Suppose someone asks for help with an interview question, such as this one:

I was asked this question, but don't know the answer. Any help on how to approach this would be greatly appreciated :)

I have just plugged in my network cable. How many packets must leave my NIC in order to complete a traceroute to twitter.com? Describe the various layers and what must ensue.

Does NE want interview questions to be on-topic? Speaking personally, I don't think we should accept interview questions, but let's hear from the community.