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When you search an unindexed location, an Information Bar appears to warn you that the search is likely to be slow. You can click the Information Bar to add your current search target to the index. (See Adding Folders to the Index, later in this chapter.) Be aware that just adding the folder to the index won t make the search any quicker until the system has had time to update the index. Searching for Content in Unindexed Locations After the search engine has finished performing a search on an unindexed location, it will display a link at the bottom of the search results, asking if you would like to continue your search into the contents of files in this location:

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To address these and other concerns, asymmetrical cryptography (also called public key cryptography) was developed. This method uses a pair of keys for each communication that are mathematically related to one another. The idea is that it is impossible to determine the value of one of the keys by examining the other. One of the keys is private to a particular entity, and is never shared with anyone. The other key is public, and is freely available to anyone who wants it. Data encrypted with the private key can only be decrypted

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Searching for Hidden and System Files The search engine ordinarily excludes system folders, even when you re searching unindexed locations. If you re hunting for a critical system file, that default will frustrate you. Click the Include Non-Indexed, Hidden, And System Files (Might Be Slow) check box to override it. To change the default, choose Organize, Folder And Search Options in Windows Explorer. On the Search tab of the Folder Options dialog box (see Figure 7-19 earlier in this chapter), select Include System Directories.

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Windows Vista cannot index server shares, and searching a server without indexing can be excruciatingly slow . But if Windows Vista is running on the server and the folder you re interested is included in the remote computer s index, the search engine on your computer will query the remote index before beginning a file-by-file ( grep ) search . If the server is not running Windows Vista, you can speed up a search of remote files by making them available offline . When you right-click the remote folder in Windows Explorer and choose Always Available Offline, Windows caches that folder on your system, and adds the cached copy to the index . As soon as the system has finished indexing your offline files, you ll be able to search them as quickly as you can search your local documents . (Note: offline files are not available in Windows Vista Home Basic or Windows Vista Home Premium .)

Windows Azure assigns a single DNS name (for example, tailspincloudappnet).

If you don t fancy Boolean formulations, try the natural-language approach to searching. With natural language enabled, the search engine promises to accept queries in plain English (see Figure 7-26). The system looks for key words (like e-mail ), filters out prepositions (such as from ), handles conjunctions without making you capitalize them, and assumes the rest of what you type consists of property values that it should try to match.

Figure 7-26 With natural language searching, you can forget about Boolean operators and express yourself in plain English.

with the public key, and vice versa. This can solve the problem of initiating secure dialogs and eliminate the security risk of sharing symmetrical keys among parties. One key benefit of asymmetrical cryptography is the ability to create digital signatures. A digital signature is a message digest, similar to a checksum. It is based on the original contents of a message and is created using the message sender s private key. A digital signature, once verified, guarantees that a message originated from the specified sender and has not been altered during transmission. The use of digital signatures is especially important in banking applications, to facilitate nonrepudiation by financial account holders. (Nonrepudiation means that the originator of a transaction cannot later claim that someone else had used his or her account fraudulently and refuse to accept responsibility for the transaction.)

To turn natural language searching on, choose Organize, Folder And Search Options in Windows Explorer. In the Folder Options dialog box, click the Search tab. On the Search tab (see Figure 7-19 earlier in this chapter), select Use Natural Language Search.

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