CS447 Networks and Data Communications
Summer 2026

This is the home of CS447 Computer Networks, Summer 2026

Instructor: Dr. Hiroshi Fujinoki
Office: EB 2067
Office Phone: 650-3727
E-mail: hfujino@siue.edu
Instructor's HP: www.siue.edu/~hfujino
Notice: when you are sending me e-mail, please specify "CS447" in the subject field of your e-mail.

Office Hours:

(a) By online meetings: by appointment (should be made 24 hours in advance or the office hours will be made available based on the best-effort basis).


(b) By emails: anytime (the worst-case turn-around time: 24 hours (except for weekends/holidays and during Fujinoki’s conference presentation week) – for easy/simple questions.


Note: The above office hour schedules do not apply to the final exam week and the week before the final exam week.

For any non-urgent issues, please try to drop by my office during my office hours.

Class Meeting Room: On-line Class Meeting Days: T and R
Class Meeting Time: 11:00 a.m. - 1:40 p.m. (for T and R)

Required textbook:

Title: Computer Networking: A Top-Down Approach, Addison-Wesley Data and Computer Communications
Edition: Eighth Edition
Authors: James F. Kurose and Keith W. Ross

Course Objectives:

This course is an undergraduate level introduction to computer networks. There are three primary objectives in this course. The first objective is to acquire fundamental knowledge about underlying mechanisms in today's computer networks. The second objective is to become proficient in essential network programming technique using socket interface with TCP/IP through programming projects. The third objective is to be familiar with theoretical methods to analyze system performance of various aspects in today's computer networks.

Course Syllabus:

Course Syllabus is available here (MS Word version).

Course Project:

To be announced in the class.

Reference books for our project:

(1) For Win-32 Environment:
Title: Programming Winsock/Book and Disk
Edition: N.A.
ASIN: 0672305941

Author: Arthur Dumas
Publisher: SAMS Publishing (http://www.samspublishing.com)
You can buy a used-copy from Amazon.com.

Editorial Reviews (Quoted from amazon.com):

This tutorial provides coverage of the WinSock Library, which is one of several Windows Open Services Architecture (WOSA) standards being used to add TCP/IP connectivity to applications. "Disk includes source code, 16-bit and 32-bit executable programs, and shareware programs. All major vendors of TCP/IP protocol stacks for Windows 3.1 use WinSock. Shows how the WinSock Library makes software programs network aware". Covers Version 1.1 for Windows 3.11 & Windows NT.

(2) For UNIX Environment:
Title: UNIX Network Programming
Edition: 1st edition (January 23, 1990)
ISBN: 0139498761

Author: W. Richard Stevens
Publisher: Prentice Hall (URL: www.prenhall.com/stallings)
You can buy a used-copy from Amazon.com.

Focuses on design, development, and coding of networking software under the UNIX operating system. Begins by showing that a fundamental basic for networking programming is inter-process communication (IPC), and a requisite for understanding IPC is a knowledge of what constitutes a process. Throughout, the text provides both description and examples of how and why a particular solution is implemented.

The above two books will be available at the library.

Helpful hints to avoid plagiarism:

Here is a list of links to SIUE's definition for plagiarism (I got this in an e-mail from SIUE). Prevention is always better than cure. Please everyone take a look.

• Page 1.
  
• Page 2.
  

How to contact the instructor?

There are two ways to contact Dr. Fujinoki:

(1) Through e-mail: You can contact the instructor by e-mail. E-mail: hfujino@siue.edu
(2) Drop-by during the office hours.
(3) By appointment (please send e-mail to Dr. Fujinoki).

Notice: The subjects covered in each semester were different. Some of the questions that appear in the past exams may not appear, while some other questions that did not appear in the past exams could appear. Use your own judgement.

Notice: The subjects covered in each semester were different. Some of the questions that appear in the past quizzes may not appear this semester, while some other questions that did not appear in the past quizzes could appear. Every student is responsible for reviewing and studying the subjects covered in this semester. The instructor will NOT loan the instructor's lecture note to anyone in the classroom.

Textbook Reading List:

Textbook Reading List (MS Word version).

Weekly Notices:

Final Exam Week:

(3) Project #2 grades
(2) Homework #6 grades
(1) HW #6 solutions

Week 8:

Lecture #1 - 7/28 (lecture note)


(2) the course grades
(1) Quiz #6 grades


7/27:


(3) Quiz #6 solutions
(2) the suggested solutions for EXERCISE #1 and #2 (the execises on July 16th) (MS Word vesion).
(1) About the final exam scheduled on Thursday:


• Everyone should activate your PC camera while you are taking the final exam (not just activate your camera, make sure you appear in front of your camera).
• The final exam questions are those that measure your understanding of the topics we discussed in this course – I will create some new questions (by modifying the exercise questions, or by creating new questions) based on what we discussed in this course.
• The final exam is an individual exam (any communication with anyone else is prohibited during the exam, including any search activities using the Internet).

Week 7:

Lecture #2 - 7/23 (lecture note)


(2) Quiz #6 is schedule today (7/23).
(1) Homwork #6 submission due has been postoned to 11:00 a.m. on 7/28 (Tuesday).


7/22:


(2) Here are the follow-up descriptions for "the root CAs" and the chain of the trust by CAs (MS Word vesion).
(1) the suggested solutions for Quiz #6 sample questions (MS Word vesion).


Lecture #1 - 7/21 (lecture note)


(6) the PPT slides for the Binary-Exponential Back-off algorithm
(5) the PPT slides for the medium-access control for LANs
(4) Homework #5 solutions (MS Word vesion).
(3) Quiz #5 solutions
(2) Homework #5 grades
(1) Quiz #5 grades

Week 6:

Lecture #2 - 7/16 (lecture note)


(3) Exercise Questions on 7/16 (MS Word vesion).
(2) Quiz #6 sample questions (MS Word vesion).
(1) the PPT slides for network security fundamentals


Lecture #1 - 7/14 (lecture note):


(4) Exercise Questions on 7/14 (MS Word vesion).
(3) PPT slides for TCP flow-control.
(2) PPT sldes for Cyclic Redundancy Check error detection.
(1) the PPT slides for non-detectable errors in parity error detection

Week 5:

7/12:


(5) Homework #4 solutions (MS Word vesion).
(4) Quiz #4 solutions
(3) Homework #2 solutions (MS Word vesion).
(2) Homework #4 grades
(1) Quiz #4 grades


7/10:


(2) Homework #3 solutions (MS Word vesion).
(1) Homework #3 grades (updated 1:52 p.m., 7/13)


Lecture #2 - 7/9 (lecture note):


(4) Quiz #5 sample questions (MS Word vesion).
(3) Exercise Questions on 7/9 (MS Word vesion).
(2) PPT sldes for pality-bit error detection.
(1) Homework #3 grades (updated 8:13 a.m.)


Lecture #1 - 7/7 (lecture note):

(8) our discussion on QUESTION #3 (Homework #4)
(7) sample quiz #4 questions (updated) (MS Word vesion).
(6) Homework #3 grades
(5) Quiz #3 solutions
(4) Quiz #3 grades
(3) Project #2 resouces:


• HTTP protocol overview
• the dummy web site files
• the 403 file
• the required server (test_server.cpp)
• Poject #2 multi-thread structure
• Win-32 multi-thread base

(2) Poject #2 specification (MS Word vesion).
(1) the updated Project #1 grades.

Week 4:

Lecture #2 - 7/02 (lecture note):

(6) Quiz #4 is postponed to 7/9 (Thursday).
(5) Homework #4 due is postponed to 7/9 (Thursday).
(4) PPT slides for ARQ performance analuses.
(3) PPT slides for GBN-ARQ (Automatic Retransmissuon reQuest).
(2) Exercise Questions on 7/2 (MS Word vesion).
(1) PPT slides for ARQ (Automatic Retransmissuon reQuest).


Lecture #1 - 6/30 (lecture note):

(7) Exercise Questions on 6/23 (MS Word vesion).
(6) PPT slides for TCP flow-control (slow-start & liner-growth.
(5) PPT slides for flow-control.
(4) Project #1 grades
(3) Homework #2 grades (updated 1:54 p.m., 7/13)
(2) Quiz #2 solutions
(1) Quiz #2 grades

Week 3:

Lecture #2 - 6/25 (lecture note):

(1) Homework #3 questions (MS Word vesion).


Lecture #1 - 6/23 (lecture note):

(3) Quiz #3 *sample* questions (MS Word vesion).
(2) PPT slides for IP subnet and subnet masks.
(1) Quiz #1 solutions

Week 2:

6/20:

(3) Teams recording of Project #1 introduction
(2) Homework #1 grades

• There were a few solutions that were hard to read (those in hand-writing - did not earn credit because of the diffriculty). If you suspect that you lost credit because of the difficulty, I suggdest you to contact Dr. Fujinoki

(1) Quiz #1 grades


Lecture #2 - 6/18 (lecture note):
(4) PPT slides for IP address.
(3) PPT slides for MAC address and IP address collaboration.
(2) Exercise Questions on 6/16 (MS Word vesion).
(1) PPT slides for ARP.


Lecture #1 - 6/16 (lecture note):
(2) PPT slides for more about sockaddr_in structure.
(1) PPT slides for winsock tutorial for Project #1.

• server screenshot
• client screenshot

Week 1:

Lecture #2 - 6/11:
(7) I received a question about Question #3 in Homework #1 to clarify what is required for the answer to the question. I added a few words to make the question clear to everyone:

"After the following four activities (in that order – (a) happened first, (b) second, and after (d) happened), show the contents of the table (after the initial state)".

The QUESTION #3 is updated in Homework #1 (MS Word vesion).


(6) The first lecture recording (i.e., "PART I") for 6/11 (CS447_week_01_part_03.mp4) describes Quiz #1 and Homework #1 questions in CS447 Summer 2025. Different questions will/can be asked in Quiz #1 and Homework #1 this semester.


(5) Here are Project #1 descriptions and the requirements (MS Word vdersion) - for those who would like to start working on the project sooner.


• the required client process

(4) The followings are the two required recorded lectures (from CS447 Summer 2025):

• PART I: this lecture describes Quiz #1 and Homework #1 questions (you can skip 36:25 through 50:41)
• PART II: this lecture introduces local area networks (repeaters, bridges/switches, routers, and traffic localization by bridges)

(3) Here are the PPT slides for Local Area Network architecture.
(2) Here are the PPT slides for packet encapsulation.
(1) Here are the PPT slides for network protocols.


Lecture #1 - 6/9 (lecture note):
(4) Here is the the quiz solution submission template (to be used for all quizzes).
(3) Here are the PPT slides for switching networks.
(2) Here are the PPT slides for full-mesh and switching networks.
(1) Here are the PPT slides for the course introduction.

Last updated at 9:31 a.m., August 3, 2026.