Overall, it is very friendly, you should not overthink it. Depending on what you apply for, there may be a skills test, but the majority of it is behavioral. Know your resume well and have a good reason why you want that specific internship. Also of course do background on the company and the part of the company you want to work in.
Interview questions [1]
Question 1
Why do you think you would be a good fit in this industry and why would you be a good fit at Cisco
It was nice, informative. One should prepare using all resources. They will judge your understanding based on everything that you ever demonstrated in the process, so be aware of everything you said or mentioned.
It was basically deep dive into resume and some questions on Dsa. The overall experience was good. There were 4 rounds in total. Be familiar with basics of the language that you primarily use.
The process took 1 day. I interviewed at Cisco (Bengaluru)
Interview
3 rounds. 2 tech and 1 HR. The tech rounds lasted 1 hr 15 means each. HR was just formality for me though some had proper HR rounds. They wanna see how you work out solns with them over the actual one.
Interview questions [1]
Question 1
They were curious on knowing why did you do your projects over what you did.