Check Point Software Technologies Information Security Technology Lead interview questions

on the home assignment: Create a service on AWS that check the magic number of a file and based on a policy that dictated in a configuration file on the server side, the service return if the file is safe or not. Write A chrome extension that work with that service, and cancels the download if the file is not safe. the last interview with the architect I was asked which db to use for some design of a system and why, also I have been asked about things that I have worked on my organization- the interviewer wanted to know in very details what was going on on the organization I working- things that should not be asked on an interview.