Cisco Software Engineer interview questions

very basic data structure and algorithm questions, How do you reverse a singly linked list? Write a C program to reverse a string. Write C code to check if an integer is a power of 2 or not in a single line? Things like that, I was ill prepared though

On campus preliminary interview, waiting for result. Typical resume, coursework walkthrough. Short question on data structure and algorithm. A couple basic networking questions. Interviewer was very nice and helpful. There is an on-site 2nd round after.