Michael G. Solomon - Fundamentals of Communications and Networking

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Brief Contents

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Contents

I want to thank God for blessing me so richly with such a wonderful family, and for my familys support throughout the years. My best friend and wife of over three decades, Stacey, is my biggest cheerleader and supporter through many professional and academic endeavors. I would not be who I am without her.

And both our sons have always been sources of support and inspiration. To Noah, who still challenges me, keeps me sharp, and tries to keep me relevant; and Isaac, who left us far too early. We miss you, son.
Michael G. Solomon

I dedicate this book to my twin-flame soulmate MiYoung Kim. No matter where our life journey takes us, I will always be waiting for you at the heaven train station (since you have my ticket)!
David Kim

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Preface

Purpose of this Book

This book is part of the Information Systems Security & Assurance Series from Jones & Bartlett Learning (www.jblearning.com). Designed for courses and curricula in IT Security, Cybersecurity, Information Assurance, and Information Systems Security, this series features a comprehensive, consistent treatment of the most current thinking and trends in this critical subject area. These titles deliver fundamental information security principles packed with real-world applications and examples. Authored by Certified Information Systems Security Professionals (CISSPs), they deliver comprehensive information on all aspects of information security. Reviewed word for word by leading technical experts in the field, these books are not only current but also forward-thinkingputting you in the position to solve the cybersecurity challenges not just of today but of tomorrow as well.

This book is a resource for understanding todays networks and the way they support the evolving requirements of different types of organizations. Networks have long been regarded as methods to connect resources. While this is still the case, todays networks are required to support an increasing array of real-time communication methods. Video chat, real-time messaging, and always-connected resources put demands on networks that were previously unimagined. Networks must respond to user requests in ways that require sub-second round-trip times. Such demands mean that network designers must rethink how they set up topologies or network layouts. Reliance on higher-layer flexibility is not sufficient. Performance often rises above flexibility in design priority.

Part 1 of the text covers the critical issues of designing a network that will meet an organizations performance needs. You will learn about how businesses use networks to solve business problemsnot just technical problems. Todays networks must not only be technically proficient but they must also perform to a degree that they support an organizations ability to conduct operations as effectively as possible.

In Part 2, you will read about network basics and how to build functionality to support business demands. The focus of the topics is both on the technology and how the technology meets business goals. A functional network allows an organization to meet its goalsregardless of the technology it employs. You will learn how to choose what works for your organization. This text is organized to describe the basics of how networks work, how they support increasing demands of advanced communications, and how to map the right technology to the organizations needs.

Building a network is a great challenge. Once everything is up and running, keeping that network running smoothly is a new challenge. In Part 3 of this book, you will read about managing networks, keeping them secure, and responding when incidents occur.