Drupal Study Guide

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Acquia Certified Drupal 10 Developer ​

Self Evaluation Answers ​

Answer Key ​

1. What type of architecture does Drupal use?

Answer: D. Modular
Explanation: Drupal employs a modular architecture, allowing developers to extend and customize functionality by enabling or creating modules.
Reference: [1.1. Concept: Drupal as a Content Management System](https://www.drupal. org/docs/user_guide/en/understanding-drupal.html)

2. Which of the following is NOT a standard Drupal content entity?

Answer: C. Plugin
Explanation: In Drupal, standard content entities include nodes, users, and blocks. Plugins are a design pattern used to extend functionality but are not content entities.
Reference: [Plugin API overview](https://www.drupal. org/docs/drupal-apis/plugin-api/plugin-api-overview) & 2.3. Concept: Content Entities and Fields

3. In Drupal, which component is responsible for defining a new content type?

Answer: D. Bundle
Explanation: A bundle is a subtype of an entity type. In Drupal, content types are bundles of the node entity type.
Reference: Bundles

4. What is the primary function of the Entity API?

Answer: B. Handling structured content storage and retrieval
Explanation: The Entity API in Drupal manages the storage, loading, and handling of structured data entities.
Reference: [Introduction to Entity API in Drupal 8](https://www.drupal. org/docs/drupal-apis/entity-api/introduction-to-entity-api-in-drupal-8)

5. Which of the following statements about Taxonomy in Drupal is TRUE?

Answer: C. Taxonomies are used to categorize content using Terms and Vocabularies.
Explanation: Drupal's Taxonomy system categorizes content using vocabularies (groups of terms) and terms (individual items within a vocabulary).
Reference: [Taxonomy module overview](https://www.drupal. org/docs/8/core/modules/taxonomy/taxonomy-module-overview)

6. Which module is used to configure and display views in Drupal?

Answer: B. Views module
Explanation: The Views module allows users to create, manage, and display lists of content.
Reference: 9.1. Concept: Uses of Views

7. What templating system does Drupal use for rendering HTML output?

Answer: B. Twig
Explanation: Drupal uses the Twig templating engine for rendering HTML, providing a secure and flexible way to manage templates.
Reference: [Working With Twig Templates](https://www.drupal. org/docs/develop/theming-drupal/twig-in-drupal/working-with-twig-templates)

8. Where are theme .twig files stored in a custom Drupal theme?

Answer: B. /themes/{theme_name}/templates/
Explanation: In a custom Drupal theme, Twig template files are typically stored in the templates directory within the theme's folder.
Reference: [Working With Twig Templates](https://www.drupal. org/docs/develop/theming-drupal/twig-in-drupal/working-with-twig-templates)

9. Which hook is used to preprocess variables before rendering a template in Drupal?

Answer: A. hook_preprocess_HOOK()
Explanation: The hook_preprocess_HOOK() functions are used to modify variables before they are passed to the theme layer for rendering.
Reference: [Twig best practices - preprocess functions and templates](https://www.drupal. org/docs/theming-drupal/twig-in-drupal/twig-best-practices-preprocess-functions-and-templates)

10. How can you override a specific block template in a custom theme?

Answer: A. Create a file named block--{machine-name}.html.twig in the templates folder.
Explanation: To override a specific block's template, create a Twig file named block--{machine-name} .html.twig in your theme's templates directory, replacing {machine-name} with the block's machine name.
Reference: [Working With Twig Templates](https://www.drupal. org/docs/develop/theming-drupal/twig-in-drupal/working-with-twig-templates)

11. Which Drupal API is used to interact with configuration settings?

Answer: B. Config API
Explanation: The Config API manages configuration data, allowing modules to store and retrieve configuration settings.
Reference: [Simple Configuration API](https://www.drupal. org/docs/drupal-apis/configuration-api/simple-configuration-api)

12. Which method retrieves a configuration value in Drupal?

Answer: B. \Drupal::config()->get()
Explanation: The \Drupal::config()->get() method is used to retrieve configuration values in Drupal.
Reference: [Simple Configuration API](https://www.drupal. org/docs/drupal-apis/configuration-api/simple-configuration-api)

13. Which Drupal API is responsible for handling structured data storage and retrieval?

Answer: C. Entity API
Explanation: The Entity API manages the storage and retrieval of structured data entities in Drupal.
Reference: [Introduction to Entity API in Drupal 8](https://www.drupal. org/docs/drupal-apis/entity-api/introduction-to-entity-api-in-drupal-8)

14. Which hook is used to alter the render array of a block before it is displayed?

Answer: B. hook_block_view_alter()
Explanation: The hook_block_view_alter() function allows developers to modify the render array of a block before it is rendered.
Reference: [Block API](https://api.drupal.org/api/drupal/core!modules!block!block.api. php/group/block_api/10)

15. Which caching mechanism should be used to store temporary data that does not need to persist across page reloads?

Answer: B. State API
Explanation: The State API is designed for storing temporary, non-persistent data that is specific to a particular environment and does not need to be synchronized across different environments. It is suitable for data that may change frequently and does not need to persist across page reloads.
Reference: [State API Overview](https://www.drupal. org/docs/develop/drupal-apis/state-api/state-api-overview)

16. Which of the following is the correct way to define a custom module in Drupal?

Answer: A. Create a .info.yml file inside the modules/custom/{module_name}/ directory
Explanation: To define a custom module in Drupal, you need to create a directory named after your module in modules/custom/ and include a {module_name}.info.yml file within that directory. This file provides metadata about the module, such as its name, type, description, and package.
Reference: [Let Drupal know about your module with an .info.yml file](https://www.drupal. org/docs/develop/creating-modules/let-drupal-know-about-your-module-with-an-infoyml-file)

17. How do you declare a custom service in a Drupal module?

Answer: B. In a services.yml file
Explanation: In Drupal, custom services are declared in a {module_name}.services.yml file located in the module's directory. This YAML file defines the service's class and any dependencies it may have.
Reference: [Services and dependency injection in Drupal](https://www.drupal. org/docs/drupal-apis/services-and-dependency-injection/services-and-dependency-injection-in-drupal)

18. Which of the following best describes a Drupal plugin?

Answer: B. A self-contained piece of functionality defined by an annotation and managed by a Plugin Manager
Explanation: A Drupal plugin is a reusable piece of functionality that is discovered and instantiated by a plugin manager. Plugins are defined using annotations in the docblock of a class and provide a way to extend Drupal's functionality in a consistent manner.
Reference: [Plugin API Overview](https://www.drupal. org/docs/drupal-apis/plugin-api/plugin-api-overview)

19. Which function should be used to add a route in a custom module?

Answer: C. Define routes in a .routing.yml file
Explanation: In Drupal, routes are defined in a {module_name}.routing.yml file within the module's directory. This YAML file maps URL paths to controllers or other callbacks and specifies parameters, requirements, and other routing options.
Reference: [Routing System Overview](https://www.drupal. org/docs/drupal-apis/routing-system/routing-system-overview)

20. Which of the following is the correct way to trigger a form submission handler in Drupal?

Answer: C. Define a form class that extends FormBase or ConfigFormBase
Explanation: To create a form in Drupal, you define a form class that extends FormBase (for standard forms) or ConfigFormBase (for configuration forms). Within this class, you implement methods such as buildForm(), submitForm(), and getFormId() to define the form's structure and behavior.
Reference: [Introduction to Form API](https://www.drupal. org/docs/drupal-apis/form-api/introduction-to-form-api)

These explanations and references should help validate the correct answers and provide further insight into Drupal's backend development practices.