Interviews in VB.NET

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Interviews
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The following is a list of company personnel interviewed and their statements.
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Information Technology (IT) Manager
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Right now, your application connects to a Microsoft SQL Server 2005 database at db.fabrikam.com. Both the name and the database platform are going to change in the next couple of weeks, though. They might change after that, too. So, we d like the ability to configure the database server. Preferably, the configuration settings would be in a text or XML file. Several other applications connect to the same server, and if possible, we d like to configure database settings for all applications in a central location so we can change it in a single place. Depending on employees levels and roles, your application needs to show them different options. I d like the IT department to be able to configure those settings on individual computers, rather than having the settings stored in the database.
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Finance Manager
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Questions
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Answer the following questions for your manager: 1. How can you allow the IT department to configure which database server your application connects to 2. How can you allow the IT department to configure an employee s level and role 3. Should you store the settings in the application s .config file or the Machine.config file
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9 Review
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Case Scenario 2: Installing an Application
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You are an application developer working for Humongous Insurance. At the request of your IT department, you have developed an assembly that performs automated network troubleshooting tasks. To make the assembly easy to deploy, IT has requested that it be deployable as a single .exe file. However, IT would like the option of installing it with a shortcut on the desktop and the Start menu. They would like to be able to install it using a Windows Installer package or directly from the assembly s .exe file.
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Questions
Answer the following questions for your manager: 1. How can you meet the requirements to install the application using a Windows Installer package 2. How can you allow the assembly to install itself from within the .exe file
Suggested Practices
To master the Embedding Configuration, Diagnostic, Management, and Installation Features into a .NET Framework Application exam objective, complete the following tasks.
Embed Configuration Management Functionality into a .NET Framework Application
For this task, you should complete all three practices.
Practice 1
Using the last real-world application you wrote, add customizable settings using a .config file stored in the assembly s installation folder. Create an application that updates configuration data in a folder that standard users on Windows Vista have privileges to update.
Practice 2
Practice 3
Using the last real-world application you wrote that connects to a database, update it to read the connection string from either the Machine.config file or the application s .config file. Make the code flexible enough so that it can connect to a variety of different database platforms.
9 Review
Create a Custom Microsoft Windows Installer for the .NET Framework Components by Using the System.Configuration.Install Namespace, and Configure the .NET Framework Applications by Using Configuration Files, Environment Variables, and the .NET Framework 2.0 Configuration Tool (Mscorcfg.Msc)
For this task, you should complete all three practices.
Practice 1
Using the last real-world application you wrote that included a Setup project, re-create the Setup project s functionality using a custom installer. Install and uninstall the application using InstallUtil.exe and verify that it works correctly. Create a custom installer for an application. By restricting security settings so that a required file cannot be created or a required registry setting cannot be updated, cause the installation to fail midway. Verify that the Rollback method correctly removes any traces of the application installation. Add a class library assembly to your computer s assembly cache. Then reference it from a different project.
Practice 2
Practice 3
Take a Practice Test
The practice tests on this book s companion CD offer many options. For example, you can test yourself on just the content covered in this chapter, or you can test yourself on all the 70-536 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.
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