Angular Web Framework Performance Optimization & Build Tools

Question 1

Which Angular feature delays loading a module until a user navigates to its associated route?

Accepted Answer

Lazy loading

Answer

Tree-shaking

Answer

Ahead-of-Time compilation

Answer

Pre-fetching

Question 2

What is the purpose of the Angular CLI command `ng build --configuration production`?

Accepted Answer

Compiles the app with optimizations like minification and tree-shaking

Answer

Runs unit tests

Answer

Starts the dev server

Answer

Generates new components

Question 3

Which Angular directive efficiently re-renders only changed items in a list by tracking identity?

Accepted Answer

*ngFor with trackBy

Answer

*ngIf

Answer

async pipe

Answer

*ngSwitch

Question 4

What does Ahead-of-Time (AOT) compilation do in Angular?

Accepted Answer

Compiles templates and TypeScript during the build step

Answer

Compiles templates in the browser at runtime

Answer

Defers compilation until first user interaction

Answer

Compiles only lazy-loaded modules

Question 5

Which Angular SSR strategy pre-renders pages at build time for immediate static HTML delivery?

Accepted Answer

Static site generation (prerendering)

Answer

Client-side rendering

Answer

Server-side rendering on request

Answer

Deferred loading

Question 6

What Angular pipe should you use to avoid repeated heavy computations in templates?

Accepted Answer

Pure custom pipe

Answer

async

Answer

json

Answer

Impure custom pipe