1 ECS 152 A Computer Networks Fall 2009

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1 ECS 152 A Computer Networks Fall 2009 Prof. Xin Liu www. cs. ucdavis.

1 ECS 152 A Computer Networks Fall 2009 Prof. Xin Liu www. cs. ucdavis. edu/~liu/152 A/F 2009/152 A. html 10/2/2020

Highlights • prerequisites: ECS 110 and Statistics • Class: TR 1: 40 -3: 00

Highlights • prerequisites: ECS 110 and Statistics • Class: TR 1: 40 -3: 00 PM, 2016 Haring; • Discussion: F, 11 a. m. -11: 50 a. m. ; 2016 Haring Xin Liu 2

Highlights • Textbook – J. Kurose and K. Ross, Computer Networking: A Topdown approach

Highlights • Textbook – J. Kurose and K. Ross, Computer Networking: A Topdown approach featuring the Internet, Addison Wesley, 5 th edition. – 4 th edition is also ok. • TA: Yichuan Wang, Email: yichuan 1118@gmail. com • TA office hour: Wedn. 12 -2 PM, 55 Kemper Hall • Instructor office hour: F 1 -2 PM 3013 EII or by appointment – If needed, the office hour will be extended to 3 pm. Xin Liu 3

Grading Policy • Grading – Projects 25% (2 Android-based projects) – Midterm 20% (one

Grading Policy • Grading – Projects 25% (2 Android-based projects) – Midterm 20% (one mid-term, Nov. 3) – Homework 20% (4 sets) – Final 35% • All homework and projects will be submitted online. Xin Liu 4

5 • • All homework and projects require individual efforts. Discussions are allowed, no

5 • • All homework and projects require individual efforts. Discussions are allowed, no copying allowed. Late policy – – • Full credit if on time 50% if within 24 hours 25% if within 48 hours 0 after 48 hours Regrading Policy – One week regrading period after grades returned to students • Incomplete will not be granted – Unless proved emergency with filled emergency form • Academic Integrity – Homework – Projects Xin Liu

Email • Please include “ECS 152 A” in your subject line, to me and

Email • Please include “ECS 152 A” in your subject line, to me and to the TA. • In most cases, 24 -hour response. • If your requests not responded, let me know. Xin Liu 6

Email etiquettes • UCD Email Etiquette Ø R U handing back midterms Th? Ø

Email etiquettes • UCD Email Etiquette Ø R U handing back midterms Th? Ø Pls. reply asap. Xin Liu 7

Email Hi Gary, I was wondering if you are going to be handing back

Email Hi Gary, I was wondering if you are going to be handing back the midterm this week? Thanks, Shareen Ø It is also best to address your email to one person, possibly cc to others. Xin Liu 8

Good Grade Guideline • Protocol stacks are rational – Understand, not memorize • Active

Good Grade Guideline • Protocol stacks are rational – Understand, not memorize • Active classroom participation • Do your own homework and projects – Help you understand – Help you do well in exams • Follow the textbook and notes • Extra material covered in lectures Xin Liu 9

H 1 N 1 • H 1 N 1 is expected to hit about

H 1 N 1 • H 1 N 1 is expected to hit about 20% of us this Fall • Seasonal flu vaccine is available and strongly recommended this year. • H 1 N 1 vaccine will be available early to mid October. • H 1 N 1 is spread more though coughing than through touch. • I may ask obviously sick students to leave as a simple courtesy to others. • If I am sick, I will find replacement/send announcement. Xin Liu 10

Road Map • Introduction – Communications model and networking – Protocols and architecture –

Road Map • Introduction – Communications model and networking – Protocols and architecture – Packet-switched networks • Application Layer – – – Principles Web File transfer Email DNS Peer-to-peer Xin Liu 11

Road Map • Transport Layer – – – • Introduction and principles UDP (User

Road Map • Transport Layer – – – • Introduction and principles UDP (User Datagram Protocol) TCP (Transmission Control Protocol) Reliable data transfer and TCP Congestion control and TCP Network Layer – – – Introduction Inside a router The Internet Protocol (IP) Routing algorithms IP Routing Broadcast and multicast Xin Liu 12

Road Map • The Link Layer and Local Area Networks – – – Introduction

Road Map • The Link Layer and Local Area Networks – – – Introduction and services Error Detection and Correction Multiple Access Link-layer Addressing Ethernet Link Layer Switching Xin Liu 13

Comments? • Questions always welcome in class/office hours. • I am constantly looking for

Comments? • Questions always welcome in class/office hours. • I am constantly looking for ways to make this class better, more useful, more fun • All comments/suggestions welcome. • Anonymous if you like. • http: //www. cs. ucdavis. edu/~liu/152 A/F 2009/152 A. html • Questions? Xin Liu 14

Walkout and Budget • Budget and its consequence – Fee increase, enrollment decrease, crowded

Walkout and Budget • Budget and its consequence – Fee increase, enrollment decrease, crowded classes, poor infrastructure and maintenance – Lose good people – Lose competitiveness – Privatization of public universities • The goal of the university and faculty members – Education, research, service • What can we do together? • Furlough days Xin Liu 15

Personal Finance • • • Responsible Savvy Credit card Debit card Saving Investment Xin

Personal Finance • • • Responsible Savvy Credit card Debit card Saving Investment Xin Liu 16

A few other notes • Internship opportunity – www. cacetech. com – Contact John

A few other notes • Internship opportunity – www. cacetech. com – Contact John Bruvo – john. bruno@cacetech. com • Undergraduate research opportunities – Android – Self motivated – Long term commitment • ECS 152 B Xin Liu 17

ECS What is ECS Electronic Clearing System ECSECS What is ECS Electronic Clearing System ECS
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ATM and MPLS ECS 152 A 1 VirtualizationATM and MPLS ECS 152 A 1 Virtualization
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