Angular Web Framework Angular Industry Standards 4 — Questions and Answers
Question 1: What is the recommended Content Security Policy (CSP) practice for Angular applications to prevent XSS?
- Disable CSP for Angular apps
- Use Angular's built-in sanitization and set strict CSP headers server-side (Correct answer)
- Trust all HTML strings in templates
- Use innerHTML for all dynamic content
Correct answer: Use Angular's built-in sanitization and set strict CSP headers server-side
Angular's DomSanitizer combined with strict server-side CSP headers provides defense-in-depth against XSS attacks.
Question 2: Which Angular build option is recommended for production deployments to minimize bundle size?
- ng build --watch
- ng build --configuration=production (enables AOT, tree-shaking, minification) (Correct answer)
- ng serve --prod
- ng build --source-map
Correct answer: ng build --configuration=production (enables AOT, tree-shaking, minification)
The production configuration enables Ahead-of-Time compilation, tree-shaking, and minification, all critical for smaller production bundles.
Question 3: What is the industry-standard approach for internationalizing (i18n) Angular applications for the US market expanding globally?
- Hardcode English strings everywhere
- Use Angular's built-in i18n with @angular/localize or a library like ngx-translate (Correct answer)
- Use browser translation APIs only
- Store translations in a database and fetch at runtime always
Correct answer: Use Angular's built-in i18n with @angular/localize or a library like ngx-translate
Angular's @angular/localize supports compile-time i18n, while ngx-translate offers runtime flexibility — both are widely adopted standards.
Question 4: What strategy should Angular applications use for API versioning to remain industry-compliant?
- Never version APIs
- Abstract API URLs behind a configuration layer and use versioned endpoint paths (/v1/, /v2/) (Correct answer)
- Hardcode API versions in every component
- Change API URLs only in prod
Correct answer: Abstract API URLs behind a configuration layer and use versioned endpoint paths (/v1/, /v2/)
Centralizing versioned API URLs in environment files or a config service allows seamless version upgrades without touching components.
Question 5: Which pattern is the Angular standard for reactive form validation feedback to users?
- Alert boxes for each error
- Display error messages using form control's touched/dirty state combined with validation errors (Correct answer)
- Validate only on form submit
- Use browser-native validation popups only
Correct answer: Display error messages using form control's touched/dirty state combined with validation errors
Checking touched or dirty state before showing errors prevents premature validation feedback on untouched fields.
Question 6: What is the recommended approach for Angular component communication between non-parent-child components?
- Use global variables
- Use a shared service with BehaviorSubject or an NgRx store (Correct answer)
- Use window.postMessage
- Pass data through route params only
Correct answer: Use a shared service with BehaviorSubject or an NgRx store
A shared service with a BehaviorSubject (or NgRx for complex state) provides a clean, reactive channel for sibling or distant component communication.
Question 7: What is the Angular community-recommended practice for handling authentication tokens in HTTP requests?
- Attach tokens manually in every component
- Use an HTTP interceptor to automatically attach Authorization headers (Correct answer)
- Store tokens in query strings
- Send tokens only on POST requests
Correct answer: Use an HTTP interceptor to automatically attach Authorization headers
An HTTP interceptor centralizes token attachment, refreshing, and expiry handling without duplicating logic across services or components.
Angular Web Framework Angular Industry Standards 4
What is the recommended Content Security Policy (CSP) practice for Angular applications to prevent XSS?