Objective 4.3 Questions

1.	You are working as a DST for a help desk. A user in your company is having problems connecting to the Internet and tells you that he tried to troubleshoot the problem himself using the Properties dialog box for the network connection. You have the user open the command prompt and type ping 127.0.0.1. The user receives an error message. What does this suggest to you? TCP/IP is not properly installed on the computer. The user should configure 127.0.0.1 as the static IP address for the connection. The computer is having trouble resolving names using the configured DNS servers. The 127.0.0.1 address is assigned by the Windows APIPA feature because a DHCP server cannot be located.
2.	One of your customers complains that he can connect to some network resources with no problem, but connections to some resources in remote offices seem particularly slow. You suspect that there may be problems with routing on the network. Which of the following tools is best for examining these issues? ipconfig ping pathping msconfig
3.	A user complains to you that he cannot connect to any network resources after installing a new networking card. You open the Command Prompt window on the user’s computer and type ipconfig /all. You get the following results: Ethernet adapter Local Area Connection: Connection-specific DNS Suffix. : Description . . . . . . . . . . . : Intel(R) PRO/1000 CT Physical Address. . . . . . . . . : 00-02-F4-32-04-2C Dhcp Enabled. . . . . . . . . . . : Yes IP Address. . . . . . . . . . . . : 169.254.102.111 Subnet Mask . . . . . . . . . . . : 255.255.0.0 Default Gateway . . . . . . . . . : DNS Servers . . . . . . . . . . . : What do these results suggest? (Choose all that apply.) The computer is configured to connect to a DHCP server. The computer is not configured to connect to a DHCP server. The computer successfully connected to a DHCP server. The computer did not successfully connect to a DHCP server.
4.	You get a call from a home user. She tells you that she has two computers in her home: one is the main family computer, and one is her son’s computer. Both computers are running Windows XP Home Edition. Her husband networked the two computers together so that the son could access the printer on the main computer. The main computer is connected to the Internet using a cable modem. She wants the other computer to be able to access the Internet as well, but does not want to pay for a separate Internet connection. What should you tell her? She can use ICS to share the connection. She can use ICS to share the connection, but both computers must be upgraded to Windows XP Professional Edition. She can use ICS to share the connection, but the main computer sharing the connection must be upgraded to Windows XP Professional Edition. She can use ICS to share the connection, but the son’s computer must be upgraded to Windows XP Professional Edition.
5.	One of your customers owns a small business with six computers running Windows XP. The business has a single Internet connection—a cable modem connected to one of the computers. The owner configured ICS on the computer connected to the Internet and then restarted the other computers on the network. All computers except one could connect to the Internet. You ask her to type ipconfig at the command prompt of the computer that does not connect, and she gets the following result: Ethernet adapter Local Area Connection: Connection-specific DNS Suffix. : IP Address. . . . . . . . . . . . : 10.5.23.102 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 10.5.23.1 What is the likely problem? The default gateway information is incorrect. The subnet mask is incorrect. The computer is configured with a static IP address. There are no DNS servers configured.
6.	One of your customers has three computers on a home network, and each is running Windows XP Home Edition. The computers are named Client1, Client2, and Client3. The customer configured each computer with a static IP address. Client1 and Client2 can communicate successfully with one another. Client3 cannot establish a connection with the other computers on the network. The IP addresses assigned to the computers are as follows: Client1: 192.168.0.1 Client2: 192.168.0.100 Client3: 192.168.0.254 Assuming that the networking adapter is configured and working properly, and that the network cable is plugged in, which of the following is probably the problem? APIPA is enabled on Client3. The address 192.168.0.254 is out of the acceptable range. The subnet mask is incorrectly configured on Client3. The default gateway is incorrectly configured on Client3.
7.	One of your customers uses a dial-up connection to the Internet on his home computer. Recently, his Internet service provider (ISP) added a new access telephone number, and the customer wants to use that number instead of the main number. How can you change this information? Use the Dialing Rules tab of the Phone And Modem Options Properties dialog box, available in the Windows Control Panel. Use the General tab of the dial-up connection’s Properties dialog box. Use the Remote tab of the System Properties dialog box, available in the Windows Control Panel. You must delete the current dial-up connection and create a new one.
8.	One of your customers uses a dial-up connection to the Internet on his home computer. He says that every time the computer dials in to the Internet, the noise the modem makes is very loud, and he would prefer not to hear it at all. What can you tell your customer? Click Configure on the General tab of the dial-up connection’s Properties dialog box and clear the Enable Modem Speaker check box in the Modem Configuration dialog box. Use the Dialing Rules tab of the Phone And Modem Options Properties dialog box, which is available in the Windows Control Panel. You cannot disable the modem speaker using the Windows XP interface. The customer should check the software that came with the modem. You cannot disable the modem speaker, but you can silence it by muting the general volume in Windows XP.

Answers

1.	Correct Answers: A Correct 127.0.0.1 is the local host’s loopback address. Pinging 127.0.0.1 successfully means that TCP/IP is installed on the computer. Incorrect 127.0.0.1 is a reserved address known as the local loopback address. It should never be assigned as an actual IP address. Incorrect Receiving an error message when pinging the local loopback address does not indicate a name resolution problem. Incorrect APIPA assigns addresses in the 169.254.0.0–169.254.255.255 range.
2.	Correct Answers: C Incorrect Ipconfig displays information about the TCP/IP configuration on a computer, not information about the route used to reach network resources. Incorrect Ping is a command-line tool used to verify a connection to another IP address on the network, but it does not display routing information. Correct Pathping is a command-line tool that traces a route through a TCP/IP network. It combines the features of the tracert and ping commands. Incorrect Msconfig is used to control the Windows XP startup environment.
3.	Correct Answers: A and D Correct DHCP is enabled on this computer. Incorrect DHCP is enabled on this computer. Incorrect The computer did not connect to a DHCP server. You can tell because the computer assigned itself an IP address in the APIPA range of 169.254.0.0– 169.254.255.255. Correct The computer did not connect to a DHCP server. You can tell because the computer assigned itself an IP address in the APIPA range of 169.254.0.0– 169.254.255.255.
4.	Correct Answers: A Correct ICS is available in Windows XP Home Edition and can be used to share one computer’s Internet connection with other computers on the network. Incorrect ICS is available in Windows XP Home Edition. Incorrect ICS is available in Windows XP Home Edition. Incorrect ICS is available in Windows XP Home Edition.
5.	Correct Answers: C Incorrect The default gateway information is incorrect, but that is not the cause of the current problem. Incorrect The subnet mask is not the cause of the current problem. Correct The computer is most likely configured with a static IP address. Were it configured to obtain an IP address automatically (which it should be), the ICS computer would supply the client computer with an address in the 192.168.0.2– 192.168.0.254 range. Incorrect It is not possible to tell from this result whether there are DNS servers configured. You need to type in ipconfig /all to see this information.
6.	Correct Answers: C Incorrect Whether APIPA is enabled or not does not matter. The client is configured with a static IP address. Incorrect The address 192.168.0.254 is within the acceptable range. Correct All computers must be on the same subnet (and therefore have the same subnet mask) to communicate with one another. An incorrect subnet mask is the only possible problem of those listed. Incorrect It does not matter which default gateway is used. The default gateway is used only to forward network traffic to computers that are not on the same subnet. The computers in this example should be on the same subnet.
7.	Correct Answers: B Incorrect The Phone And Modem Options Properties dialog box is used to configure your location, and general settings for the modem—not information for a particular dial-up connection. Correct The General tab of the Properties dialog box for the dial-up connection lets you change the phone number, configure alternate phone numbers, and set dialing rules. Incorrect The Remote tab of the System Properties dialog box is used to configure Remote Assistance and Remote Desktop. Incorrect This is not necessary. You can use the General tab of the Properties dialog box for the dial-up connection to change the phone number.
8.	Correct Answers: A Correct The Modem Configuration dialog box allows you to disable the modem speaker. Incorrect You cannot disable the modem speaker on the Dialing Rules tab. Incorrect You can disable the speaker in Windows XP. Also, most modems do not have separate applications. Incorrect The computer volume does not affect the modem speaker. Also, you can disable the modem speaker in Windows XP.