Aftwre a couple of mail with the HR person we scheduled a technical phone interview. I had two technical 1h phone interview with two different people. The first one was harder but I answered to most of the questions. They asked questions like describing how does a TCP connection work, describing load balancing algorithms, advantages and disadvantages of load balancing, differences between RAID 0-1-5-10, which commands are used in Linux to troubleshoot network problems, Subnetting. The interviews were nice and the conversation was also fine. The time between the two phone interviews was 2 weeks. A day after the second phone interview I received an email saying that I was not selected.