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