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Fundamental Concepts
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$29.00
$39.00
About the Book
Modern networks like the Internet, explained as simply as possible — but no simpler.
This book lays the essential groundwork for understanding modern computer networks, including the Internet. Whether you’re a professional or a tech-savvy reader who simply wants to demystify networks, it will give you a clear and accessible introduction to the fundamental concepts — the concepts one must grasp to understand the topic as a whole.
“Finally, a networking guide that respects the reader. Sharp, structured, and packed with memorable metaphors that make learning effortless.”
— Gerry Siegemund, Global Head of Optimization and Management, Secunet (Germany's leading Cybersecurity Company)
“I didn't expect a book about computer networks to be that entertaining. A masterpiece of understandable knowledge transfer.”
— Lennart Graewe, Chemist
“A different kind of introduction to networking - exceptionally thoughtful and accessible. Highly recommended for students, software developers, young engineers, and anyone looking to unravel the depth of networking fundamentals without getting lost in jargon or dry theory.”
— Kevin Sandermann, Director Cloud & DevOps, CGI
Those who have previous exposure but feel some of the dots don't yet connect (e.g., software developers, system administrators, and computer science students) should feel particularly at home.
It deliberately keeps code and configuration listings to a minimum, preferring instead more intuitive, easily understandable explanations and analogies, without sacrificing clarity in the process.
If you’re planning on diving into the follow-up volume Modern Networking - Software and Techniques, which will focus on more advanced, hands-on techniques, code samples, and troubleshooting recipes, this first volume will provide the conceptual background you need to confidently apply those practical skills, and understand what is (or must be) happening behind the scenes, rather than simply following instructions blindly. Even if you are not, this book provides valuable insights into the networks that underpin our digital world.
About the Author
Declan is a graduate of the University of Cambridge with a doctorate in Theoretical Physics. He is a self-taught software consultant with over a quarter of a century of experience with various organizations and companies including Avis, Lufthansa, Airbus, and the European Space Agency. Passionate about learning, he also has his own educational software company
Reader Testimonials
Finally, a networking guide that respects the reader. Sharp, structured, and packed with memorable metaphors that make learning effortless.

I didn't expect a book about computer networks to be that entertaining. A masterpiece of understandable knowledge transfer.

Complex topics accessible through simple examples. A comprehensive and valuable resource for both newcomers and experienced practitioners.

A different kind of introduction to networking - exceptionally thoughtful and accessible, this book demystifies and breaks down complex concepts using tangible analogies and an engaging, conversational tone. I’d highly recommend it to students, software developers, young engineers, and anyone looking to unravel the depth of networking fundamentals without getting lost in jargon or dry theory.

Declan takes the often daunting world of networking and makes it feel surprisingly approachable in this book. His use of analogies such as concerts, football teams, and everyday experiences, really helps ground abstract concepts. It offered a real glimpse into a world I’d never quite understood before.

This book strives to present complex concepts as simply as possible – but no simpler. I would say without hesitation: mission accomplished. Although the technical level is high and I admit that I am not an expert on networks, I was able to follow the explanations in the book well.

The beauty of this book is the charming way it transforms the dense jungle of misunderstandings about networking into an orderly farm where you know every chicken by name, while it makes you want to (re)read Caroll's stories about Alice.

The author explains complex concepts like network layers, IP addresses, and security in a practical and understandable way, with comparisons that are easy to relate to. He conveys technical fundamentals in detail, but in a beginner-friendly manner, without getting lost in technical jargon.

Well-written and well-explained book that I can highly recommend to anyone who wants to gain a solid understanding of networking. The analogies used throughout the book are fantastic. Definite recommendation!

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