Cisco

Data structures, C, and OS are the things that rule for a Cisco interview. If you know them, you can get through. First round: C Second round: OS Third round: DS

Coding interview: 1. Regular expression matching 2. String with a common prefix 3. Reverse a doubly linked list in better than O(n) time. The interviewer was nice and friendly. The whole process was smooth and professional.

I had a phone interview where I was asked basic networking questions and some C questions. It was all very simple. Later, I had an onsite interview with five rounds. Four rounds were technical, testing my C skills, OS concepts, networking, and past