Computer Networking - Chapter 1: Introduction

Computer Networking - Chapter 1: Introduction's Overview is what’s the Internet? what’s a protocol? network edge; hosts, access net, physical media; network core; performance; security; protocol layers, service models. | Chapter 1 Introduction A note on the use of these ppt slides: We’re making these slides freely available to all (faculty, students, readers). They’re in PowerPoint form so you can add, modify, and delete slides (including this one) and slide content to suit your needs. They obviously represent a lot of work on our part. In return for use, we only ask the following: If you use these slides (., in a class) in substantially unaltered form, that you mention their source (after all, we’d like people to use our book!) If you post any slides in substantially unaltered form on a www site, that you note that they are adapted from (or perhaps identical to) our slides, and note our copyright of this material. Computer Networking: A Top Down Approach , 4th edition. Jim Kurose, Keith Ross Addison-Wesley, July 2007. Thanks and enjoy! JFK/KWR All material copyright 1996-2007 Kurose and . Ross, All Rights Reserved Introduction 1-1 Chapter 1: Introduction Our goal: Overview: get “feel” and what’s the Internet? terminology more depth, detail later in course approach: use Internet as example what’s a protocol? network edge; hosts, access net, physical media network core: packet/circuit switching, Internet structure performance: loss, delay, throughput security protocol layers, service models history Introduction 1-2 Chapter 1: roadmap What is the Internet? Network edge end systems, access networks, links Network core circuit switching, packet switching, network structure Delay, loss and throughput in packet-switched networks Protocol layers, service models Networks under attack: security History Introduction 1-3 What’s the Internet: “nuts and bolts” view millions of connected PC computing devices: server hosts = end systems running network apps communication links wireless laptop cellular handheld fiber, copper, radio, satellite transmission rate = bandwidth routers: .

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