Use of client-Server paradigm a Web server Makes set of pages available Uses port 80 Web client Called a browser Creates tcp connections to server Sends requests for items 哈工大计算机学院李全龙 Network Application Development Server Software Desi哈工大计算机学院 李全龙 Network Application Development Server Software Design 4 Use of Client-Server Paradigm „ Web server „ Makes set of pages available „ Uses port 80 „ Web client „ Called a browser „ Creates TCP connections to server „ Sends requests for items