单项选择题 You have a standalone server named Server1 that runs Windows Server 2003 Service Pack 2 (SP2). You install the FTP Server Windows component on Server1. You create several folders under the Ftproot folder as shown in the exhibit. (Click the Exhibit button.) A user named User1 connects to ftp://server1 and reports that he can view the Localuser folder and all of its subfolders. A user named User2 reports the same problem. You need to ensure that when users connect to ftp://server1, they can only view the content located under their user folder. What should you do? （）

单项选择题 You have a server named Server1 that runs Windows Server 2003 Web Edition Service Pack 2 (SP2). You create a new virtual directory named App1. App1 contains a Web application. Users report that when they enter http://app1 in their Web browsers, they are unable to connect to the Web application. You need to ensure that users can access the Web application when they connect to http://app1. What should you do? （）

单项选择题 You have a Web server named Server1 that runs Windows Server 2003 Service Pack 2 (SP2). Server1 hosts two Web sites named App1 and App2. Each Web site is configured to use a unique IP address. You notice that when App1 fails, App2 also fails. You need to ensure that if App1 fails, App2 continues to be available. What should you do?（）