Infosys DOT NET Developer Interview Questions, Process, and Tips for Experienced

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Apti, reasoning and verbal communication

Q1. What is CLR ?
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CLR stands for Common Language Runtime, it is the virtual machine component of Microsoft's .NET framework.
• CLR is responsible for managing the execution of .NET programs.

• It provides services such as memory management, exception handling, and security.

• CLR compiles the intermediate language code into native code using Just-In-Time (JIT) compilation.

• It allows different languages to be used within the .NET framework, as lon...read more
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Q2. Difference between Kestrel and IIS
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Kestrel is a cross-platform web server while IIS is a Windows-only web server.
• Kestrel is a lightweight, open-source web server developed by Microsoft and optimized for ASP.NET Core applications.

• IIS (Internet Information Services) is a full-featured web server developed by Microsoft for Windows servers.

• Kestrel can be used as a standalone server or behind a reverse proxy like IIS or Nginx.

• IIS provides additional features...read more
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Q1. What is the Function of Object?
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The function of an object is to store data and behavior related to a specific entity in a program.
• Objects store data in the form of properties

• Objects can have methods which define behavior

• Objects can be used to model real-world entities like cars, employees, etc.

• Objects can be instantiated from classes or created dynamically
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Q2. Difference between procedure and function?
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Procedure is a set of instructions that performs a specific task, while function returns a value.
• Procedure does not return a value, while function does.

• Functions can be called from within SQL statements, while procedures cannot.

• Functions can be used in SELECT, WHERE, and HAVING clauses, while procedures cannot.

• Example: CREATE PROCEDURE myProcedure AS ... vs CREATE FUNCTION myFunction() RETURNS ...

• Example: EXECUTE myPro
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Q3. What is Aggregate function?
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Aggregate functions perform a calculation on a set of values and return a single value.
• Aggregate functions include functions like SUM, AVG, COUNT, MIN, and MAX.

• They are commonly used in SQL queries to perform calculations on groups of rows.

• For example, you can use the SUM function to calculate the total sales amount for a group of products.
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Q4. What is readonly?
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readonly keyword is used in C# to declare that a field can only be assigned a value during initialization or in a constructor.
• readonly keyword can only be used on fields, not properties.

• The value of a readonly field can only be changed in the constructor of the class.

• Using readonly fields can help ensure that certain values remain constant throughout the lifetime of an object.
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Q1. Explain mvc architecture
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MVC architecture is a software design pattern that separates an application into three main components: Model, View, and Controller.
• Model represents the data and business logic of the application

• View is responsible for displaying the data to the user

• Controller acts as an intermediary between Model and View, handling user input and updating the Model accordingly

• MVC helps in achieving separation of concerns, making the c
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Q2. Write joins in sql
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SQL joins are used to combine rows from two or more tables based on a related column between them.
• Use INNER JOIN to return rows when there is at least one match in both tables

• Use LEFT JOIN to return all rows from the left table, and the matched rows from the right table

• Use RIGHT JOIN to return all rows from the right table, and the matched rows from the left table

• Use FULL JOIN to return rows when there is a match in on
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