Engineers are responsible for designing and building products. In an interview context, expect to be quizzed on your technical skills, and also evaluated for your ability to work as a part of a team to get things built. The specific questions you are asked will depend on what type of engineering position you are looking for. Try a specific engineering discipline, such as software engineer, electrical engineer, or mechanical engineer.
can you host multiple https sites with different domain names but same IP on the same server? how
NO, server cant tell which site is which because traffic is encrypted.
The way question posed, the answer is YES, since you could cover all those https sites with a single certificate. But now this should even work for individual certificates http://en.wikipedia.org/wiki/Server_Name_Indication
Yes you can that's what virtual hosting is for. https://en.wikipedia.org/wiki/Virtual_hosting