Chapter 1. Packet-Switched Networks

Computer and communication networks to provide a wide range of services, from simple networks of computers to remote-file access, digital libraries, videoconferencing, and networking billions of users and devices. Before exploring the world of computer and communication networks, we need to study the fundamentals of packet-switched networks as the first step. Packet-switched networks are the backbone of the data communication infrastructure. Therefore, our focus in this chapter is on the big picture and the conceptual aspects of this backbone:

Basic definitions in data networks

Types of packet-switched networks

Packet size and optimizations

We start with the basic definitions and fundamental concepts, ...

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