Ruby on Rails Ruby on Rails MVC Architecture & Routing

Question 1

In Rails MVC, which layer is responsible for handling HTTP requests and coordinating between the Model and View?

Accepted Answer

Controller

Answer

Model

Answer

View

Answer

Router

Question 2

Which Rails file defines the mapping between URLs and controller actions?

Accepted Answer

routes.rb

Answer

application.rb

Answer

schema.rb

Answer

config.rb

Question 3

What does the Rails helper `resources :articles` generate in routes.rb?

Accepted Answer

Seven RESTful routes for the articles resource

Answer

Only GET routes for articles

Answer

Only CRUD routes for index and show

Answer

A single named route for articles

Question 4

In Rails, where do you place shared application layout files that wrap all views?

Accepted Answer

app/views/layouts/

Answer

app/views/shared/

Answer

app/layouts/

Answer

app/templates/

Question 5

Which method in a Rails controller renders a specific view template explicitly?

Accepted Answer

render

Answer

show

Answer

display

Answer

present

Question 6

What is the purpose of `before_action` in a Rails controller?

Accepted Answer

To run a method before specified controller actions execute

Answer

To define a route before an action

Answer

To validate model data before saving

Answer

To preload assets before rendering