3.5 stars
I only read about half of this book. I also read it mostly for fun, without the intention of ever working in networks nor in anticipation of the CCNA / CCNP exam. For whatever its worth, the book confirmed that career choice.
Still, I credit the book for clarifying basic concepts, and its treatment of the OSI / TCPIP models is the most accessible I have come across. I also appreciated how it integrated its description of cables, hubs, bridges, switches, and routers within the OSI framework (which, in retrospect, should be obvious, but this isn't the first time I have learned this stuff).
The book is probably too basic for the serious student, but I recommend it to the casual reader or as a refresher.