单项选择题 You are the desktop administrator for Contoso, Ltd. Philippe is a user in the accounting department. Philippe reports that he is not able to download a file from an FTP server by using Internet Explorer on his Windows XP Professional computer. When Philippe attempts to access the FTP server by using the URL ftp://ftp.contoso.com, Internet Explorer displays the following error message: "The password was rejected." Philippe informs you that he has a user name and password for the FTP server, but that Internet Explorer does not prompt him to type the user name or password. You need to ensure that Philippe can access the FTP server by using Internet Explorer on his computer. Which URL should you instruct Philippe to use?（）

单项选择题 You are a network administrator for your company. The company has a main office and a branch office. The branch office has a cable modem connection to the Internet and uses a virtual private network (VPN) connection to access resources on the main office network. The cable modem is connected to a Windows XP Professional computer named Pro1. You configure Internet Connection Sharing (ICS) on Pro1 to allow users in the branch office to use the VPN connection. ICS sets the network adapter to use the IP address 192.168.0.1. Several sales representatives in the branch office use wireless network adapters to share files between their client computers. They need access to the VPN connection to upload sales reports to the main office. You install a wireless network adapter in Pro1 and configure it with the appropriate settings for the wireless LAN. The sales representatives who use the wireless LAN report that they cannot access the VPN connection. However, they are able to connect to resources in the branch office. Users on the wired network do not report any connectivity problems. The sales representatives need to be able to access the VPN. What should you do?（）

单项选择题 You are the network administrator for your company. The network consists of a single Active Directory domain. All client computers run Windows XP Professional. The company has a large number of sales representatives who need access to the company network when they travel. A Windows 2000 Server computer is configured to allow users to access the network by using a dial-up connection. Several of the sales representatives occasionally travel to rural locations that have telephone lines that use outdated technology. The sales representatives report that when they attempt to establish a dial-up connection in these locations, they receive the following error message: "The server is not responding." They cannot connect to the remote access server or to the company network. Users who travel to urban areas do not report this problem. You investigate and find out that the server is running properly, but the problem persists. The sales representatives need to be able to use the dial-up connection to access the company network. What should you do?（）