Richard,
I wouldn't be sweating the details like this. Don't lose sight of the fact that we are trying to build a web search engine. So, anything that make sense towards that goal will be acceptable. For example, in your first question, it would be perfectly reasonable either way, as long as in either approach the web page at http://www.mit.edu actually gets indexed. If it doesn't get indexed at all, then that is a bug. But otherwise, either way is OK.
As for the second question: If a 10-page limit is specified, then you should visit 10 pages. If the limit is 100 pages, then you should visit 100 pages.
But again, it wouldn't be a crime against humanity to have your alternate interpretation of this. It *would* be a crime, however, to loop forever, visiting an unbounded number of pages... |