Quiz-5

What is an Angular component and its purpose?

• An Angular component is a directive that only handles routing.

• An Angular component is a reusable UI element that encapsulates its own logic, data, and view.

• An Angular component is a type of service for managing data.

• An Angular component is a global variable used in all modules.

How do you create a state in a React component?

• const state = useState(initialValue);

• const [state] = useState();

• const [state, setState] = useState(initialValue);

• setState(initialValue);

What is the role of the router in Angular applications?

• The router is responsible for compiling TypeScript code in Angular.

• The router manages user authentication in Angular applications.

• The router handles data storage in Angular applications.

• The router facilitates navigation and view management in Angular applications.

Can you explain the component lifecycle in React?

• The component lifecycle only includes Mounting and Unmounting phases.

• The lifecycle methods are only relevant during the rendering phase.

• React components do not have a lifecycle; they are static.

• The component lifecycle in React includes Mounting, Updating, and Unmounting phases with specific lifecycle methods.

What are the key features of Angular components?

• Routing and navigation

• Directives and services

• Modules and pipes

• Key features of Angular components include templates, classes, metadata, data binding, and lifecycle hooks.

How do you manage state using hooks in React?

• Use the useState hook to manage state in functional components.

• State management is not possible in functional components.

• Use the useReducer hook exclusively for managing local state.

• Use the useEffect hook to manage state in class components.

What is the difference between routerLink and navigate in Angular?

• routerLink is used for HTTP requests; navigate is for API calls.

• routerLink is for lazy loading; navigate is for eager loading.

• routerLink is a directive; navigate is a service.

• routerLink is for template links; navigate is for programmatic routing.

What are the different phases of a React component's lifecycle?

• Initialization, Execution, Termination

• Loading, Rendering, Destroying

• Mounting, Updating, Unmounting

• Creation, Modification, Deletion

How do you pass data to an Angular component?

• Directly modify the child component's properties from the parent component.

• Use @Output() to emit events from the child component.

• Use @Input() properties in the child component and bind them in the parent component's template.

• Pass data through a service injected into the child component.

What is the purpose of useEffect in React?

• The purpose of useEffect in React is to handle side effects in function components.

• To optimize rendering performance in React.

• To manage state in class components.

• To define the structure of a component's props.