Real Interview Questions
IBM Interview Questions (Real, Asked)
11 real questions candidates were actually asked at IBM interviews. Practice any of them out loud with Roundd AI and get instant feedback — free, no signup.
Practice these questions with AI feedback →- 1.
Convert an IPv4 address to an IPv6 address.
Software Engineer
- 2.
Find the length of the last word in a string, where words are separated by one or more spaces and there may be trailing non-character symbols at the start and end.
Software Engineer
- 3.
Create a linked list node in any language of your choice, then explain how you would detect a cycle in it.
Software Engineer
- 4.
Write code to swap the MSB and LSB of an integer, and code to detect whether a system is little-endian or big-endian.
Software Engineer
- 5.
What types of vulnerabilities do you see in the real world? What CTFs have you played?
Software Engineer
- 6.
Write the logic for printing a pyramid pattern.
Software Engineer
- 7.
What is a foreign key? How does a linked list compare to an array?
Software Engineer
- 8.
You're given the word 'warm' — convert it to 'cold' by changing one letter at a time, where each intermediate step must also form a real word. You have exactly 4 changes, matching the word's length.
Software Engineer
- 9.
Write a program to reverse a given integer.
Software Engineer
- 10.
Explain and implement bubble sort.
Software Engineer
- 11.
Given a scenario, write SQL queries using joins, group by, and aggregate functions to fetch the required data.
Software Engineer