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As a desktop support technician (DST), you will be required to support printers that are on a network. Many help calls are made each day when users are not able to print their documents. Companies still rely on hard copy documents to function, and con necting an individual printer to each workstation in an organization is cost prohibitive. To solve this problem, printers are connected to workstations or servers and shared with network users. Permissions may be granted to users that allow them to print, remove print jobs that have been queued, and manage printers that are added or removed from the network. As a DST, you will typically support users that are experiencing printer problems, but you will not manage printers and the permissions assigned to them. You should still have a basic understanding of the components of printing and the permissions that can be assigned to users so that you can troubleshoot and assist users experiencing printer problems. To support computers that have Windows XP Service Pack 2 installed, you must understand how Windows Firewall can affect the ability to share printers. To answer the questions in this objective, you should know how local and network printers are installed on a workstation and how permissions can be issued. You should also know the importance of printer drivers and the effect a bad printer driver can have on printing.

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ASP.NET limits the risk of providing detailed error messages by displaying them only to users logged on to the local computer. Generally, attackers won t be visiting a Web page from the console of the Web server, and as a result will not be able to view the detailed error message. However, developers and administrators still have the option of connecting to the server s console to reproduce the error. Figure 2-13 shows the error message that ASP.NET returns to users requesting the same page across the network.

System; System.Data; Microsoft.SqlServer.Server; System.Data.SqlTypes;

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The practice tests on this book s companion CD offer many options. For example, you can test yourself on just one exam objective, or you can test yourself on all the 70-686 certification exam content. You can set up the test so that it closely simulates the experience of taking a certification exam, or you can set it up in study mode so that you can look at the correct answers and explanations after you answer each question.

In addition to Show commands, you can use several Dynamic mode Netsh IPSec diag nostic commands to obtain diagnostic information, such as the following:

collection In System Center Configuration Manager, an organizational tool that enables administrators to perform tasks on a specific set of computers, users, or groups. compatibility fix A software routine that rests between an application and an operating system, translating function calls to emulate compatible versions of both entities. Also called a shim. compatibility mode A collection of compatibility fixes. Compatibility view A feature in Windows Internet Explorer that enables the browser to emulate older development standards. Customsettings.ini The main configuration file for Microsoft Deployment Toolkit 2010. Target computers read the file when they load the Windows Deployment Wizard, and the settings inside control the behavior of the wizard and the deployment process.

For details about all the practice test options available, see the How to Use the Practice Tests sec tion in this book s Introduction.

"VB Public Sub New() MyBase.New() IncrementHitCounter() End Sub Private Sub IncrementHitCounter() If Application("MyHitCounter") = Nothing Then Application.Add("MyHitCounter", 1) Else Application("MyHitCounter") = Convert.ToInt32(Application("MyHitCounter")) + 1 End If End Sub //C# public Service () { IncrementHitCounter(); } private void IncrementHitCounter() { if (Application["MyHitCounter"] == null)

User Lorrin Smith-Bates Effective Permissions Traverse Folder / Execute File List Folder / Read Data Read Attributes Read Extended Attributes Create Files / Write Data Create Folders / Append Data Write Attributes Write Extended Attributes Read Permissions

It is difficult to visualize keys because they are simply a very long series of bits, and they can t be easily expressed as a string. You can t even easily display them as a decimal integer, because the .NET Framework includes only classes that handle up to 64bit numbers, and the Rijndael, RC2, and TripleDES algorithms all support much longer keys. There are two common techniques for displaying keys: in hexadecimal, and using Base64 encoding. The following code sample displays a random Rijndael key in hexadecimal:

Developers are accustomed to seeing try/catch blocks used to surround the main part of a method, however, and a new developer would be likely to add the code within the try block, where it would be protected. However, the WindowsPrincipal.IsInRole method is typically used with conditional statements, and the new developer is likely to miss the purpose of the conditional and add the code at the end of the method, where it would be exempt from the security checks. The following pseudo-code demonstrates this:

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