This question is similar to several others that have cropped up on ServerFault over time, which appear to paste verbatim basic networking questions from certification or university courses. Some responders attempt to provide legitimate answers; others leave comments with feedback or links to other resources.
One answer has deliberately provided false (if amusing) information. My instinctive reaction when faced with this is to down-vote the answer, if only to prevent it being viewed as useful by someone who stumbles across the question from a web search in the future.
What are people's thoughts on this kind of reaction to 'homework' questions?