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For more information about EXBPA, click The Exchange Best Practices Analyzer Help in the left-hand pane of the Microsoft Exchange Best Practices Analyzer Wizard or access http://go.microsoft.com/ fwlink/ LinkId=33938.

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By now, you understand that you need to get your hands on an ILocation interface. So let s get one. Before using the Location API interface, you must first call the COM CoCreateInstance method to create an instance of the ILocation interface. The code is really simple, as shown in the following code snippet:

Correct Answers: B A. Incorrect: Typing ipconfig at the command prompt displays basic TCP/IP infor mation that shows the IP address, subnet mask, and default gateway for each connection. However, it does not display DNS server information. B. Correct: Typing ipconfig /all at the command prompt displays detailed TCP/IP information, including the DNS servers configured for all connections. C. Incorrect: There is no /dns switch available for the ipconfig command. D. Incorrect: There is no /servers switch available for the ipconfig command.

In SCCM, a collection is an organizational tool that enables administrators to perform tasks on a specific set of computers, users, or groups. To perform a ZTI deployment, you must add the target computers that you want to deploy to a collection. The computers in the collection then receive an advertisement from SCCM that informs them of the installation to be completed. To create a collection, browse to the Site Database/Computer Management/Collections folder in Configuration Manager. The console includes a number of preconfigured collections, but you can add as many new ones as you need. Right-click the Collections folder and, from the context menu, select New Collection. This launches the New Collection Wizard, which in turn launches the Create Direct Membership Rule Wizard, which you can use to select computers in the database by searching for specific attribute values, such as names and MAC addresses, as shown in Figure 7-36.

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Lesson Review . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21

Subnetting an IP Network Number Subnetting is the process of dividing a single IP network number into multiple IP networks by modifying the subnet mask value. When a subnet mask is modified from the default, it changes how TCP/IP devices interpret the network number and the host ID portion of an IP address. For example, if a subnet mask of 255.255.255.0 is applied to the Class B IP network address of 172.16.0.0, the first three bytes (172.16.0) are interpreted as network num ber, and only the last byte is interpreted as host ID. It is still a Class B address, but the third byte of this address can now be used to define several subnetworks, or subnets, that each support fewer host IDs. In this example, up to 254 subnets can be defined, each with up to 254 host IDs. Table 10-4 outlines the first few ranges of the subnet information for this example. When looking at this table, pay close attention to the third octet because that is where the subnetting occurs.

Remote Assistance can eliminate the need for administrative personnel to travel to a user s location for any of the following reasons: