Computer Networking and Management Lesson 1


Delay and Loss in Packet-Switched Networks



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Computer Networks and Internet - Overview
Delay and Loss in Packet-Switched Networks
Types of Delay
Comparing Transmission and Propagation Delay
Queuing Delay (Revisited)
Real Internet Delays and Routes
Protocol Layers and Their Service Models
Layer Functions
The Internet Protocol Stack, And Protocol Data
Units
Application Layer
Transport Layer
Network Layer
Link Layer
Physical Layer
Internet History
Development and Demonstration of Early Packet Switching Principles 1961-1972
Internetworking and New Proprietary Networks
1972-1980
Metcalfe’s Original Conception of the Ethernet
A Proliferation of Networks 1980 -Commercialization and the Web The 1990s
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Introduction
Computer Networking and Management
Page 1 of 44

This lesson provides abroad overview of the Computer Networking and the Internet. The lesson begins with an overview of the Internet and of networking protocols, introducing several key terms and concepts. We examine the 'edge' of a computer network, looking at the end systems and applications, and at the transport service provided to applications running of the end systems We also examine the 'core' of a computer network, examining the links and switches that transport data. We then take a broader view of networking. From a performance standpoint, we study the causes of packet delay and loss in computer network. We identify key architectural principles in networking, including layering and service models. We provide brief introduction history of computer networking. Finally, we provide a brief overview of ATM, a networking technology that provides an important contrast with Internet technologies.
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