1. Welcome to IST 220: Networking and Telecommunications

2. Teaching Team Zihan Zhou – Ph.D in Electrical and Computer Engineering from UIUC – Research interest: image processing, computer vision – Office hour: 2:30-4:30pm Monday or by appointment – Office: 320 IST Building TA: Yan Wang – Location: 321D IST Building IST2102

3. Course Website IST2103 Log into your ANGEL You will see all course information on wikispace

4. What Is This Course About? ???

5. What Is The Course About? Three “networking” topics Distributed systems Networking Communications signals packets apps We are in the middle

6. The Main Goals 1.To learn how the Internet works – What really happens when you “browse the web”? – What are TCP/IP, DNS, HTTP, NAT, VPNs, 802.11 etc. anyway?

7. Why learn how the Internet works? Curiosity Impact on our world Job prospects!

8. From this experimental network… ARPANET ~1970 (a) Dec 1969(b) July 1970(c) March 1971 credit: David Wetherall

9. …To this! Internet – An everyday institution used at work, home, and on-the-go (a) Nov 2003(b) Nov 2010 credit: The Opte Project

10. Internet – Social Impact An enabler of societal change – Easy access to knowledge – Instant communication – Electronic commerce – Personal relationships – Online education

11. Internet – Economic Impact An engine of economic growth – Advertising-sponsored search – “Long tail” online stores – Online marketplace – Crowdsourcing Mobile crowdsourcing Crowdfunding Microwork Discussion: What’s your favorite 1.Internet application 2.Crowdsourcing platform?

12. The Main Goals 2.To the learn the fundamentals of computer networks – What hard problems must they solve? – What design strategies have proven valuable?

13. Why learn the fundamentals? Apply to all computer networks Intellectual interest Change / reinvention

14. Intellectual Interest Think about the Internet as a public transportation system. – State College  Boston What problems you may encounter during the road trip?

15. Intellectual Interest Key problemsExample solutions Reliability despite failuresCodes for error detection/correction Routing around failures Network growth and evolutionAddressing and naming Protocol layering Allocation of resourcesMultiple access Congestion control SecurityConfidentiality of messages Authentication of communications credit: David Wetherall College of Engineering network disabled in response to sophisticated cyberattack http://news.psu.edu/story/357656/2015/05/15/administration/college-engineering- network-disabled-response-sophisticated Two-factor authentication to be activated on WebAccess Dec. 3: http://news.psu.edu/story/382522/2015/11/25/administration/two-factor- authentication-be-activated-webaccess-dec-3

16. Change/Reinvention The Internet is constantly being re-invented! – Growth over time and technology trends drive upheavals in Internet design and usage Today’s Internet is different from yesterday’s – But the fundamental remains the same

17. How Will This Course Be Taught? Class time: Monday and Wednesday – Short lectures: key concepts – In-class exercises – Discussion on your answers Group Research / Lab time: Friday – Group research assignments Group work together in class on a research topic – Individual Hands-on lab assignments Virtual labs can also be accessed outside of the class.

18. Information, Technology, and People

19. Technical Part Understand the principles – Theories, standards, designs, etc. Gain "hand-on" skills through lab assignments

20. People Part Understand the applications of networks and telecommunications – Impacts on people's life, business, policies, etc. Group research assignments

21. Readings for Lectures Text – Computer Networks and Internets Douglas E. Comer 6th Edition Additional readings will be provided. – Always check the latest schedule in ANGEL Read the text before class! – This is required! – There may be a short quiz on the reading at the beginning of a class

22. In Class Attendance and participation – Attendance is required for every class! In-class quizzes Random attendance checks Involvement of class discussions – 10% in final grading – If you are not able to attend class with reasonable excuse, instructor or TA should be notified before class Class rule: Computers will be taken control during lecture time

23. After Classes Study groups strongly encouraged Keep track of up-to-date IT news and events – See how they can be related to this course. Google News Slashdot.org

24. Homework Assignments Three homework assignments – Due: one week after an assignment is given – Independent work! Do not exchange your answers with your classmates! Do not search for solutions online!

25. Hands-on Lab Assignments Five hands-on lab assignments – Build, configure, and analyze networks – Specific guidance and questions will be provided – Work individually in Friday’s class

26. Group Research Assignments Work in group on a topic assigned by the instructor as well as your favorite topic (approved by the instructor) 3-4 people per group. You can choose whom to work with.

27. Submit Your Assignments Specific submission guidelines will be given for each assignment – Most assignments will be submitted online through ANGEL – Strict late submission penalty After the deadline but less than 24 hours: 10% penalty More than 24 hours but less than hours late: 30% penalty No submission are accepted more than 48 hours late

28. Exams Two in-class midterm exams. – Week 5 and Week 11 One final exam All exams are non-cumulative

29. Grading Three (3) homework assignments: 15% Five (5) Hands-on lab assignments: 20% Group research assignments: 20% Two (2) midterm exams: 20% Final exam: 15% Class attendance and participation: 10%

30. To Succeed in This Course Study hard – We are coaches. You are on the driving seat.

31. To Succeed in This Course (Cont.) Study wisely – Learn from various resources Classes, readings, online news, peers, … MOOC courses – mooc-list.com – Apply what you have learnt in real life – Manage your time well

32. Communicate with the teaching team Check course website frequently for – Latest update – Announcements Please let us know if you have any question or concern. – Email, office hours – No such thing as a stupid question Come to see us in office hours. – You don’t have to have a specific question.

33. Next class Introduction and overview Reading before class: Chapter 1

34. Now Know each other and form groups – Email TA your group roster