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Homework answers / question archive / International Academy of Design & Technology IT IT110 Chapter 18 REVIEWING THE BASICS 1)Explain how a single physical computer can be a Web server and an email server at the same time

International Academy of Design & Technology IT IT110 Chapter 18 REVIEWING THE BASICS 1)Explain how a single physical computer can be a Web server and an email server at the same time

Computer Science

International Academy of Design & Technology

IT IT110

Chapter 18


1)Explain how a single physical computer can be a Web server and an email server at the same time.

  1. What Windows XP component can be used to share an Internet connection with other computers on the LAN?


  1. What protocol is commonly used to manage the connection between a broadband modem and a PC when the connection requires a username and password and is not always up?


  1. Give the service and protocol for the following ports: port 21, port 25, port 80, and port 110.
  2. Which protocol used by Web browsers and Web servers is responsible for guaranteeing delivery? For breaking data into packets? For decrypting and decompressing data as necessary?


  1. Explain the difference between a connection-oriented protocol and a connectionless protocol, and give an example of each.
  2. What TCP/IP utility would you use to display the route taken over the Internet by a communication between a Web browser and Web server?


  1. What utility would you use to display information about the name space kept by a DNS server for a particular domain name?


  1. Explain the functions of the following TCP/IP utilities: NSLookup, Winipcfg, Ipconfig, and Microsoft SNMP Agent.


  1. What is the full command line to use Ipconfig to release the current IP address?



  1. What utility new to Windows XP can be used to display a NIC’s MAC address?



  1. Place these stages of creating a dial-up networking connection in Windows 9x/Me in the correct order: creating a connection, verifying installation of the dial-up adapter, installing the Dial-up Networking feature, and entering configuration information for your ISP.
  2. Explain at least four things you can try if you cannot make a connection to the Internet using a dial-up networking connection.
  3. Label the component parts of this URL:


  1. Give the type of organization that would use the following top-level domains: .mil, .net,


.air, .com, .org, .gov.




  1. What are three things you can do to improve slow browser performance?


  1. What protocol is used for sending email? For receiving it?



  1. Explain for what FTP is used.


  1. What is the listening port for Windows XP Remote Desktop?



  1. Explain the difference when a user sees http:// in a browser address box and when the user sees https:// in the address box.
  2. Internet Explorer is the most popular browser. What is one security reason a user might choose to use a different browser such as Firefox by Mozilla?


  1. When an ISP gives a user the two mail server addresses, and, which address should be used for incoming mail and which should be used for outgoing mail?
  2. When using a cable modem to connect to the Internet, the data transmission shares the cabling with what other technology?


  1. What is the FTP command to close an FTP session?



  1. Does it matter which TV jack in your house should be used by your cable modem? Why or why not?
  2. What two methods can an ISP use to assign your computer or router an IP address?



  1. When is it appropriate to delete the C:\Documents and Settings\user name\Local Settings\Temporary Internet Files folder?


  1. What device is required so that you can connect a regular telephone to a VoIP network?



  1. Why is it necessary for your home or office computer to have a static IP address if it is to be set up for Remote Desktop?


  1. Give two examples of broadband technology.





  1. You are trying to connect to the Internet using a Windows XP dial-up connection. You installed a modem card and tested it, so you know it works. Next you create a dial-up connection icon in the Network Connections window. Then you double-click the icon and the Connect dialog box opens. You click Dial to make the connection. An error message displays saying, “There was no dial tone.” What is the first thing you do?
  1. Check Device Manager for errors with the modem.


  1. Check with the ISP to verify that you have the correct phone number, user name, and password.
  2. Check the phone line to see if it is connected.


  1. Check the properties of the dial-up connection icon for errors.



  1. You connect to the Internet using a cable modem. When you open your browser and try to access a Web site, you get the error, “The Web page you requested is not available offline. To view this page, click Connect.” What might be the problem(s) and what do you do?
  1. The browser has been set to work offline. On the File menu, verify that Work Offline is not checked.
  2. The cable modem service is down. In the Network Connections window, right-click the LAN connection and select Repair on the shortcut menu.
  3. Internet Connection Firewall is enabled on your PC. Disable it.


  1. The cable modem is down. Go to Device Manager and check for errors with the cable modem.
  1. This question combines skills learned in this and previous chapters. You have set up a small LAN in your home with two Windows XP PCs connected to the Internet using a DSL connection. You have a DSL router box connected to the DSL line and to a small hub. Your two PCs connect to the hub. You have enabled Internet Connection Firewall on the LAN connection on both PCs, and you can browse the Internet from either PC. However, you discover that each PC cannot use the resources on the other PC. What is the problem and what do you do?
  1. The network hub is not working. Try replacing the hub.


  1. The NICs in each PC are not working. Try replacing one NIC and then the next.


  1. The LAN connections in the Network Connections window are not working. Delete the connections and recreate them.
  2. Internet Connection Firewall on each PC is preventing the PC from providing resources to others on the LAN. Disable Internet Connection Firewall.









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