Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Confusing not helpful for me

I found the book very confusing. The endless diplay of routing tables became very boring it seemed most of the pages are filled with routing tables. As far as a book that is supposed to help prepare for a test this was the worst one I have ever read and I am presently a CCNA CNE and MCSE so I have taken many tests.Also one of the reviews mentioned a cdrom with the book that must be a mistake as I am looking at the book now and there is no cdrom with it.