What is the purpose of Providers in NestJS?
To define database models and interact with the database
To render the user interface and manage view templates
To provide reusable logic and services that can be injected into other components
To handle routing and HTTP requests
Which of these features is NOT a primary advantage of using NestJS?
Provides a command-line interface (CLI) for easy project setup
Directly renders dynamic user interfaces in the browser
Leverages TypeScript for improved code structure and maintainability
Encourages code organization through modules and providers
How does NestJS simplify unit testing of your application's components?
NestJS's modular structure and dependency injection make it easy to isolate and test individual components
NestJS applications do not require unit tests due to their strict architecture
NestJS has built-in tools that automatically generate unit tests
NestJS relies entirely on end-to-end testing, making unit tests unnecessary
What is the role of Providers in NestJS?
To provide dependencies that can be injected into other components like controllers or services.
To render UI elements.
To define the application's entry point.
To handle data persistence.
What interface must a class implement to act as an Interceptor in NestJS?
ResponseInterceptor
HttpInterceptor
NestInterceptor
RequestInterceptor
Can you apply multiple middleware to a single route in NestJS?
No, only one middleware can be applied to a route.
Yes, but you need to create a separate middleware class that combines the functionality of others.
Yes, by using the @MultipleMiddleware() decorator.
@MultipleMiddleware()
Yes, by passing multiple middleware classes or functions to the @UseMiddleware() decorator.
@UseMiddleware()
What is the primary function of middleware in NestJS?
To define API routes.
To render dynamic views on the server.
To handle database operations.
To intercept and modify incoming requests and outgoing responses.
What is the primary programming language used for developing NestJS applications?
Python
C#
JavaScript
Java
What is the purpose of the @Res() decorator in NestJS?
@Res()
To define a new route
To access route parameters
To directly interact with the response object
To handle asynchronous operations
Which decorator is used to mark a class as a provider in NestJS?
@Module()
@Controller()
@Injectable()
@Service()