First of all this book is in question answer format , so it's better not to expect a textbook like experience. However the book has very rich content. Usually we don't study seriously in final semester and hence this book is very helpful for 60% preparation in just 5 days or so.
PROS:-
1). Very rich content.
2).Good print quality.
3).Helpful in emergency situation.Can score decent marks by just studying 3-4 days.

CONS.
1).Not for serious students.The name itself suggests, "Express Learning"...

Book is good and always help full for understanding concepts

Good one. U can easily get the summary of network security. For beginner this is the best.

Great book, must read this, fast delivary by flipkart! But a little problem is binding, however the content is fantabulous. Must read i! Buy it now!

I need a book on cryptography.This book serves my need. Short notes and definition helps to understand topics easily.