You are the administrator of a Windows XP Professional computer named Pro1.  The computer is connected to the Internet. Pro1 provides Internet access to eight other Windows XP Professional computers that are connected to Pro1. You enable Internet Connection Sharing （ICS） and Internet Connection Firewall （ICF） on Pro1. You run an application named App1 on Pro1.  App1 communicates with an online training company on the Internet. In order to display an online seminar， the training company needs to contact the App1 application at port 5800. You want to ensure that the training company can connect to the App1 application.
What should you do?（）

You are a help desk technician for your company. The company network consists of a single Active Directory domain. All client computers run Windows XP Professional. The help desk technicians use Remote Assistance to remotely control user sessions to provide online support to users. The users currently use Microsoft Exchange and Microsoft Outlook to submit Remote Assistance invitations to the help desk technicians. Stephen is a user in the sales department. Stephen has a portable computer and frequently travels to customer locations. While Stephen is in the corporate office, he submits a Remote Assistance invitation to the help desk. When you attempt to answer the invitation and establish the Remote Assistance session, you receive the error message shown in the exhibit.

You verify that Stephen's computer is connected to the network and that he did not cancel the invitation. You also verify that the invitation did not expire. You do not experience similar problems when establishing Remote Assistance sessions with other computers. You need to be able to establish a Remote Assistance session with Stephen's computer.
What should you do?（） 

You are the help desk manager for your company. The company network consists of a single Active Directory domain. All client computers run Windows XP Professional. All help desk technicians are members of the Help Desk Technicians group. They use Remote Assistance to remotely control user sessions to provide online support and training to users. The users currently use Windows Messenger to submit Remote Assistance invitations to the help desk technicians. You want to reduce the time required for help desk technicians to respond to Remote Assistance requests. To accomplish this goal, you want to configure the client computers to allow help desk technicians to establish a Remote Assistance session with a client computer without requiring an invitation from a user.
What should you do?（） 

You are a help desk technician for your company. A portion of your company’s network is shown in the exhibit.

Michael is an employee in your company’s marketing department. Michael uses a Windows XP Professional computer that is located on Subnet A. You use a Windows XP Professional computer that is located on Subnet B. The company’s firewall does not use Network Address Translation (NAT).  Michael sends you a Remote Assistance invitation. In Windows Messenger, you accept the invitation, but you cannot connect to Michael’s computer. Next, you run the Ping command, which verifies connectivity to Michael’s computer. You need to establish a Remote Assistance connection with Michael’s computer.
What should you do next?（） 

You are the manager of your company's Web development department. The company network consists of a single Active Directory domain. All client computers run Windows XP Professional. You install Internet Information Services (IIS) on a Windows XP Professional computer. Users in your department use the computer as a test Web server for new content that they develop. You are a member of the Administrators group on the computer, and you use Remote Desktop to perform routine administrative tasks. Several of the virtual directories on the Web server contain confidential company data. You assign NTFS and IIS permissions to the folders and files on the Web server, the default Web site, and the virtual directories, as shown in the following table.

You administer the default Web site, which contains a page that lists the Web development projects in progress. The Web page also contains links to each of the virtual directories that are hosted on the Web server. You use Microsoft FrontPage to manage the default Web site. Users in the Web development department control the permissions on their own NTFS folders and virtual directories. Occasionally, users report that the permissions on their folders and virtual directories are reset to the default values. You investigate and discover that this occurs whenever you update the default Web site.
What should you do to resolve this problem?（）

You are the desktop administrator for your company. Your company’s software developers use Windows XP Professional and IIS on their client computers to develop Web-based applications. All client computers use Microsoft Internet Explorer 6. 0 or later as their Web browser. One of the developers reports that he can no longer access the Web-based application on his desktop by using his Web browser. When you attempt to access the application by using your Web browser, you receive the following error message: “Cannot find server or DNS Error.” You verify that the World Wide Web Publishing Service is started on the developer’s computer. You also verify that you are using the correct URL to access the developer’s computer by using your Web browser. You need to ensure that the developer can access the Web application by using his Web browser.
How should you configure the developer’s computer?（） 

You are the desktop administrator for your company. The relevant portion of the company’s network is configured as shown in the exhibit.

Bruno is a user in the accounting department. Bruno uses a new Windows XP Professional computer. Bruno reports that he cannot access Web sites on the Internet by using Internet Explorer. However， he can access intranet Web sites that are located on other network subnets by using Internet Explorer. Other users on the network can successfully access Internet Web sites. You need to ensure that Bruno can access Internet Web sites by using Internet Explorer on his computer.
What should you do?（）

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?（） 

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?（） 

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?（）