Hello all,
I'm a junior IT professional looking to gain some experience, insight and clout through some MS certs... thus why I'm here.

I was reading over Sybex's book on exam 70-640, the Windows Server 2008 Active Directory Configuration Study Guide, and was sort of shocked at the sparseness of what was covered in chapter 6 regarding different AD server roles. I'm very familiar with AD as is but work at a smaller company which doesn't even use these features.
My question is, how thoroughly covered are these concepts on the exams? Should I look for complementary material to add onto this already great book? For reference, the roles in this chapter cover AD LDS, AD RMS and AD FS.