Networking Lecture 01 - Introduction

Outline:
0:08 Why take Computer Networking?
4:15 Required reading
4:45 A Quick Overview of the Internet
5:33 How does the Internet work?
8:20 What is the Internet?
11:29 Who controls the Internet?
21:48 The Internet != The Web
24:36 The Internet is distributed and loosely coupled
27:29 Human protocols
30:28 The Internet – in practice
32:45 Human protocols
32:48 The Internet – in practice
33:01 Access networks and local-area networks
34:12 Public Switched Telephone Network (PSTN)
38:45 Home Internet access uses old networks
41:23 Connecting to the Internet in the 1990s
44:41 Digital Subscriber Line (DSL)
46:26 Cable Networks
46:27 Frequency Division Multiplexing
46:28 Cable Networks
47:14 Frequency Division Multiplexing
47:38 Network was originally designed for one-way broadcast...
47:46 A way to share a single communication medium
47:49 Modern wired/guided media
50:38 Radio is a wireless/unguided medium
56:24 A look at the network core
56:27 Circuit Switching was used in the PSTN
1:00:26 Circuit switched backbone links are multiplexed
1:02:05 Computer networks use Packet Switching
1:05:08 Packet vs Circuit switching
1:06:24 Network performance metrics
1:08:44 Network performance is constantly changing!
1:11:33 Cumulative distribution function (CDF)
1:12:09 Network performance experiment
1:15:16 Recap: Internet Overview

These lectures were delivered by Professor Steve Tarzia in Fall 2020 for the CS-340 Introduction to Computer Networking course at Northwestern University. Course materials and slides can be downloaded from https://stevetarzia.com/teaching