Express Learning - Data Communications and Computer Networks  (English, Paperback, ITL Education Solutions Limited)

The concepts are present systematically chapter wise from the very first.The question answer format makes it a great system to study so the student can understand the key things.When it comes to prep for exams,this book has a great potential.Things are explained diagrammatically where it is most needed.
Flipkart does ok job for delivery.

excellent book if youbhave covered the topic already and want a book for revision and for guidance to writing the answers in a compact way....not an alternative to data communication but a valuable asset none the less

Best book in data communication in question and answer format