VB.NET

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VB.NET Interview questions and answer part 5.

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By Nishant Kumar 

Part 1 | Part 2 | Part 3 | Part 4 | part 5

Explain how to retrieve information from the configuration file at run time.  |   Define imperative and declarative security.  |   What is a shared assembly?  |   Define XCOPY deployment.  |   What is a native image?  |   What is a bootstrapper application?    

Question - Explain how to retrieve information from the configuration file at run time.
Answer - To retrieve information from the configuration file.
Create an instance of AppSettingsReader to read the configuration file.
Call the GetValue method to read values represented in the configuration file.
To add configuration file entries
Create elements in the node of the configuration file.
Specify a value for the entry and a key in the element.

Question - Define imperative and declarative security.
Answer - Imperative security is implemented by calling methods of Permission objects in code at run time. Declarative security is configured by attaching attributes representing permissions to classes and methods. Additionally, you can request assembly-wide permissions using the Assembly (assembly) directive with declarative security.

Question - What is a shared assembly?
Answer - An assembly that can be shared by multiple applications. To make an assembly a shared assembly, first assign it a strong name, and install it to the global assembly cache.

Question - Define XCOPY deployment.
Answer - It is a simple DOS command method of deployment. It copies the application directory and any subdirectories to the target machine. It is used when an application has no dependency on shared files. This method is not for complex deployment.

Question - What is a native image?
Answer - It is a precompiled version of a .NET assembly. Native image of the application can be created by using the Ngen.exe utility.

Question - What is a bootstrapper application?

Answer - A bootstrapper application automatically detects if Windows Installer is installed on the target machine. If Windows Installer is not present, it installs Windows Installer before proceeding with the rest of the installation.

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