What are the implications of importing a module that provides a service into multiple feature modules?
- Compilation error
- Multiple service instances
- No implications
- Shared singleton service instance
Importing a module with a service into multiple feature modules results in a shared singleton service instance, allowing data to be shared.
What is the primary purpose of Dependency Injection (DI) in Angular?
- Define component behavior
- Enable two-way data binding
- Handle HTTP requests
- Manage external dependencies
The primary purpose of Dependency Injection (DI) in Angular is to manage external dependencies by providing them to a component when it's created.
The _____ method in a Route Guard is used to check whether a user can navigate to a specific route.
- canActivate
- canDeactivate
- canNavigateTo
- checkRouteAccess
The canActivate method in a Route Guard is used to check whether a user can navigate to a specific route by returning true or false based on certain conditions.
You are building a complex form that includes a dynamically generated list of items, where each item has multiple fields (e.g., name, quantity, price). How would you structure your form using Angular Reactive Forms?
- Create a FormArray to manage the list of items and use FormBuilder
- Implement a separate component for each item in the list
- Use ng-model with ng-repeat to dynamically bind form controls
- Use template-driven forms with *ngFor directive
When dealing with a dynamically generated list in Angular, you should create a FormArray to manage the list of items within a Reactive Form. This approach allows you to dynamically add and remove form controls.
The process of bundling together related capabilities into a single Angular ________ helps in organizing an application better.
- Component
- Directive
- Module
- Service
In Angular, the process of bundling related capabilities into a single Module helps in organizing an application better.
By using a custom _____ strategy, you can control which lazily-loaded modules should be preloaded in your Angular application.
- LazyLoading
- Loading
- ModuleLoading
- Preloading
By using a custom LazyLoading strategy, you can control which lazily-loaded modules should be preloaded in your Angular application. This optimizes the loading of modules.
For more complex animation sequences, Angular animations use _______ to group multiple animation steps together.
- Animation groups
- Animation keyframes
- Animation mixins
- Animation states
In Angular animations, for more complex animation sequences, Angular uses Animation groups to group multiple animation steps together. This allows you to control and manage complex animation sequences effectively.
How can you define a child route in an Angular application?
- By creating a module
- By defining it in the parent component
- By specifying loadChildren in the route configuration
- By using the ngFor directive
To define a child route in an Angular application, you specify it in the route configuration of the parent component using the loadChildren property.
What is tree-shaking and how does the Ivy Renderer enhance it in Angular applications?
- A method for optimizing CSS in Angular apps
- A process for generating random tree structures for UI components
- A technique for eliminating unused code
- A way to improve routing in Angular apps
Tree-shaking is a technique for eliminating unused code in your application. The Ivy Renderer enhances tree-shaking in Angular applications by reducing the bundle size through better dead code elimination. This is achieved by creating a more efficient rendering pipeline, which leads to smaller, optimized bundles.
What is the primary purpose of using NgRx for state management in an Angular application?
- Component rendering control
- Efficient memory usage
- Enhanced state management
- Improved SEO
The primary purpose of using NgRx for state management in an Angular application is to provide enhanced state management, making it easier to manage and share application state across components.
In an Angular application, how would you use the async pipe to ensure that a component automatically unsubscribes from an Observable when the component is destroyed?
- Manually unsubscribe in the component
- No need to unsubscribe with async pipe
- Use *ngIf in the template
- Use a try...catch block
When using the async pipe, you don't need to manually unsubscribe; it automatically handles it. There's no need to unsubscribe when using the async pipe.
How can you navigate to a different route using Angular's router?
- Using the ng-for directive
- Using the ng-model directive
- Using the ng-switch directive
- Using the router.navigate() method
You can navigate to a different route using Angular's router by using the router.navigate() method. This method allows you to programmatically navigate to a specified route.