Symfony Online Test

1. In Symfony, what is opcode caching, and how does it improve performance?

Opcode caching is a way to cache HTML templates. Opcode caching stores compiled PHP code in memory, reducing the need to recompile code with each request and improving execution speed. Opcode caching is used to optimize JavaScript code. Opcode caching is a form of API caching.

2. What is the Symfony console command used for generating new console commands?

php artisan make:command php bin/console generate:command symfony make:command composer require symfony/console

3. In Symfony console commands, what is the purpose of the execute() method?

To create HTML templates To define database schemas To execute the command's logic and perform the desired actions To manage API authentication

4. Symfony's Console component provides tools for building command-line applications. What is the primary class used to create console commands?

Symfony\Console\Application Symfony\Console\Command Symfony\Console\Kernel Symfony\Console\Terminal

5. In Symfony, which component allows developers to validate and sanitize data, ensuring it meets specific criteria and constraints?

Form Validator Security Console

6. Which Composer command is used to create a new Symfony project?

composer create-project symfony/skeleton my-project composer new symfony/my-project composer install symfony/skeleton my-project composer start-project symfony my-project

7. Which Symfony component is responsible for handling HTTP requests and responses?

Dependency Injection Doctrine HTTP Foundation Routing

8. In Symfony, how can you configure the logging behavior, such as log levels and destinations (e.g., file, database)?

By editing the .env file By modifying the config.yaml file By using the @Log annotation in the controller By defining log settings in the services.yaml file

9. In Symfony, how can you inject a service into a controller action?

By manually creating an instance of the service in the action By using JavaScript code By type hinting the service as an argument in the action method By editing the .env file

10. Which command is commonly used to deploy a Symfony application to a production server using Symfony Flex?

php artisan deploy php bin/console deploy symfony deploy composer deploy

11. In Symfony, how do you redirect the user to a different URL from a controller action?

By modifying the .env file By returning an instance of RedirectResponse By using JavaScript code in the view Redirects are not supported in Symfony controllers

12. Which Symfony command is used to list all defined routes in a Symfony application?

php artisan routes php bin/console route:list symfony routes:list composer show routes

13. In Symfony, what is middleware primarily used for?

To create HTML templates To handle HTTP requests and responses in a flexible and reusable way To define API routes To manage database migrations

14. What is a template variable in Symfony views?

A global variable accessible in all templates A variable defined within a controller action and passed to the template for rendering A reserved keyword for template logic A variable defined in the .env file

15. 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

16. Which Symfony component is used for optimizing and minifying CSS and JavaScript assets in Symfony applications?

Routing Form Component Asset Component Cache Component

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

src config var public

18. Symfony is written in which programming language?

Python Ruby PHP JavaScript

19. What is template inheritance in Symfony Twig templates?

A way to include external JavaScript libraries A feature that allows one template to extend or override blocks from a parent template A mechanism for routing requests to different controllers A technique for managing database migrations

20. What is the role of a Symfony API platform in API development?

To create HTML templates To manage database migrations To provide a framework for building APIs with features like automatic CRUD generation and GraphQL support To define API routes