Queston on Server+

in Server+
Quick question here, I am planning on taking the server + here in a couple weeks and was wondering how good an indicator the practice test was in Johnathan Lau's book? Usually on practice tests I like to be scoring around 90 before I go and take a test so was wondering if I score a 90 on this particular test would it be a good indication that I am ready? Thanks all.
WGU - B.S. Information Technology
Goals for 2013: Complete B.S. Information Technology from WGU (Completed! Graduated August 2013), CCNA (in progress)
Goals for 2013: Complete B.S. Information Technology from WGU (Completed! Graduated August 2013), CCNA (in progress)
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I wrote a quick speil about it, see link: http://www.techexams.net/forums/server/77046-exam-cram-server.html#post631599
Goals for 2013: Complete B.S. Information Technology from WGU (Completed! Graduated August 2013), CCNA (in progress)
Goals for 2013: Complete B.S. Information Technology from WGU (Completed! Graduated August 2013), CCNA (in progress)