The interview for Cloud Support Engineer at Amazon started with phone interviews. I went through 3 different interviews, all very technical, with just a few simple personality questions. The technical questions were around subjects related to networking: DNS, BGP, IP, HTTP and other. Questions were not tricky, and if you have general good knowledge of the protocols, then it shouldn't be hard. In my case, my knowledge was not that vast, and I didn't answer a few questions, just told an interviewer that I did not know the answer. Nevertheless, I was invited for additional interviews, and they were also of the same format, and questions were around networking too. After all the phone interviews (I think I had 2 or 3 total), I got an invitation for on-site interview in Texas. At that point, I declined the invitation since I got a different offer. Overall, if you have knowledge, I think interviewing (at least phone interviews) for entry-level positions is not difficult.