Bought the wrong book, Valuable resource?

FuturaFutura Member Posts: 191
Just looked on the website and the current CCNA Voice exam is 640-461 ICOMM

But the book I have bought is this:
[h=3]CCNA Voice Study Guide: Exam 640-460 by Andrew Froehlich[/h]
absolutely gutted,

Does anyone know if this is still a valuable resource?


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