Within 24 hours after a lecture is over, I will post the lecture slides I used in the section below. For a preview of future lectures, please see the tentative slides section below.

To download all the PDF files below in one command (so you can study for exams), do the following inside a terminal in Ubuntu 16.04: 

    wget -r -l 1 --user=USERID --password=PASSWORD http://merlot.usc.edu/cs353-s21/lectures.html
where USERID and PASSWORD are the user ID and password used to access protected content from our class web site. But please note that the lecture slides can change at any time without notice. Therefore, it's a good idea to re-run the above command often to synchroniza your copy with the server!
 
Videos & PDF Lecture Slides
(Please note that access to lecture notes and videos is restricted.)
Week 0 Lecture 1 (PDF) (for Jan 15, 2021) - course administration
Week 1 Lab 1 (PDF)

(Jan 18, 2021) - Martin Luther King Day, university holiday, no lecture video (or live lecture)

Lecture 2 (PDF) (for Jan 20, 2021) - pa1
Week 2 Lecture 3 (PDF) (for Jan 25, 2021) - pa1 Lab 2 (PDF) - this video assumes that you have finished watching all the pa1 videos (i.e., Lecture 2 and Lecture 3) Lecture 4 (PDF) (for Jan 27, 2021) - socket programming
Week 3 Lab 3 (PDF) - this video assumes that you have finished watching all the socket programming videos (i.e., Lecture 4) Lecture 5 (PDF) (for Feb 1, 2021) - pa2 (this video assumes that you have finished watching Lab 3 videos Lecture 6 (PDF) (for Feb 3, 2021) - what is the Internet (1.1), the network edge (1.2)
Week 4 Lab 4 (PDF) - this video assumes that you have finished watching PA2 videos (i.e., Lecture 5) Lecture 7 (PDF) (for Feb 8, 2021) - the network core (1.3) Lecture 8 (PDF) (for Feb 10, 2021) - delay, loss, throughput (1.4), protocol layers, service models (1.5), network under attack (1.6)
Week 5 Lab 5 (PDF)

(Feb 15, 2021) - Presidents' Day, university holiday, no lecture video (or live lecture)

Lecture 9 (PDF) (for Feb 17, 2021) - history of Internet (1.7), multithreading parts 1 & 2
Week 6 Lab 6 (PDF) - this video assumes that you have finished watching multithreading parts 1 & 2 videos (i.e., Lecture 9 and the first half of Lecture 10) Lecture 10 (PDF) (for Feb 22, 2021) - multithreading part 2, multithreading part 3 (mutex) Lecture 11 (PDF) (for Feb 24, 2021) - multithreading part 3 (mutex), principles of network applications (2.1), the web and HTTP (2.2)
Week 7 Lab 7 (PDF) - this video assumes that you have finished watching multithreading part 3 videos (i.e., Lecture 10 and the beginning of Lecture 11) Lecture 12 (PDF) (for Mar 1, 2021) - the web and HTTP (2.2), electronic mail in the Internet (2.3) Lecture 13 (PDF) (for Mar 3, 2021) - electronic mail in the Internet (2.3), DNS (2.4), peer-to-peer applications (2.5)
Week 8 Lecture 14 (PDF) (for Mar 8, 2021) - peer-to-peer applications (2.5), video streaming and conent distribution networks (2.6), socket programming (2.7) Lab 8 (PDF) Lecture 15 (PDF) (for Mar 10, 2021) - pa3, multithreading part 4 (generalized synchronization with condition variables), introduction and transport-layer services (3.1), multiplexing and demultiplexing (3.2), connectionless transport: UDP (3.3)
Week 9

(Mar 15, 2021) - midterm exam (40 minutes), no live lecture

Lecture 16 (PDF) (for Mar 15, 2021) - connectionless transport: UDP (3.3), principles of reliable data transfer (3.4) Lab 9 (PDF) - this video assumes that you have finished watching multithreading part 3 videos (i.e., Lecture 10 and the beginning of Lecture 11) Lecture 17 (PDF) (for Mar 17, 2021) - principles of reliable data transfer (3.4)
Week 10 Lab 10 (PDF) Lecture 18 (PDF) (for Mar 22, 2021) - connection-oriented transport: TCP (3.5) Lecture 19 (PDF) (for Mar 24, 2021) - principles of congestion control (3.6), TCP congestion control (3.7)
Week 11 Lab 11 (PDF) Lecture 20 (PDF) (for Mar 29, 2021) - overview of network layer (4.1), what's inside a router (4.2) Lecture 21 (PDF) (for Mar 31, 2021) - the Internet protocol (IP): IPv4, addressing, IPv6, and more (4.3), generalized forwarding and SDN (4.4)
Week 12 PA4 (PDF) Lab 12 (PDF) - this video assumes that you are familiar with the principles of reliable data transfer (3.4) covered in Lecture 16 Lecture 22 (PDF) (for Apr 5, 2021) - introduction to the network control plane (5.1), routing algorithms (5.2)

(Apr 7, 2021) - Wellness Day, university holiday, no lecture video (or live lecture)
Week 13 Lab 13 (PDF) Lecture 23 (PDF) (for Apr 12, 2021) - routing algorithms (5.2), intra-AS routing in the Internet: OSPF (5.3) Lecture 24 (PDF) (for Apr 14, 2021) - routing among the ISPs: BGP (5.4), the SDN control plane (5.5), ICMP: the Internet control message protocol (5.6), network management and SNMP (5.7)
Week 14 Lab 14 (PDF) - this video assumes that you are familiar with rdt-3.0 covered in Lecture 17 Lecture 25 (PDF) (for Apr 19, 2021) - introduction to the link layer (6.1), error-detection and correction techniques (6.2), multiple access links and protocols (6.3) Lecture 26 (PDF) (for Apr 21, 2021) - multiple access links and protocols (6.3), introduction wireless and mobile networks (7.1), wireless links and network characteristics (7.2)
Week 15 PA5 (PDF) Lecture 27 (PDF) (for Apr 26, 2021) - wireless links and network characteristics (7.2), wifi: 802.11 wireless LANs (7.3) Lecture 28 (PDF) (for Apr 28, 2021) - switched local area networks (6.4), link virtualization: a network as a link layer (6.5), data center networking (6.6), retrospective: a day in the life of a web page request (6.7)

Preview:

  • Lecture 27 video will cover wireless links and network characteristics (7.2), wifi: 802.11 wireless LANs (7.3). You can get a preview by looking at slides from Spring 2020.
  • (May 7, 2021) - final exam, 11am - 1:00pm (firm)
Tentative Slides
The following are tentative slides (in PDF format) for this semester.
Rough Schedule (subject to change without notice)
NOTE: This class is not designed to cover all the chapters of the textbook. The focus is Ch 1 through Ch 7. So, the stuff towards the bottom is very very tentative.
Week # Dates Topics Comments
0 1/15 course administration  
1 1/18
1/20		 MLK Holiday (no class)
lab1, pa1, socket programming		  
2 1/25&1/27 lab2, socket programming  
3 2/1&2/3 lab3, pa2, Computer Networks and the Internet (Ch 1) (PA1 due on Friday)
4 2/8&2/10 lab4, Computer Networks and the Internet (Ch 1)  
5 2/15
2/17		 Presidents' Day Holiday (no class)
lab5, Computer Networks and the Internet (Ch 1), multithreading parts 1 & 2		  
6 2/22&2/24 lab6, multithreading part 3, Application Layer (Ch 2) (PA2 due on Friday)
7 3/1&3/3 lab7, Application Layer (Ch 2)  
8 3/8&3/10 lab8, pa3, multithreading part 4, Transport Layer (Ch 3)  
9 3/15
3/17		 midterm exam
lab9, Transport Layer (Ch 3)		 (PA3 due on Friday)
10 3/22&3/24 lab10, pa4, Transport Layer (Ch 3)  
11 3/29&3/31 lab11, The Network Layer: Data Plane (Ch 4)  
12 4/5
4/7		 lab12, The Network Layer: Data Plane (Ch 4), The Network Layer: Control Plane (Ch 5)
Wellness Day (no class)		  
(PA4 due on Friday)
13 4/12&4/14 lab13, The Network Layer: Control Plane (Ch 5)  
14 4/19&4/21 lab14, pa5, The Network Layer: Control Plane (Ch 5), The Link Layer and LANs (Ch 6)  
15 4/26&4/28 The Link Layer and LANs (Ch 6), Wireless and Mobile Networks (Ch 7) (PA5 due on Saturday)