Angular Modules Questions

This post lists some subjective questions and answers related to Angular Modules. This collection contains some potential interview questions that may be helpful if you are preparing for a Frontend Engineering job interview specific to Angular framework. Check out Angular Interview.

1. What is an Angular module?

An Angular module is a container for a cohesive block of code dedicated to an application domain, workflow, or a closely related set of capabilities. It organizes related components, directives, pipes, and services.

2. How do you create a module in Angular?

You can create a module using the Angular CLI command: ng generate module module-name or ng g m module-name.

3. What is the root module in Angular?

The root module, typically named AppModule, is the main module that bootstraps the Angular application. It is defined in app.module.ts.

4. What are the different types of modules in Angular?

There are several types of modules, including:

• Root Module: The main module that bootstraps the application.
• Feature Modules: Modules that encapsulate specific functionality.
• Shared Modules: Modules that export common components, directives, and pipes to be used across multiple modules.
• Core Module: A module that contains singleton services and is typically imported only in the root module.

5. What is the purpose of the imports array in a module?

The imports array is used to import other Angular modules so that the components, directives, and pipes declared in those modules can be used in the current module.

6. What is the purpose of the exports array in a module?

The exports array is used to make components, directives, and pipes available to other modules that import the current module.

7. What is a lazy-loaded module?

A lazy-loaded module is a feature that allows you to load a module only when it is needed, improving the application’s initial load time. This is typically set up using Angular’s Router.

8. How do you declare a module in Angular?

A module is declared using the @NgModule decorator, where you specify the metadata such as declarations, imports, exports, and providers.

9. What is the providers array in an Angular module?

The providers array is used to register services that can be injected into components and other services within the module.

10. Can a module import another module?

Yes, a module can import another module by including it in the imports array of the @NgModule decorator.

These are a few questionnaires specific to Angular Modules. I will be adding more questions and answers to this post. To know more please refer to the Official documentation on Angular Modules.