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How to navigate Phoenix
Contributed by: Hall
  • 1. What is the primary purpose of a Phoenix Router?
A) To route incoming HTTP requests to the appropriate controller action.
B) To render HTML templates.
C) To define Ecto schemas.
D) To manage database connections.
  • 2. Which command generates a new Phoenix project?
A) mix phx.new
B) phoenix new
C) iex -S mix phx.new
D) elixir new
  • 3. What does the 'mix phx.server' command do?
A) Generates a new resource.
B) Runs database migrations.
C) Starts the Phoenix server.
D) Compiles the Elixir code.
  • 4. What file configures the application's endpoints?
A) application.ex
B) config.exs
C) router.ex
D) endpoint.ex
  • 5. Which directory contains the application's views?
A) lib/my_app/views
B) web/views
C) priv/views
D) lib/my_app_web/views
  • 6. What is the purpose of an Ecto schema?
A) Defines the application's configurations.
B) Defines the routes of the application.
C) Defines the application's layout.
D) Defines the structure of a database table.
  • 7. What is the role of a Phoenix Channel?
A) To handle HTTP requests.
B) To define database migrations.
C) To provide real-time communication via WebSockets.
D) To manage background jobs.
  • 8. Which command is used to run database migrations?
A) mix ecto.migrate
B) elixir migrate
C) ecto migrate
D) mix phx.migrate
  • 9. What does the abbreviation 'HTML' stand for?
A) Hyper Transfer Markup Language
B) Home Tool Markup Language
C) Highly Textual Markup Language
D) HyperText Markup Language
  • 10. What file contains the application's configurations?
A) lib/my_app_web/endpoint.ex
B) lib/my_app/application.ex
C) web/router.ex
D) config/config.exs
  • 11. What is the purpose of the `use MyAppWeb, :controller` macro?
A) To define a route.
B) To start the server.
C) To define a schema.
D) To import necessary modules and functions for controllers.
  • 12. Where are templates located?
A) lib/my_app/templates
B) lib/my_app_web/templates
C) web/templates
D) priv/templates
  • 13. What is EEx?
A) Extended Erlang
B) External Elixir
C) Embedded Elixir
D) Extra Elixir
  • 14. What does `mix test` command do?
A) Generates new test files.
B) Starts the test server.
C) Runs the application's tests.
D) Compiles the test environment.
  • 15. What is the purpose of `Plug`?
A) A specification for composable modules in web applications.
B) A tool for code formatting.
C) A library for database migrations.
D) A framework for building command-line applications.
  • 16. What is the main benefit of using Phoenix?
A) Speed, scalability, and maintainability.
B) Simplicity and rapid prototyping.
C) Large community support and extensive documentation.
D) Easy integration with other programming languages.
  • 17. Which function is typically used to render a template within a controller?
A) render/2
B) template/2
C) view/2
D) display/2
  • 18. What is a HEEx template?
A) A Javascript templating engine.
B) A Phoenix template that uses HTML-aware syntax.
C) A compiled EEx template.
D) An old version of EEx.
  • 19. What is the purpose of the `phx.new.ecto` generator option?
A) To install Ecto after creating a project.
B) To update Ecto to the latest version.
C) To remove Ecto from an existing project.
D) To generate a Phoenix project with Ecto pre-configured.
  • 20. Which file defines the application's supervisors?
A) lib/my_app_web/endpoint.ex
B) web/router.ex
C) config/config.exs
D) lib/my_app/application.ex
  • 21. What is the purpose of a Context in a Phoenix application?
A) To define database schemas.
B) To render HTML templates.
C) To encapsulate business logic.
D) To handle HTTP requests.
  • 22. What is the purpose of the `with` statement in Elixir?
A) To handle exceptions.
B) To declare a variable.
C) To define a loop.
D) To chain together function calls based on success or failure.
  • 23. What is the purpose of the `conn` struct in Phoenix?
A) Represents a database connection.
B) Represents a user session.
C) Represents the connection information for an incoming HTTP request.
D) Represents a channel connection.
  • 24. What is the purpose of the `phx.gen.html` task?
A) Generates a database migration.
B) Generates a single HTML template.
C) Generates a new Phoenix project.
D) Generates all the necessary files for CRUD operations on a resource.
  • 25. What is a LiveView?
A) A server-rendered interactive web application built with Phoenix.
B) A database management tool.
C) A client-side JavaScript framework.
D) A code editor plugin.
  • 26. What is the purpose of `push_event` in LiveView?
A) Sends an event from the client to the server.
B) Sends an event from the server to the client.
C) Triggers a database migration.
D) Publishes an event to a PubSub topic.
  • 27. What does `mix format` do?
A) Generates new project files.
B) Formats the project's Elixir code.
C) Runs the project's tests.
D) Compiles the project's Elixir code.
  • 28. What is PubSub in Phoenix?
A) A code formatting tool.
B) A testing framework.
C) A library for publish-subscribe messaging.
D) A database connection pool.
  • 29. What is the purpose of `assigns` in a Phoenix LiveView?
A) A function that updates the LiveView's state.
B) A configuration file for the LiveView.
C) A map containing data passed from the server to the LiveView template.
D) A list of CSS classes to apply to an HTML element.
  • 30. How do you specify a root route in Phoenix?
A) root PageController, :index
B) get "/", PageController, :index
C) route "/", PageController, :index
D) map "/", PageController, :index
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