Globant Senior .NET Developer Interview Questions and Answers for Freshers

Single returns the only element of a sequence, or a default value if the sequence is empty. First returns the first element of a sequence, or a default value if the sequence contains no elements.

• Single throws an exception if the sequence contains more than one element, while First does not.

• Single is useful when you expect only one element in the sequence, while First is used when you just need the first element.

• Example...read more

ref is used for passing a variable by reference, out is used for returning a value from a method

• ref keyword is used to pass a variable by reference, allowing the method to modify the variable

• out keyword is used to return a value from a method, the variable passed must be assigned a value within the method

• ref parameters must be initialized before passing to the method, out parameters do not need to be initialized

Design patterns are reusable solutions to common problems in software design. DI stands for Dependency Injection, a design pattern used to inject dependencies into a class.

• Design patterns are best practices for solving common software design problems.

• DI is a design pattern where dependencies are injected into a class rather than created within the class.

• Examples of design patterns include Singleton, Factory, and Observ...read more

Microservices are a software architecture design where applications are broken down into smaller, independent services that communicate with each other through APIs.

• Microservices are designed to be small, focused, and independently deployable services.

• Each microservice typically performs a single function or task within the application.

• Microservices communicate with each other through APIs, often using lightweight prot...read more

Find indexes of two values in an array whose sum is 8 or a dynamic value

• Iterate through the array and store the indexes of each element in a dictionary with the difference between the target sum and the element as the key

• Check if the current element exists in the dictionary, if so, return the indexes of the two elements

• Handle cases where the target sum is dynamic by replacing 8 with a variable

ORM stands for Object-Relational Mapping, a technique used to map object-oriented programming language to a relational database.

• ORM helps developers to work with databases using objects instead of SQL queries

• It simplifies the data access layer by automatically translating objects into database tables and vice versa

• Popular ORM frameworks in C# include Entity Framework, NHibernate, and Dapper

CLR stands for Common Language Runtime, a virtual machine component of the .NET framework responsible for managing execution of .NET programs.

• CLR is responsible for managing memory, handling exceptions, and enforcing security in .NET applications.

• It provides services such as garbage collection, type safety, and code access security.

• CLR compiles Intermediate Language (IL) code into native code during execution.

• Examples

Dot net core is the open-source, cross-platform version of .NET, while .NET is the traditional framework for Windows applications.

• Dot net core is open-source and cross-platform, allowing for development on Windows, macOS, and Linux.

• .NET is the traditional framework for Windows applications, providing a wide range of libraries and tools.

• Dot net core is more lightweight and modular, making it easier to deploy and maintai...read more

Errors in SQL can be handled using try-catch blocks, error handling functions, and logging mechanisms.

• Use try-catch blocks to catch and handle errors in SQL queries

• Utilize error handling functions like @@ERROR, ERROR_MESSAGE(), and ERROR_NUMBER() to retrieve error information

• Implement logging mechanisms to track and monitor errors for troubleshooting

• Consider using transactions to ensure data integrity and rollback chan