Data Communication & Networks

Preface

Everything on your phone — every WhatsApp message, every video call, every EFTPOS payment — depends on networks. This term unpacks how those networks actually work: the signals inside a cable, the shapes of a LAN, the reason a router is different from a switch, the way an IP address gets a packet to the right computer, and why 'the cloud' is just someone else's server.

Each chapter opens with an essential question and clear learning objectives, teaches the ideas through short readings, then puts them to work with an activity and review questions. Key terms sit beside the text so you can find them quickly.