Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good but not excellent

If ure just breaking in the networking field then i would suggest u to purchase this book. Everything is written in easy to understand language and book covers a networking basics. Like other books related to networking this book contains few serious errors as well but if u read the material carefully, u will spot them ;) and if u will spot the mistakes, u know that u understand the material ;)All in all, this book boosted my efficiency at work sooo much, so i give to it 4 pings out of 5:!.!!!