You're building an e-commerce application and want to create a nested navigation structure where product categories have sub-categories. How would you design the routing for this scenario using child routes?
- Configure named outlets for sub-categories
- Define child routes within the parent component
- Implement a shared module for navigation
- Use auxiliary outlets for sub-categories
To create nested navigation with sub-categories, you should define child routes within the parent component. This allows for a hierarchical structure in your routing.
What is the purpose of a Form Group in Angular Reactive Forms?
- Define form submission actions
- Define form validation rules
- Group related form controls
- Store form control values
The purpose of a Form Group in Angular Reactive Forms is to group related form controls together. It helps manage and validate a set of related form controls.
Angular Universal generates _____ pages to improve the initial load time of an application.
- Client-side
- Dynamic
- Server-side
- Static
Angular Universal generates server-side pages to improve the initial load time of an application.
When using Dependency Injection in Angular, what is the significance of the @Injectable() decorator?
- It creates a new instance of the service
- It handles routing in Angular
- It injects a service into a component
- It marks a service as singleton
The @Injectable() decorator is used to mark a service as a singleton, meaning that Angular will create a single instance of the service and share it across components that request it.
You need to test an Angular service that makes HTTP requests to an API. You want to ensure your tests are isolated and do not actually make HTTP calls. What approach would you take?
- Creating a Custom Testing Library for HTTP Mocking
- Mocking HTTP Requests using HttpClientTestingModule
- Performing Real HTTP Calls with HttpClient
- Using Angular's TestBed for Service Testing
To isolate tests and avoid making actual HTTP calls, you should use Mocking HTTP Requests using HttpClientTestingModule to mock the HTTP responses.
When debugging Protractor tests, you can insert a call to _____ to pause the test execution.
- browser.breakpoint()
- browser.debugger()
- browser.hold()
- browser.pause()
For debugging Protractor tests, you can insert a call to browser.pause() to pause test execution at that point.
The Ivy Renderer introduces a new concept called _____ which is designed to be more efficient in updating the DOM.
- Change Detection
- Render Optimization
- Template Engine
- Virtual DOM
The Ivy Renderer introduces a new concept called Render Optimization, designed to be more efficient in updating the DOM. This improves performance by optimizing how changes are applied to the view.
In NgRx, the _____ is responsible for changing the state based on the action received.
- Dispatcher
- Effect
- Reducer
- Selector
In NgRx, the Reducer is responsible for changing the state based on the action received. A reducer defines how the state should change.
How can you preload some, but not all, of the lazily-loaded modules in an Angular application?
- It's not possible
- Setting the 'preload' property
- Using canActivateChild guard
- Using the preloadStrategy
You can preload some, but not all, of the lazily-loaded modules in Angular by specifying the preloadStrategy in the route configuration.
When using NgRx, how can you prevent unnecessary re-rendering of components when the state changes?
- Use ChangeDetectionStrategy.OnPush
- Use ChangeDetectorRef.markForCheck
- Use pure pipes
- Use the async pipe
In NgRx, you can prevent unnecessary re-rendering of components by using ChangeDetectionStrategy.OnPush to only update components when necessary.