.NET Questions

Q:

What is the role of the JIT compiler in .NET Framework?

Answer

The JIT compiler is an important element of CLR, which loads MSIL on target machines for execution. The MSIL is stored in .NET assemblies after the developer has compiled the code written in any .NET-compliant programming language, such as Visual Basic and C#.

JIT compiler translates the MSIL code of an assembly and uses the CPU architecture of the target machine to execute a .NET application. It also stores the resulting native code so that it is accessible for subsequent calls. If a code executing on a target machine calls a non-native method, the JIT compiler converts the MSIL of that method into native code. JIT compiler also enforces type-safety in runtime environment of .NET Framework. It checks for the values that are passed to parameters of any method.

For example, the JIT compiler detects any event, if a user tries to assign a 32-bit value to a parameter that can only accept 8-bit value.

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Subject: .NET - Technology

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Q:

This events sends the web page to the server for processing. Web page sends data back to the

same page on the server.
Which among the following events does the above stated task?

A) Validation events B) Cached events
C) Postback events D) None
 
Answer & Explanation Answer: C) Postback events

Explanation:

Postback events does the bove stated task

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Q:

What are the benefits of using of ADO.NET in .NET 4.0.

Answer

The following are the benefits of using ADO.NET in .NET 4.0 are as follows:

 =>   Language-Integrated Query (LINQ) - Adds native data-querying capabilities to .NET languages by using a syntax similar to that of SQL. This means that LINQ simplifies querying by eliminating the need to use a separate query language. LINQ is an innovative technology that was introduced in .NET Framework 3.5.
 =>   LINQ to DataSet - Allows you to implement LINQ queries for disconnected data stored in a dataset. LINQ to DataSet enables you to query data that is cached in a DataSet object. DataSet objects allow you to use a copy of the data stored in the tables of a database, without actually getting connected to the database.
=>   LINQ to SQL - Allows you to create queries for data stored in SQL server database in your .NET application. You can use the LINQ to SQL technology to translate a query into a SQL query and then use it to retrieve or manipulate data contained in tables of an SQL Server database. LINQ to SQL supports all the key functions that you like to perform while working with SQL, that is, you can insert, update, and delete information from a table.
=>   SqlClient Support for SQL Server 2008 - Specifies that with the starting of .NET Framework version 3.5 Service Pack (SP) 1, .NET Framework Data Provider for SQL Server (System.Data.SqlClient namespace) includes all the new features that make it fully compatible with SQL Server 2008 Database Engine.
=>   ADO.NET Data Platform - Specifies that with the release of .NET Framework 3.5 Service Pack (SP) 1, an Entity Framework 3.5 was introduced that provides a set of Entity Data Model (EDM) functions. These functions are supported by all the data providers; thereby, reducing the amount of coding and maintenance in your application. In .NET Framework 4.0, many new functions, such as string, aggregate, mathematical, and date/time functions have been added.

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Subject: .NET - Technology

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Q:

What are the different implementations of LINQ?

Answer

The different implementations of LINQ are:


      =>  LINQ to SQL - Refers to a component of.NET Framework version 3.5 that    provides a run-time infrastructure to manage relational data as objects.

      =>   LINQ to DataSet - Refers to a component that makes it easier and faster to query over data cached in a DataSet object.

      =>   LINQ to XML - Provides an in-memory XML programming interface.

      =>  LINQ to Objects - Refers to the use of LINQ queries with any IEnumerable or IEnumerable(T) collection directly, without the use of an intermediate LINQ provider or API, such as LINQ to SQL or LINQ to XML.

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Q:

Explain ADO.NET in brief.

Answer

ADO.NET is a very important feature of .NET Framework, which is used to work with data that is stored in structured data sources, such as databases and XML files. The following are some of the important features of ADO.NET:

 =>   Contains a number of classes that provide you with various methods and attributes to manage the communication between your application and data source.


 =>   Enables you to access different data sources, such as Microsoft SQL Server, and XML, as per your requirements.


 =>   Provides a rich set of features, such as connection and commands that can be used to develop robust and highly efficient data services in .NET applications.


 =>   Provides various data providers that are specific to databases produced by various vendors. For example, ADO.NET has a separate provider to access data from Oracle databases; whereas, another provider is used to access data from SQL databases.

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