Angular Interview Practice Exam 2025 - Free Angular Practice Questions and Study Guide

The role of a service worker in Angular is primarily to run scripts in the background, which enhances the web application’s capabilities, particularly regarding offline access and caching. Service workers are part of the Progressive Web App (PWA) standards and enable applications to manage network requests effectively, allowing them to function seamlessly even in unreliable network conditions.

When a service worker is registered, it intercepts network requests and can cache responses. This caching ability means that once a resource (like an HTML file, CSS file, or image) is fetched, it can be stored locally. This enables the application to load faster on subsequent visits and permits users to access some functionalities and content even when they are offline.

In the context of Angular, service workers improve user experience by providing a reliable and efficient way to cache static assets and APIs, ensuring that applications remain functional and fast regardless of internet connectivity. This capability is crucial for modern web applications aiming for better performance and user engagement.

The other options do not accurately describe the function of a service worker. User authentication is typically handled by various services or state management tools within the application rather than by a service worker. The compilation of TypeScript into JavaScript is a build process that occurs during the development stage, not at runtime when the