Excellent book for CCNAB. Covers all the material in depth and very well. Cisco Press also includes a version of NetSim from [website]with is awesome.
The depth of this book is probably more that what will be needed to pass the CCNAB, but I think that is great. To many books focus on passing the test instead of teaching the material. This is noteworthy exception to that trend.
The diagrams are clear and accurate and the labs are surprisingly challenging, unlike other simplistic labs on the markets.
Overall, this book gets a strong recommendation from me.