The QOS Book by Wendell Odom is the best Exam Cert Guide I've read to date.  I highly recommend it.  In fact it's the one refuse to share at work.

I took the QoS test about 6 months after ONT too, so had a lot of overlap, but Wendell's book to me easily covered all of the QoS topics for both exams.
 

Thanks Lerdalt.

I will surely consider your recommendation. Just one thing before I go for it - has it got lab based scenarios and configuration examples.

Regards.

_______________________________________
Courage does not always roar. Sometimes, it is the quiet voice at the
end of the day saying, "I will try again tomorrow".
-- Anonymous  

^^Amazon.com will give you all your answers.

CCNP

I can't remember exactly.  I had lots of hands on experience with queuing and shaping.  I usually end up making my own labs up.  The one I did specifically for policing was easy.  2 routers with p2p t1 between them.  Setup a policy so that packets above a certain size were dropped.  Would then setup from windows 2 continuous ping sessions, one with regular size packets the other above what I set.  Would then watch the response times for both and see what happens.