1. CNT 4704 Computer Communication Networking (not “analysis”)
Cliff Zou
School of Electrical Engineering
and Computer Science
University of Central Florida
Fall 2009

2. About my self Office: HEC 335 Tel: 407-823-5015 czou@cs.ucf.edu
Office hour: Tuesday/Thursday 3pm – 5pm
Course webpage:
UCF Tegrity for online lecture video streaming
Each lecture will be posted several hours after a class
Use for homework assignment and grading
Keeping grade private
Easy homework submission
Having a simple BBS channel

3. What is this course about?
Very few, very basic “analysis” (don’t be scared by the course’s official name)
Introductory course in “computer networking”
Focus on Internet architecture/protocols
TCP/IP, 2 networking programming projects
Several lab assignments (fun, real)
(spam), Web. Ethernet, hub, wireless LAN
One chapter on Internet security introduction
Goals:
Learn a lot (facts, principles and practice)
Have fun (Use/apply/understand real world network immediately)

4. Student evaluation of this course
Fall 2005 (11):
Excellent-55%, Very good-18.2%
Good-18.2%, Fair-9.1%, Poor-0%
Fall 2006 (6):
Excellent-76.7%, Very good-21.7%
Good-0%, Fair-1.7%, Poor-0%
Fall 2007 (12):
Excellent-41.7%, Very good-25%
Good-25%, Fair-0%, Poor-8.33%
Fall 2008 (5): started to use Tegrity
Excellent-80%, Very good-20%
Good-0%, Fair-0%, Poor-0%

5. Course information Prerequisites: Course materials:
Basic knowledge on Algorithms and Operating Systems
C or C++ programming skills
Basic usage of Linux
Olympus account + my lab Linux for networking programming
Course materials:
Text: Computer Networking: A Top Down Approach Featuring the Internet, J. Kurose & K. Ross, Addison Wesley, 5th ed., 2009
Textbook online resource (see first page)
Class notes

6. Course information (more)
Workload:
Coursework approx amount approx %
written homework                                         20%
programming (C,C++)             2-3                         24%
lab assignments (Ethereal)         2                            10%
midterm exam                              1                             20%
final exam                                    1                             26%
The final grade will use +/- policy, i.e., you may get A, A-, B+, B, B- … grade.

7. Course information (even more)
In-class style: interaction, questions
Real network programming (fun)
Hands on experience: packet trace, spam
Flexible:
Teaching difficulty/speed/contents based on your feedback
So please tell me freely your thinking and interests!
Academic honesty

8. A top-down approach: local ISP regional ISP
We’ll cover networking top-down
regional ISP
End-system applications, end-end transport
Network core: routing, hooking nets together
Link-level protocols, e.g., Ethernet
Other interesting stuff:
Security
wireless
company network

9. Course Overview: Part 1: Introduction (text: Chapter 1) Application
What is the Internet?
Application
Web, , VOIP
Application
Transport
TCP, UDP
Transport
Network IP
Network
Data Link
Ethernet, cellular
Data Link
Physical link

10. Course Overview: Part 2: Application Layer (text: Ch. 2)
Principles of application-layer protocols
World Wide Web: HTTP
File transfer: FTP
Electronic mail:
The Internet's directory service: DNS
VOIP (Voice Over IP)
Socket programming
PROGRAMMING ASSIGNMENT 1
If possible, have another networking program
--- a simple web proxy

11. Course Overview: Part 3: Transport Layer (text Ch. 3)
Transport-layer services and principles
Multiplexing and demultiplexing applications
Connectionless transport: UDP
Principles of reliable of data transfer
TCP case study
PROGRAMMING ASSIGNMENT 2
Principles of congestion control
TCP congestion control

12. Course Overview: Part 4: Network Layer (text: Ch. 4)
introduction and network service model
what’s inside a router?
routing principles (algorithms)
hierarchical routing
IP: the Internet Protocol
Internet routing: RIP, OSPF, BGP

13. Course Overview: Part 5: Link Layer, Local Area Networks (text: Ch. 5)
introduction, services
error detection, correction
multiple access protocols, LANs
LAN addresses, ARP
Ethernet

14. Course Overview: Part 6: Wireless and Mobile Networks (Ch 6)
wireless link characteristics
the wireless link:
802.11
cellular Internet access
Mobility principles
mobility in practice:
mobile IP
mobility in cellular networks
Sensor network, vehicular network introduction

15. Course Overview: Part 7: Network Security (text: Ch. 8)
what is network security?
Introduction of cryptography
authentication: Who are you?
integrity
key distribution, certification
Internet security hot topics:
Malware attacks, denial-of-service attacks, countermeasures
Secure , firewall, honeypot, botnet

16. Summary Introductory, practical Know basic networking programming
All (almost) you need to know about Internet, and applications
Many acronyms, don’t be frustrated