ITR,
I guess this new exam format is designed to test not only your theorectical knowledge but also your technical logic ;-). It may be unfair for the exam layout to be a little unclear in some questions, but if you think about it, in real life, some of the technical problems you face do not always have clear method of resolution. Next time you sit the exam, keep a clear mind and apply some technical logic and I'm sure that you should be able to work out the solution.
JimmyZ
PS: If you think these question are tough to work out, wait until you start working on getting your CCIE.