电子商务练习题3.doc

Chapter3 True/False Indicate whether the statement is true or false. ____ 1. The three main elements of a Web server are the hardware, operating system software, and client software. ____ 2. A development site cannot reside on an existing PC running Web server software. ____ 3. The main job of a Web server computer is to respond to requests from Web client computers. ____ 4. The Internet connects many different types of computers running different types of operating system software. ____ 5. When people use their Internet connections to become part of the Web, their computers become Web client computers on a worldwide client/server network. ____ 6. Web server computers usually have more memory and larger, faster disk drives than the client computers they serve. ____ 7. The mix and type of Web pages a system is likely to deliver in response to client requests does not affect Web server performance. ____ 8. Most server-side technologies are very fast. ____ 9. Sometimes, a single client request results in dozens or even hundreds of separate server responses to locate and deliver information. ____ 10. Some servers are connected through a router to the Internet. ____ 11. The basic Web client/server model is a three-tier model. ____ 12. The entity body returns the HTML page requested by the client machine. ____ 13. Linux is an open-source operating system that is easy to install, fast, and efficient. ____ 14. Sun Microsystems sells Web server hardware along with its UNIX-based operating system, FreeBSD. ____ 15. The performance of one Web server differs from that of another based on work load, operating system, and the size and type of Web pages served. ____ 16. A black list spam filter can be implemented at the individual level. ____ 17. Finger is a program that runs on Windows operating systems. ____ 18. Search engines and indexing programs are not important elements of Web servers. ____ 19. With remote server administration, a Web site administrator can control a Web si