Preety simple if you know what is specified in job description. They are not expecting you to be an expert, they just wnat you to let them know that you are willing to work and to gain knowledges quick and productiv.

Phone discussion about you skills and english level of speaking, that took around 15-20 minutes. The online technical test was all about linux, shell scripting, Git and networking knowledge.The last interview was an online teams call which was about testing soft skills and communication test.