Explain the purpose of the GROUP BY operator in SQL and when it is used.
Junior — Middle
333
C#
What is the purpose of overriding the equals method in a class?
Junior — Middle
332
What types of type casting exist in C#?
Junior
331
What methods ensure dependency injection in the code?
Junior — Middle
331
How to determine before the last element in a singly linked list?
Junior — Middle
331
What are the disadvantages of microservice architecture?
Middle+
331
What happens to program execution after receiving the result of an asynchronous operation?
Junior — Middle
331
What is the concept of garbage collection in C#?
Junior
331
What data type is most optimal for storing and working with monetary values?
Middle
331
What are events in C#?
Junior
331
Can you describe the main principles and standards for writing tests?
Junior — Middle
330
What are the approaches to database design?
Middle
330
Can you explain the mechanism of the IEnumerable interface and its application?
Intern — Middle
330
Why do we use Dictionary if we have a List?
Junior
330
How do you work with data models in your projects?
Middle
330
Why is it necessary to use an API between the database and the client application?
Junior
330
What is a deadlock in code?
Middle
330
Did you have a military ID?
Junior — Middle
329
What is the difference between var and dynamic in C#?
Middle
329
What types of authentication exist?
Junior
329