Are these all interview/homework questions? ethical question, replication, Adjusting T-sql to prevent injection, accidenly dropping production, failover, idol steps to take.
Why don't you tell us how you answered the question, and then we can tell you our opinions? Us giving you the answer here is clearly not the right thing to do here.
Take the time to answer your own (your interview/homework question) and explain your answer; we'll be happy to then provide you with tips or advise where you might be going wrong.
Excuse my typos and sometimes awful grammar. My fingers work faster than my brain does.