NET 121- Essentials of Networking

Review for third test (Chapters 11 - 14)
  1. What is a hosts file for?

  2. How do you put a documentation line in a hosts file?

  3. What would be in the first column of a data line in a hosts file?


    What would be in the second column?


    Must there be a third?

  4. How is an lmhosts file different from a hosts file?

  5. What is the name of the folder that a hosts file is usually found in?

  6. What does a DNS server do?

  7. What is a DNS resolver?

  8. Explain what a top-level DNS domain is, using two examples.

  9. How long can a domain name be?


    How long can any label in it be?

  10. What is WINS?


    Does WINS do the same thing as DNS?

  11. What is a firewall for in a network?

  12. What decisions does a packet filtering firewall make?


    What aspect of the packet might the firewall look at to make its decision?

  13. What would make a server "dual-homed"?

  14. What makes a server "fortified"?

  15. Why do some network addressing schemes require you to use Network Address Translation?


  16. If a proxy server is providing NAT service, how many IP addresses should it have?

  17. What is the ARP protocol for?

  18. What information would you expect to find in an ARP table?

  19. What does the hostname command tell you?

  20. On what kind of computer would you use IPCONFIG?

    What kind requires you to use WINIPCFG?

    What kind of computer requires you to use IFCONFIG?

  21. What is PING used for?


    What is the difference between PING and NSLOOKUP?

  22. What arguments will the PING command accept?

  23. What is the TRACERT command for?

  24. Why do we use the Telnet program?

  25. What is FTP used for?


    Which of the two modes for FTP is preferred?

  26. Which version of Windows NT ran on client computers?

  27. Which version of NT was recommended for servers that run mission critical applications?

  28. Which version of Windows 2000 is meant for workstations?

  29. List the 3 versions of Windows 2000 Server, and note how many GB of RAM each supports.

  30. What is Microsoft Management Console?

  31. Which version of Windows Server 2003 is meant for workstations?

  32. List the versions of Windows Server 2003 and note how many GB of RAM each supports.

  33. Which version of Windows Server 2003 is meant for mission critical application servers?

  34. Which version of Windows was the first to use Active Directory?

  35. What company sells NetWare? What NetWare feature is the equivalent of Active Directory?

  36. What protocol suite was required on NetWare networks before NetWare 5?

  37. What is the default network administrator ID on a Windows network? What is it on a Novell network? What is it on a UNIX network?

  38. What unusual prejudice does UNIX have about cases?

  39. What operating system is like an open source version of UNIX? Who created it?

  40. You can successfully ping another computer by IP address but not by its computer name. Which utility can you use to check for possible problems with WINS name resolution?
    A. NBTSTAT
    B. ROUTE
    C. NSTAT
    D. WINIPCFG

  41. Which TCP/IP utility is used to determine whether a remote computer is reachable by sending it multiple ICMP echo requests?
    A. ARP
    B. PING
    C. TELNET
    D. IPCONFIG
    E. WINIPCFG

  42. Your network has a connection to the Internet. Your network includes a Web server and an SMTP server. You are concerned about Internet hackers. You set up filtering on your Internet router. Your users can no longer access their external POP3 accounts. What is the most likely cause of the problem?
    A. Your DHCP server is down.
    B. Your Internet router is blocking port 25.
    C. Your Internet router is blocking port 110.
    D. Your Web server is filtering mail requests.