OER/PfR at lab exam?

Hi,

I just purchased ciscopress ccie r&s exam cert guide 4th edition,
since I had 3rd in which there was nothing about OER and PfR. I must
say that the quality of that subject in new edition of the book is
really poor. One config example without any explanations and without
any topology diagrams. Nothing that can help someone to understand the
topic.
So, my question is how deep this subject goes in potential task at
exam? How much time should I spend on it since it can be very complex
feature? The book says:
"As you will see as you explore PfR more deeply, it is remarkably
powerful. As you would expect, it also has many configuration options.
For the CCIE R&S qualifying exam, you should understand the concepts
of PfR and how it operates and its core functionality."

Thanks.

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Received on Wed Apr 11 2012 - 00:35:25 ART