Introduction to Computer Networks -...
Transcript of Introduction to Computer Networks -...
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Introduction to Computer Networks
Polly HuangEE NTU
http://homepage.ntu.edu.tw/[email protected]
Polly Huang, NTU EE 1
![Page 2: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/2.jpg)
Polly Huang, NTU EE 2
Vital Information
• Course : ������• Taught by : ��• Class No. : EE4020
901 E31110• Credit : 3 units
![Page 3: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/3.jpg)
Add Code?
• Follow the course for 2 weeks• Shop around. Think again.
• Thursday of the 2nd week– see better how the class size goes– distribute add code selectively provided space
Polly Huang, NTU EE 3
![Page 4: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/4.jpg)
Special Course
• Sponsored by NTU/MOE• Designed to promote
– Interaction (not just student-instructor)– Independent/team problem solving– Tolerance to different perspectives (justify
your own solutions/opinions)• Space limited
– due to course nature and resource constraintPolly Huang, NTU EE 4
![Page 5: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/5.jpg)
Polly Huang, NTU EE 5
99% in English
• All communication in English, including– Lectures
– Homework
– Exams
– In/off-class interaction
• One exception– You may fall back in Mandarin in class if you
are really short of words
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Polly Huang, NTU EE 6
Be Aware
• Credits are granted only when the English is comprehensible– Keep your words/sentences simple– The point is to communicate
![Page 7: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/7.jpg)
Polly is not nice!
Polly Huang, NTU EE 7
![Page 8: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/8.jpg)
Polly Huang, NTU EE 8
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Polly Huang, NTU EE 11
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Polly Huang, NTU EE 12
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Semester Grade Histogram - 2008 Fall
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Polly Huang, NTU EE 13
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Semester Grade Histogram - 2012 Fall
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Semester Grade Histogram - 2014 Fall
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Polly Huang, NTU EE 16
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Semester Grade Histogram - 2015 Fall
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Polly Huang, NTU EE 17
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Semester Grade Histogram - Fall 2016
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Polly Huang, NTU EE 18
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Semester Grade Histogram - Fall 2018Co
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Today
The Class Admin
Polly Huang, NTU EE 19
![Page 20: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/20.jpg)
Polly Huang, NTU EE 20
Roadmap• The essentials• Administrative Information• Content
– Course objective and scope– Syllabus
• Your responsibility & Grading policy– Homework– Quiz + Class participation– Exams
• Class material
![Page 21: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/21.jpg)
Polly Huang, NTU EE 21
The Essentials
• Course page– http://homepage.ntu.edu.tw/~pollyhuang/teach/intro
-cn-fall-19/
• Polly Huang– http://homepage.ntu.edu.tw/~pollyhuang– Click the ‘Teaching’ link– Then, click the ‘Fall 2019’ under the ‘Introduction to Computer
Networks’ category
![Page 22: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/22.jpg)
Polly Huang, NTU EE 22
Roadmap• The essentials• Administrative Information• Content
– Course objective and scope– Syllabus
• Your responsibility & Grading policy– Homework– Quiz + Class participation– Exams
• Class material
![Page 23: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/23.jpg)
Polly Huang, NTU EE 23
Lecture Info
• Location– BL-212
• Time– Wednesday, 1:20-2:10; – Thursday, 10:20-11:10, 11:20-12:10– Please note that during the breaks the priority goes to
the calls of nature. Questions will be addressed afterwards
![Page 24: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/24.jpg)
Polly Huang, NTU EE 24
The Instructor
• Polly Huang– Office: BL, Room 613– Phone: 3366-3599– Email: [email protected]– Homepage:
http://homepage.ntu.edu.tw/~pollyhuang
![Page 25: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/25.jpg)
Polly Huang, NTU EE 25
Office Hour
• Thursday 12:10-1:00• Or by appointment
![Page 26: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/26.jpg)
Polly Huang, NTU EE 26
The TA
• None
![Page 27: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/27.jpg)
Polly Huang, NTU EE 27
Roadmap• The essentials• Administrative Information• Content
– Course objective and scope– Syllabus
• Your responsibility & Grading policy– Homework– Quiz + Class participation– Exams
• Class material
![Page 28: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/28.jpg)
Polly Huang, NTU EE 28
Nature
• A first course on data networks• Designed for EECS students
![Page 29: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/29.jpg)
Polly Huang, NTU EE 29
Prerequisite
• Introduction to Computer Programming (must)
• Introduction to Computers (must)• Data Structure and Programming Language
(preferred)
![Page 30: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/30.jpg)
Polly Huang, NTU EE 30
Objectives
• Knowing the existence and the components of the Internet (what)
• Examining the mechanisms running in various components (how)
• Understanding the nature of the problems these mechanisms are trying to solve (why)
![Page 31: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/31.jpg)
Polly Huang, NTU EE 31
Scope
• The data network, a.k.a. the Internet
• By the layers– Application Layer, Transport Layer, Network
Layer, Link Layer• By the common functions across layers
– Mobile Wireless Networking, Multimedia Networking
![Page 32: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/32.jpg)
Polly Huang, NTU EE 32
Syllabus+Schedule: 1st Half• 01 09/11- Class Admin• 02 09/18- Overview• 03 09/25- Overview (PA#1)• 04 10/01- Application Layer: Web/HTTP, FTP• 05 10/09- Application Layer: SMTP, DNS, P2P (EA#1)• 06 10/16- Application Layer: Unix Socket Programming• 07 10/23- Transport Layer: UDP, Reliable transfer (PA#2)• 08 10/30- Transport Layer: TCP error recovery• 09 11/06- Transport Layer: TCP congestion control (EA#2)
![Page 33: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/33.jpg)
Polly Huang, NTU EE 33
Syllabus+Schedule: 2nd Half• 10 11/13- Midterm Examination• 11 11/20- Network Layer: Routing Principle
• 12 11/27- Network Layer: IPv4 (PA#3)
• 13 12/04- Network Layer: IPv6, Multicast Routing
• 14 12/11- Link Layer: MAC (PA#4)
• 15 12/18- Link Layer: Ethernet
• 16 12/25- Wireless and Mobile (EA#3)
• 17 01/01- Multimedia Networking
• 18 01/08- Final Examination
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Roadmap• The essentials• Administrative Information• Content
– Course objective and scope– Syllabus
• Your responsibility & Grading policy– Homework– Quiz & Class participation– Exams
• Class material
Polly Huang, NTU EE
![Page 35: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/35.jpg)
Polly Huang, NTU EE 35
Grading• Homework
– Essay assignments (15%)
– Practical assignments (20%)
• Interaction– In-class quiz (15%)
– Participation (10%)
• Exams– Midterm (20%)
– Final (20%)
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Polly Huang, NTU EE 36
Team vs. Individual
• Teamwork
– Essay assignments (15%)
– Practical assignments (20%)
– In-class quiz (15%)
• Individual
– Participation (10%)
– Midterm (20%)
– Final (20%)
![Page 37: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/37.jpg)
Polly Huang, NTU EE 37
Team Up – Loners Allowed
• 1-3 students per team– No more
• Same members for – Homework
– In-class quiz
• Break-up allowed– But be cautious of your decision
![Page 38: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/38.jpg)
Polly Huang, NTU EE 38
Homework Assignments
• 3 essay assignments• 4 practical assignments
– Unix and socket programming exercises
• Submission all in electronic format• No late assignments
![Page 39: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/39.jpg)
Polly Huang, NTU EE 39
Essay Assignments
• Essays– Assigned topic
– Search for additional material (google or else)
– Read and discuss as a group
– Set your storyline
– Write a 3-page essay about it
– Submission all in electronic format
• To fulfill this requirement– 3-page write-up (5% each)
![Page 40: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/40.jpg)
Polly Huang, NTU EE 40
Practical Assignments
• PA1: Basic Unix commands (5%)
• PA2: Unix socket web server stage 1 (5%)• A Simple Echoer
• PA3: Unix socket web server stage 2 (5%)• A Simple HTTP 1.0 Command Interpreter
• PA4: Unix socket web server stage 3 (5%)• A Simple HTTP 1.0 Web Server
![Page 41: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/41.jpg)
Polly Huang, NTU EE 41
In-Class Quiz
• Random quiz– Problem related to the topics of the week– Given time to work on in class
• To fulfill this requirement– Submit your solutions in/off class (by the
Friday of Week 17)– Graded by completion rate (total 15%)– Top sharers get special reward
![Page 42: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/42.jpg)
Polly Huang, NTU EE 42
Class Participation
• Any in-class or off-class interaction counts– Remember to state your name
• Off-class interaction includes– Coming to the office hour– Interacting over FB/email
• Graded by curve (scale to min/max of the class)
![Page 43: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/43.jpg)
Polly Huang, NTU EE 43
Exams
• 1 Midterm (20%)• 1 Final (20%)• In Q&A form• Old exams available from the class page• No early/makeup exams
– Many sorries to exchange students who need to leave early for the winter quarter at home universities
![Page 44: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/44.jpg)
Polly Huang, NTU EE 44
Integrity
• Shall there be any cheating behavior involved– You receive 0 for the grade– The case reported to the department and the
university
![Page 45: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/45.jpg)
Gentle Reminder:
Polly is not nice!
Polly Huang, NTU EE 45
![Page 46: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/46.jpg)
Polly Huang, NTU EE 46
Roadmap• The essentials• Administrative information• Content
– Course objective and scope– Syllabus
• Your responsibility & Grading policy– Homework– Quiz + Class participation– Exams
• Class material
![Page 47: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/47.jpg)
Polly Huang, NTU EE 47
Class Material
• Textbook
Computer Networking: A Top-Down Approach, 7/eJames F. Kurose & Keith W. Ross
• Local carrier
�� Eurasia Book Co.
Tel: 02-8912-1188, FAX: 02-8912-1166
![Page 48: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/48.jpg)
Polly Huang, NTU EE 48
Additional Material
• Lecture slides in pdf format
• Available from the course page
![Page 49: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/49.jpg)
Polly Huang, NTU EE 49
Which is again here:
• Course page– http://homepage.ntu.edu.tw/~pollyhuang/teach/intro
-cn-fall-19/
• Polly Huang– http://homepage.ntu.edu.tw/~pollyhuang– Click the ‘Teaching’ link– Then, click the ‘Fall 2019’ under the ‘Introduction to Computer
Networks’ category
![Page 50: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/50.jpg)
Questions?
Or join the Facebook group and post!
Polly Huang, NTU EE 50
![Page 51: Introduction to Computer Networks - 國立臺灣大學homepage.ntu.edu.tw/~pollyhuang/teach/intro-cn-fall-19/...–Then, click the ‘Fall 2019’ under the ‘Introduction to Computer](https://reader034.fdocuments.in/reader034/viewer/2022042712/5f9729f9c9bad20a213f230e/html5/thumbnails/51.jpg)
Quiz Time!
Polly Huang, NTU EE 51