Mainly on oops concept. C programming and visual basic. It lasted for 3 hours and question was from datastructure. So you need to brushup all concepts of data structure and oops.
The process was of four phases: two group exercises and two interviews. The first group exercise included a presentation, while the second was a logic exercise. The interviewers were friendly and welcoming.
I applied online. The process took 3 weeks. I interviewed at IBM (Londres, Inglaterra) in Jan 2018
Interview
The interview had 3 stages - phone interview with recruiter, technical test / skype interview with senior developer , phone interview with manager. The interviews were very professional and straight to the point without wasting the time.
Interview questions [1]
Question 1
What is difference between software engineer and developer