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Subnet A contains a DHCP relay agent. If we assume that the DHCP relay agent is configured to point toward the IP address of the DHCP server on Subnet C, DHCP clients on Subnet A will be able to obtain an address from this server. Subnet B does not contain a DHCP server or a DHCP relay agent. However, the DHCP Discover broadcasts from clients on Subnet B are able to pass through the RFC 1542 compliant router (provided that BOOTP forwarding has been enabled). Therefore, the DHCP client requests on Subnet B are received by the DHCP server on Subnet C. This DHCP server can then answer these requests accordingly.

a fresh copy of Windows XP and applications. Just as there are many ways to use OPS files, there are also different ways to deploy them. The most common method is to embed them in MST files that you create with Custom Installation Wizard. You learn about this in the next section. If you want to apply settings outside the setup program in Office XP, you must run Profile Wizard separately, though. This is much more flexible than including OPS files in MST files, because it enables you to deploy different settings to different groups of users. To restore the settings from an OPS file to the user's profile, run the following command while logged on to Windows XP as that user:

Overall DNS server performance statistics, such as the number of overall queries and responses processed by a DNS server UDP or TCP counters, for measuring DNS queries and responses that are pro cessed using either of these transport protocols Dynamic update and secure dynamic update counters, for measuring registration and update activity generated by dynamic clients Memory usage counters, for measuring system memory use and memory alloca tion patterns created by operating the server computer as a DNS server running Windows Server 2003 Recursive lookup counters, for measuring queries and responses when the DNS Server service uses recursion to look up and fully resolve DNS names on behalf of requesting clients

To complete the lessons in this chapter, you must have: A computer that meets or exceeds the minimum hardware requirements listed in the introduction at the beginning of the book. Any edition of Microsoft Visual Studio 2008 (including Microsoft Visual C# 2008 Express Edition or Microsoft Visual Basic 2008 Express Edition) installed on the computer.

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Correct Answers: B A. Incorrect: Although the /debug[level]:[filename] syntax is correct, debug level 7 is not a valid option. B. Correct: The /debug[level]:[filename] syntax is correct, and debug level 4 is the highest level of debugging available. Possible options vary from 0 to 4; 0 represents severe errors, 1 represents errors, 2 represents warnings, 3 represents informational messages, and 4 represents very detailed information. Naturally, each higher level of debugging includes information from all lower levels.

The component is the building block of a .NET application. Some components are built inhouse, some are purchased from third-party companies, and some are a combination of the two extensions built in-house from purchased components. All of this sounds not only simple but also familiar. Developers have been given these choices for years, going back to at least the early days of Visual Basic and beyond. But there is still a choice to be made. Make, buy, or extend are still issues that need to be addressed. And if you choose to make, what needs to be done to make sure that you can extend later on, as need be The goal of this chapter is to consider not only the reasons for making the build, buy, or extend choice, but also how to design your own components to be part of future decisions of the same nature.

In addition to creating shares and copying files to their Public folder structure, copying files to removable media, or e-mailing them to each other, users can share information by using the following methods: