Symfony Online Test

1. In Symfony, what is a subscriber in the context of event handling?

A person who subscribes to a newsletter A listener that is registered to listen to specific events and can be reused across different parts of an application A user who logs in to the application A type of middleware

2. What is the primary purpose of routing in Symfony?

To create HTML templates To map URLs to controller actions To manage database migrations To define API routes

3. In Symfony, what is the primary purpose of error handling?

To create HTML templates To gracefully handle and report errors that occur during the execution of an application To define API routes To manage database migrations

4. What is the Symfony Dependency Injection Container responsible for?

To create HTML templates To manage database migrations To store and manage service definitions and their dependencies To define API routes

5. Which directory contains the application's configuration files, such as services.yaml and routes.yaml?

src config var public

6. In Symfony, what is the purpose of the HTTP Cache and how does it work?

To create HTML templates To manage database migrations To store cached HTTP responses and serve them based on HTTP caching headers (e.g., ETag, Last-Modified) To define API routes

7. In Symfony, when is the kernel.controller event typically dispatched?

Before handling a request After handling a request During form submission Only when an error occurs

8. Which Symfony component is responsible for loading and executing controller actions?

Dependency Injection Routing HTTP Kernel Event Dispatcher

9. Which HTTP status code is typically used in Symfony controllers to indicate a successful response?

200 (OK) 404 (Not Found) 500 (Internal Server Error) 302 (Found)

10. Which caching strategy involves storing a copy of the entire rendered HTML output of web pages and serving that copy to subsequent users to reduce server load?

Page caching Object caching Opcode caching Session caching

11. Which authentication provider is commonly used in Symfony to authenticate users against a database table?

LDAP OAuth DatabaseProvider GitHub

12. What is the purpose of the Symfony Profiler Toolbar?

To create HTML templates To manage database migrations To provide insights into the performance and behavior of requests, including executed events and middleware To define API routes

13. What is the primary purpose of Symfony Flex in Symfony applications?

To create HTML templates To simplify the management of Symfony applications by automating common tasks, such as package installation and configuration To define API routes To manage database migrations

14. Which Symfony security feature ensures that certain parts of an application are only accessible to authorized users or roles?

Form validation Routing configuration Access control Database schema

15. What is the purpose of Symfony's service aliases?

To create HTML templates To manage database migrations To provide alternative names for services, making them easier to reference and inject To define API routes

16. In Symfony forms, how can you define validation rules for form fields?

By using JavaScript code By configuring validation constraints as annotations, YAML, XML, or PHP options By adding HTML attributes to form fields By modifying the .env file

17. Which command is used to list all registered event listeners and subscribers in a Symfony application?

php artisan event:list php bin/console debug:event-dispatcher symfony event:register composer show event-listeners

18. What is the primary purpose of the Symfony Event Dispatcher component?

To create HTML templates To manage database migrations To dispatch and listen for events within an application To define API routes

19. What is the recommended directory structure for deploying a Symfony application?

A single directory containing all application files A structure that mirrors the development environment, including development tools and files A directory structure that separates application code from public assets and configuration There is no recommended structure; it depends on the developer's preference

20. What is a DQL (Doctrine Query Language) in Symfony Doctrine ORM?

A JavaScript library A configuration file A domain-specific language for querying objects stored in the database A type of routing