Cisco Interview Questions

Had 5 rounds of interview

1. Telephonic technical Round
    * steps of compilation
    * storage classes & memory allocation
    * pass by value & pass by reference
    * questions on pointers
    * stack & heap in C
    * Reverse a linked list
    * Middle element of a linked list
    * difference between insertion & quick sort
    * time complexities of all sorting algorithms
    * difference between TCP & UDP

2. Technical round-1 (F2F)
    * TCP/IP layer
    * how ping works
    * IP header
    * questions about data link layer

3. Technical round-2 (F2F)
    * Find a duplicate in an array of 1 to n elements
    * swap without comparison
    * deletion of a linked list
    * find a loop in a linked list
    * set a bit in a integer
    * stack & heap - malloc & calloc
    * some questions in pointers

4. Technical round-3 (F2F)
    * find the sum of array using recursion
    * pattern matching
    * find the intersection of two linked list and questions on projects done.

5. Manager round (F2F)
    * how trace route works
    * how route works
    * ipconfig works
    * some HR questions like , how you manage pressure, strength etc.,