Author Profile

Alfred Wilkinson is a distinguished computer scientist, educator, and industry consultant with over two decades of experience in the fields of telecommunications and distributed systems. He holds a Ph.D. in Computer Science from the Massachusetts Institute of Technology (MIT), where his doctoral research focused on high-speed network architectures and adaptive routing protocols. Prior to his doctorate, he earned his Master of Science in Electrical Engineering from Stanford University, specializing in digital communication theory and signal processing. Dr. Wilkinson’s professional journey bridges the gap between groundbreaking academic research and practical, real-world engineering. Early in his career, he worked as a Senior Network Architect at Bell Labs, where he contributed to the foundational design of early broadband wireless protocols and scalable packet-switching technologies. His industry insights are backed by multiple patents in network congestion control and data encoding optimization. Transitioning into academia, Dr. Wilkinson served as a professor and chair of the Department of Computer Engineering at a top-tier research university. Recognized for his ability to translate highly abstract concepts into intuitive, accessible lessons, he has received numerous "Teacher of the Year" accolades. He is also a frequent keynote speaker at global tech conferences and serves as a technical advisor for several enterprise networking firms and standards committees.

About The Book

Essentially, data communication is all about exchanging information between two or more machines. But it's not just a question of sending it's a matter of sending the right data, to the right machine, in the right format. And that's the brilliance of networking basics. This book does not merely explain how computers talk to one another; it acts as an architectural blueprint for the invisible, sprawling web of wires, waves, and protocols that powers our global civilization. What makes this book exceptionally powerful is its pedagogical philosophy. Networking is notoriously difficult to teach because it demands that a student understand both the physical reality of a copper wire and the abstract complexity of a software application simultaneously. This text solves this by adopting a "bottom-up" approach. The book begins at the very bedrock of communication, the Physical Layer explaining how data transforms into analog and digital signals, how electromagnetic waves propagate through fiber optics, and how noise and attenuation corrupt data. Once the physical foundation is solid, the book systematically climbs the architecture of the TCP/IP protocol suite and the classic 7-layer OSI model. By the time you reach the top, you do not just know what a protocol is; you understand the exact historical and engineering necessities that forced it into existence. Data Communications and Networking is more than a standard university textbook; it is a profound tribute to human ingenuity. It documents the collective triumph of the scientists and engineers who took a planet divided by geography and bound it together into a single, real-time interconnected nervous system. To read it is to understand the language of the modern world.

Table of Contents

Preface
Chapter 1. Fundamentals of Data Communications
Concepts and Components of Data Communication
Data Representation and Data Flow
Transmission Modes and Types
Signal Encoding and Modulation
Bandwidth, Throughput, and Latency
Transmission Impairments
Performance Metrics and Evaluation
Applications of Data Communication
Chapter 2. Transmission Media and Technologies
Guided Transmission Media
Unguided Transmission Media
Switching Techniques
Circuit, Packet, and Message Switching
Multiplexing Techniques
Error Detection and Correction
Flow Control Mechanisms
High-Speed Transmission Technologies
Chapter 3. Network Models and Architecture
Network Architecture Overview
OSI Reference Model
TCP/IP Protocol Suite
Functions of Network Layers
Network Topologies
Network Design Considerations
Network Devices and Components
Layered Communication Principles
Chapter 4. Data Link Layer Protocols
Services Provided by Data Link Layer
Framing Techniques
Error Control Protocols
Flow Control Protocols
Multiple Access Protocols
LAN Protocols
Ethernet Technologies
Data Link Layer Performance
Chapter 5. Network Layer and Routing
Network Layer Services
Logical Addressing
Internet Protocol
Routing Algorithms
Routing Protocols
Congestion Control
Quality of Service
Network Layer Security
Chapter 6. Transport Layer Protocols
Transport Layer Services
Process-to-Process Communication
User Datagram Protocol
Transmission Control Protocol
Flow and Congestion Control
Error Handling Mechanisms
Performance Issues in Transport Layer
Transport Layer Security
Chapter 7. Application Layer Protocols
Application Layer Overview
Domain Name System
File Transfer Protocols
Electronic Mail Protocols
Web and HTTP Protocols
Multimedia Applications
Peer-to-Peer Applications
Application Layer Security
Chapter 8. Wireless and Mobile Networks
Principles of Wireless Communication
Wireless LAN Technologies
Cellular Network Architecture
Mobile IP
Ad Hoc and Sensor Networks
Wireless Network Security
Quality of Service in Wireless Networks
Emerging Wireless Technologies
Chapter 9. Network Security and Management
Security Threats and Attacks
Cryptography for Network Security
Firewalls and Intrusion Detection
Secure Network Protocols
Network Monitoring and Management
Fault and Configuration Management
Performance and Accounting Management
Network Management Tools
Bibliography
Index