2 of 3 Added block quotes to highlight the interview questions, modified tags

What's “Offline” in SDLC and when/why do we use test automation?

I was asked these questions during a job interview question. I totally stumbled on # 1 and for # 2 even though I answered but not a very convincing way. I would appreciate a concise and well phrased asnwers:

1) During SDLC, when would you be asked to take it "offline"

2) Throughout SDLC process, where would you implement test automation and why?