had two quick phone call interviews. Nothing technical. More about how you work and how you try to improve and learn. Some of my cohort did receive technical questions however.

Cisco systems came to our college campus for recruitment in 2019. First round was online test which includes 25 MCQs and one coding question. MCQ were from topics like networking, operating system, digital electronics, logical and numerical aptitude. Coding question related to strings. Out of 600 students 32 were selected for interview round. MCQ cutoff was quite high almost 21 out of 25. Round 2 f2f interview First of all they asked about my project in detail. Later on they asked few networking questions like Difference between router and switch? Difference between https and http? How to broadcast a message on local area network? Then they asked a coding question - calculate the count of a perticular number in a stream of numbers which contains many GBs of data. He asked me to write a code for it. Then he asked me a puzzle - you are given 8 balls one of them is defected that is it has more weight than other balls, you need to find the defected ball by usind a balancing machine minimum number of times. Later few general questions regarding object oriented programming.