STC interview questions

It is kind of hard if you are not prepare very well. They asked a lot of question about Network security and Cryptograph which I studied in BA degree and Master. So please review what you studied in your major

through recruitment agency, where they called me, and they assigned the interview date and time, and then they sent the offer to me, and they started the approval processes with STC, and they asked me not to resign till they get the approval