How applications become clients by initiating communication How applications use TCP or UDP protocols to contact a server How they use socket calls to interact with the protocols CSIE, NTUT, Taiwan

Introduction Loosely specified protocol software interface Interface functionality Conceptual interface specification · System calls Two basic approaches to network communication Basic I/ functions in Linux

Client-Server Model Software Design Concurrent Processing CSIE, NTUT, TAIWAN

CONTENTS TCP SERVICES NUMBERING BYTES FLOW CONTROL SILLY WINDOW SYNDROME ERROR CONTROL TCP TIMERS CONGESTION CONTROL SEGMENT OPTIONS CHECKSUM

Transport layer protocol is to reate a process-to-process communication Provide control mechanisms Provide a connection mechanism for the processes

Physics 121, Sections 9, 10, 11, and 12 Lecture 4 Announcements Lectures available on the web(short version) For over-enrollment please go to the Physics office P107 Laboratory sessions start next week Gotomywebsitewww.phys.uconn.edu/-rcote Syllabus+ homeworks lectures, etc Webassign gotowww.webassign.netandlogin

Announcements Lectures available on the web(short version) For over-enrollment please go to the Physics office P107 Laboratory sessions start next week Gotomywebsitewww.phys.uconn.edu/-rcote Syllabus+ homeworks lectures, etc Webassign

Announcements Homeworks posted on WedAssign You need to register($10.00 by credit card) go to ww. webassign. net and log in >)username: first letter of first name plus last name

Topics Covered Stocks and the Stock Market Book Values. Liquidation Values and Market values Valuing Common Stocks Simplifying the Dividend Discount Model Growth Stocks and Income Stocks Irwvin McGraw-Hill

Topics Covered Bond Characteristics reading the financial pages Bond Prices and Yields Bond prices and interest rates YTM VS. current yield Rate of Return Interest Rate Risk The Yield Curve Nominal and Real Rates of Interest