I was asked this question in an interview for QA position:
Tell me all the possible ways you can shutdown your system. The system could be in a network.
I know this question is little vague. This was question asked by the interviewer, may be he was expecting me to answer with respect to virtualization?
My Answer: use ssh to shutdown different systems in the network.
He was satisfied with this answer, but was expecting me to tell me some other ways.
So, what are other ways of shutting down a system?