Computer Networks 2019-01

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Class Information

Class Info
Class ETA00010 - 컴퓨터네트워크, Computer Networks
Lecturer Seongjin Lee
Time and Place Theory: 407-202 Thursday 11:00-13:00
Practice: 407-202, Friday 13:00-14:00
Office Hour Thursday: 15:00-17:00
Contacts Office: 407-314
Email: insight at gnu dot ac dot kr


Course Introduction

Networking has enabled the mobile, cloud, and social networking, and introduced new paradigm to modern computing era. Advancement in networking technology is going to push the emergence of the Internet of Things, gigabit wireless networks, 5G Mobile technology further.

To become a player in the era of new network-enabled computing era, students must have a thorough understanding of networking concepts. In this lecture series, we will teach the basics of computer networks which are now considered as black box to let you build up on the technology and adopt to coming of new ideas.

The class will be organized into the following topics

  • Introduction to computer networks
  • Application layer
  • Transport layer
  • Network layer
  • Link layer
  • Wireless and Mobile Networks
  • Security
  • Multimedia Networking

Textbook

  • "Computer Networking: A Top-Down Approach ," JAMES F. KUROSE / KEITH W. ROSS 지음, Pearson (Translated version available)


Homework and Guidelines

  • Upload your homeworks to piazza


Schedule and Readings

Part I

Week 1 - Introduction
Lecture : Mar-07 (木) Introduction Lab : Mar-08 (金) Environment Setup
To Do:

* Introduction to the rest of the computer networks classes [w/ Blank pdf ] [w/o blank pdf ]
* Read Chapter 1

To Do:

* Typing Test I
* Short introduction to Vim and Emacs [pdf ]

Week 2 - Application Layer
Lecture : Mar-14 (木) Application Layer I Lab : Mar-15 (金) Web Server
To Do:

* Appliaction Layer I [w/ Blank pdf ] [w/o blank pdf ]
* Read Chapter 2- 2.3
* Worksheet [Ch02_app01.pdf ]

To Do:

* Install Wireshark and give it a try
* Simple web server and Client
* Read Chapter 2.7
* Lab: Traceroute [pdf ]

Video:

* Ch 2.1 Network Applications (15m) [watch]
* Ch 2.2 Web and HTTP (18m) [watch]
* Ch 2.3 Electronic Mail (14m) [watch]

Week 3 - Application Layer
Lecture : Mar-21 (木) Application Layer II Lab : Mar-22 (金) Web Server II
To Do:

* Appliaction Layer II (use the previous slide)
* Read Chapter 2.4-2.6
* Extra Reads [ BitTorrent ] [ SkyPe ]

To Do:

* Experiments with simple web server
* Lab: Wireshark [pdf ]

Video:

* Ch 2.4 DNS (17m) [watch]
* Ch 2.5 Torrent (15m) [watch]
* Ch 2.6 Video Streaming and Content Distribution (18m) [watch]

Week 4 - Application Layer
Lecture : Mar-28 (木) Application Layer Lab : Mar-29 (金) Web Server II cnt'd
Continued from the previous class
Week 5 - Transport Layer
Lecture : Apr-04 (木) Transport Layer I Lab : Apr-05 (金) Wireshark Lab
To Do:

* Transport Layer I [w/ Blank pdf ] [w/o blank pdf ]
* Read Chapter 3-3.4.2

To Do:

* Lab: Protocols and http [pdf ]

Video:

* Ch 3.1 Intro to Transport Layer (10m) [watch]
* Ch 3.2 Multiplexing and Demultiplexing (15m) [watch]
* Ch 3.3 Connectionless Transport: UDP (13m) [watch]
* Ch 3.4 Principles of Reliable Data Transfer [Part01 RDT to FSM v2.0 (14m)] [Part02 FSM v2.1 to v3.0 (17m)] [Part03 Go-Back-N (17m)] [Part03 Selective Repeat (9m)]

Week 6 - Transport Layer
Lecture : Apr-11 (木) Transport Layer II Lab : Apr-12 (金) Wireshark Lab
To Do:

* Transport Layer II (use the previous slide)
* Read Chapter 3.4.3 -3.7

To Do:

* Continue with Previous Lab

Video:

* Ch 3.5 Connection Oriented Transport:TCP [Part01 Segment Structure (13m)] [Part02 RTT & RDT (14m)] [Part03 RDT & Flow Control (9m)] [Part04 Flow Control & TCP Connection Management (13m)]
* Ch 3.6 [Principles of Congestion Control (9m)]
* Ch 3.7 [Part01 AIMD & Slow Start (12m)] [Part02 FSM & Throughput] [Part03 Fairness & Summary (13m)]

Week 7 - Network Layer
Lecture : 18-Apr (木) Network Layer - Data Plane Lab : 19-Apr (金) Data Plane
To Do:

* Network Layer - Data Plane [w/ Blank pdf ] [w/o blank pdf ]
* Read Chapter 4-4.3

To Do:

* Read Chapter 4.4
* Prepare for Exam
* Typing Test II

Video:

* Ch 4.1 [Overview of Network Layer(16m)]
* Ch 4.2 [Destination based forwarding(13m)] [Output port(12m)]
* Ch 4.3 [IP Format and Fragmentation(9m)] [Subnets and DHCP(16m)] [NAT and IPv6(15m)]

Week 8 - Midterm Exam
Lecture : 25-Apr (木) EXAM Lab : 26-Apr (金) No Class

Midterm Exam
* Exam covers from chapter 1 to 4
* 407-101

NO CLASS

Part II

Week 9 - Network Layer - Control Plane
Lecture : 02-May (木) Network Layer - Control Plane Lab : 03-May (金) Network Commands
To Do:

* Network Layer - Control Plane [w/ Blank pdf ] [w/o blank pdf ]
* Read Chapter 5.2, 5.3, 5.4

To Do:

* Lab: Commands for Network Analysis [pdf ]

Video:

* Ch 5.2 Routing Algorithm (9m) [watch]
* Ch 5.2.1 The Link State (LS) Routing Algorithm (15m) [watch]
* Ch 5.2.2 Bellman Ford Equation (5m) [watch]
* Ch 5.2.2 The Distance-Vector (DV) Routing Algorithm (16m) [watch]
* Ch 5.3 Intra-AS routing in the Internet: OSPF (12m) [watch]
* Ch 5.4 Routing among the ISPs: BGP (15m) [watch]

Week 10 - The Link Layer and LANs
Lecture : 09-May (木) The Link Layer and LANs Lab : 10-May (金) Network Commands cnt'd
To Do:

* The Link Layer and LANs
* Read Chapter 6.2-6.4

To Do:

* Lab: Commands for Network Analysis cnt'd
* Create a simple web server (Due June 6th)

Video:

* Ch 6.1 Introduction to the Link Layer (15m) [Watch]
* Ch 6.2 Error-Detection and -Correction Techniques (9m) [Watch]
* Ch 6.2.3 Cyclic Redundancy Check (CRC) (10m) [Watch]
* Ch 6.3 Multiple Access Links and Protocols (8m) [Watch]
* Ch 6.3.2 Random Access Protocols (13m) [Watch]
* Ch 6.3.3 Taking-Turns Protocols (4m) [Watch]
* Ch 6.4.1 Link-Layer Addressing ARP (10m) [Watch]


Week 11 - Wireless and Mobile Networks I
Lecture : 16-May (木) Wireless and Mobile Networks I Lab : 17-May (金) T.B.D
To Do:

* Wireless and Mobile Networks
* Read Chapter 7.1-.7.3

To Do:

* T.B.D

Week 12 - Wireless and Mobile Networks II
Lecture : 23-May (木) Wireless and Mobile Networks II Lab : 24-May (金) T.B.D
To Do:

* Wireless and Mobile Networks II
* Read Chapter 7.4-7.7

To Do:

* T.B.D

Week 13 - Security in Computer Networks
Lecture : 30-May (木) Security in Computer Networks Lab : 31-May (金) T.B.D
To Do:

* Security in Computer Networks
* Read Chapter 8.2 - 8.4, 8.7

To Do:

* T.B.D

Week 14 - Multimedia Networking
Lecture : 06-Jun (木) Multimedia Networking Lab : 07-Jun (金) T.B.D
To Do:

* Multimedia Networking
* Read Chapter 9.1-9.4

To Do:

* Prepare for Exam
* Final Typing Test III

Week 15 - Final Exam
Lecture : 13-Jun (木) Final Exam Lab : 14-Jun (金) No Class

Midterm Exam
* Exam covers from chapter 5 onwards
* 407-101

NO CLASS

Evaluation

Categories Ratio Categories Ratio
Attendance 20 Midterm 25
H/W & Projects 20 Final 25
Initiative (On/Offline participation) 10
Total 100%

Miscellaneous

Words Per Minute (WPM)

We are going to measure your typing score, please practice!! To install the typing speed measuring tool, follow the description below. 

   $ sudo pip install wpm
   $ wpm
   or
   $ pyton -m wpm
   You can load custom text to test
   $ wpm --load yourfile.txt

Download following example text 

   $ wget http://open.gnu.ac.kr/lecslides/2019-1-Networks/wpm/pp.txt 
   $ wpm --load pp.txt

emacs and vim configuration file (for your info)

download the following files 

   $ wget -O ~/.vimrc  http://open.gnu.ac.kr/lecslides/2019-1-Networks/wpm/vimrc 
   $ wget -O ~/.emacs  http://open.gnu.ac.kr/lecslides/2019-1-Networks/wpm/emacs

Attendance and other info

Translation Volunteer

The following students volunteered to translate the English version of PPT to Korean, and for that they will receive +10% of their final score.

  • Chapter 1: 김성헌
  • Chapter 2: 김태훈
  • Chapter 3: 김규리
  • Chapter 4: 오상권
  • Chapter 5: 정혜린
  • Chapter 6: 이주희
  • Chapter 7: 박준홍
  • Chapter 8: 이용호
  • Chapter 9: 김나리

Must review the work with the professor in every three weeks.

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