IBM Operation Automation Engineer DevOps interview questions

Quick phone interview and invitation for on-site interview. Phone interview was basically about my cv, college and my experience. I was interview by 2 guys inside the company. I received number of questions about basic linux commands like list processes, troubleshooting, how to find ip etc.... Next they asked me number of basic questions about networkings like what is gateway, routers vs switches, ip, dns server, how dns works, what happen when you type address and press enter in the browser. Lastly they asked me basic java questions like what is final, abstract class, interfaces, threads and they told me to design recursive Fibonacci sequence. Next they gave me java test(similar to OCJP exam) for 20 minutes.