Mr. Henderson makes an excellent argument, indeed just looking up answers to specific questions, will not serve you well.
In one of my former positions I was tasked with administering exams for people trying to attain trade certifications.
Many purchased the study guides, but did not read the texts themselves.
This leads to a lack of depth in your understanding of the requirements.
Most of the folks taking the shortcut would fail, sometimes it was as simple as changing the wording of the questions or problems.
The lack of depth did not allow for any different approach to the correct answer.

Rereading my earlier post I can see where I should have been more detailed in my answer.

What I could have mentioned was that one should read all the suggested books, then ask questions.
With a bit of "depth" in the subject you should Fear no test.
Not to mention that knowledge is its own reward, almost every thing you have learned will ease future ephinys.

(Sorry I just like the word Ephiny)

My clarification of sorts