About 70-300...any opinions?

Hi all,
I'm studying for 70-300 exam on this book:Analyzing Requirements and
Defining .NET Solution
Architectures - Exam Cram - Randy Cornish et al.
Well the problem is... that questions are too easy! I mean:after just
one reading I can give about 80% correct responses. Especially the
parts on deployment,logical design, conceptual design seems to me a
"light" version of topics in other exams(70-229,70-315 etc...) which I
already did.
Moreover I found that a lot of questions could be answered only by
careful reading
of the case study, without prior knowledge you might have (almost) .
Am I wrong?What do you think?

.

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