Angular Interview Practice

What happens after the root module is bootstrapped?

1. Angular initiates the testing phase

2. Angular loads the root component and renders it in the DOM

3. Angular starts compiling service classes

4. Angular unloads unnecessary modules

The correct answer is: Angular loads the root component and renders it in the DOM

When the root module is bootstrapped in Angular, the framework begins the process of loading the root component defined in that module. This component is the first one to be rendered and is crucial because it serves as the entry point of the application. Upon bootstrapping, Angular initializes this root component and inserts it into the DOM, which signifies that the application has started and is ready to interact with the user. The other options discuss actions that do not occur immediately after bootstrapping the root module. For instance, Angular does not initiate a testing phase right after bootstrapping; testing is a separate aspect often conducted in different environments. Compiling service classes typically happens during the module evaluation process but is not a direct result of bootstrapping. Additionally, the unloading of unnecessary modules is not an action taken during bootstrapping; rather, Angular manages module dependencies based on the application's requirements during the build process.