data/questions/ror/questions.csv

question,option1,option2,option3,option4,answer,difficulty
What does MVC stand for in Ruby on Rails?,Model View Controller,Model View Content,Master View Controller,Main Value Controller,Model View Controller,low
Which command creates a new Rails application?,rails new,rails generate,rails create,rails init,rails new,low
What is the default database used in a Rails application?,SQLite,PostgreSQL,MySQL,Oracle,SQLite,low
Which file defines the routes in a Rails application?,routes.rb,application.rb,config.rb,route.rb,routes.rb,low
Which method is used to define a route in Rails?,route(),resources(),map(),get(),resources(),low
What is ActiveRecord in Rails?,ORM framework,HTML rendering engine,API client,view helper,ORM framework,low
How do you create a new migration in Rails?,rails generate migration,rails generate model,rails create migration,rails make migration,rails generate migration,low
Which file contains the database configuration in Rails?,database.yml,db_config.rb,config.rb,db.yml,database.yml,low
Which command runs all the migrations in Rails?,rails db:migrate,rails db:setup,rails migrate,rails db:run,rails db:migrate,low
Which method is used to render a view in Rails?,render(),render_view(),show(),view(),render(),low
How do you define a model in Rails?,class Model < ActiveRecord::Base,model Model < ApplicationRecord,class Model < ApplicationRecord,model class Model,class Model < ActiveModel::Base,class Model < ActiveRecord::Base,low
What is the primary purpose of the `rails console`?,To test Rails commands,To interact with the Rails application in the terminal,To view Rails logs,To run Rails migrations,To interact with the Rails application in the terminal,low
Which of the following is used to define a route for a RESTful resource?,resources :model,resource :model,route :model,get :model,resources :model,low
What does `rails server` start?,A test environment,A development server,The production server,The database,A development server,low
What is the purpose of `rails db:seed`?,To generate the schema,To load seed data into the database,To run all migrations,To initialize the application,To load seed data into the database,low
What is the default view engine used in Rails?,ERB,HAML,SLIM,HTML,ERB,low
Which of the following is not a Rails helper?,link_to,render,form_for,find,find,low
What is the purpose of the `before_action` callback?,To execute code before a controller action,To execute code after a controller action,To define a default value,To fetch data before rendering a view,To execute code before a controller action,low
How do you create a new controller in Rails?,rails generate controller,rails generate model,rails create controller,rails create controller,rails generate controller,low
Which method is used to generate a new resource in Rails?,rails generate scaffold,rails generate resource,rails create resource,rails generate model,rails generate scaffold,low
What is the purpose of the `belongs_to` association in Rails?,To set up a one-to-one relationship,To set up a one-to-many relationship,To set up a many-to-many relationship,To create a nested resource,To set up a one-to-one relationship,low
How do you add a new column to an existing table in Rails?,rails generate migration,rails db:migrate,rails db:add_column,rails generate model,rails generate migration,medium
Which of the following is the correct way to render a partial in Rails?,render 'partial',render partial(),render 'partial.html.erb',render 'shared/partial',render 'partial',medium
How do you store session data in Rails?,In a database,in cookies,in a file,in memory,in a database,medium
What is the purpose of the `has_many` association in Rails?,To set up a one-to-one relationship,To set up a one-to-many relationship,To set up a many-to-many relationship,To create a nested resource,To set up a one-to-many relationship,medium
Which of the following is used to test models in Rails?,RSpec,FactoryBot,Cucumber,Test::Unit,RSpec,medium
What does the `strong_parameters` feature do in Rails?,Prevents mass assignment vulnerabilities,Encrypts parameters,Validates input parameters,Filters session data,Prevents mass assignment vulnerabilities,medium
How do you validate the presence of a field in Rails?,validates :field,validates_presence_of :field,validates_field :field,validates_presence :field,validates_presence_of :field,medium
Which file stores the database schema in Rails?,schema.rb,config.rb,migration.rb,db_config.rb,schema.rb,medium
What method is used to delete a record from the database in Rails?,destroy(),delete(),remove(),destroy_all(),destroy(),medium
What is the purpose of `flash` in Rails?,To store temporary messages,To store session data,To handle errors,To render partials,To store temporary messages,medium
What is the correct way to create a new migration for adding a column to a table?,rails generate migration AddColumnToTable,column:type,rails generate migration AddColumnToTable,column:type,rails create migration AddColumnToTable,column:type,rails create migration AddColumn,column:type,rails generate migration AddColumnToTable,column:type,medium
Which of the following is used to render an HTML form in Rails?,form_for,form_tag,render_form,form,form_for,medium
What is the use of `active_record` in Rails?,It connects models to the database,It handles routing,It handles the session data,It renders views,It connects models to the database,medium
How do you include JavaScript and CSS files in Rails?,Using the asset pipeline,Using a CDN,Including in the layout file,Using JavaScript include tags,Using the asset pipeline,medium
How do you define a scope in a Rails model?,scope :name,scope :name => ,scope :name do ,scope do,scope :name,medium
What is the main benefit of using Rails' built-in authentication?,Ease of use,Security,Flexibility,Customization,Security,medium
Which of these is used to send email in Rails?,ActionMailer,Mailer,Emailer,ActionView,ActionMailer,medium
What is the purpose of `rails db:reset`?,To reset the database schema,To run migrations,To drop and recreate the database,To seed the database,To drop and recreate the database,medium
How do you create a polymorphic association in Rails?,use `polymorphic: true` in the model,create a join table,add a foreign key,create a has_many relationship,use `polymorphic: true` in the model,high
What is the purpose of the `rails test` command?,Run all tests,Run unit tests,Run only model tests,Run functional tests,Run all tests,high
How do you create a database index in Rails?,add_index,create_index,create_index_in,migration_index,add_index,high
What is the correct way to create a database constraint in Rails?,use `add_foreign_key`,use `add_constraint`,use `validates_uniqueness_of`,use `add_check_constraint`,use `add_foreign_key`,high
How do you implement background jobs in Rails?,Sidekiq,ActiveJob,Resque,DelayedJob,ActiveJob,high
What is the purpose of `rails assets:precompile`?,Prepares assets for production,Deletes unused assets,Generates a sitemap,Prepares assets for development,Prepares assets for production,high
How do you add a unique constraint to a column in Rails?,validates_uniqueness_of,add_index with unique:true,add_constraint,validates_uniqueness,add_index with unique:true,high
Which Rails feature allows easy database querying?,ActiveRecord,ActiveJob,ActionCable,ActionMailer,ActiveRecord,high
What is the default Rails logger?,Logger,ActiveLogger,Log4r,ConsoleLogger,Logger,high
How do you configure Rails to use a different database in production?,Change the `database.yml` file,Change `config/database.rb`,Set an environment variable,Use a configuration initializer,Change the `database.yml` file,high
What is the purpose of `rails generate scaffold`?,Generates full resource code,Generates only a model,Generates only a controller,Generates only a migration,Generates full resource code,high
What is the main advantage of using `ActiveStorage` in Rails?,Uploading files easily,Sending email,Handling session data,Managing forms,Uploading files easily,high
How do you define a nested resource in Rails?,resources :parent do resources :child,end,resources :parent/child,resource :child,resources :parent/child,end,resources :parent do resources :child,end,high
How do you define a default value for a model attribute in Rails?,Use `default` in the database migration,Use `default` in the model,Use `default_value` method,Use `default_value` in the migration,Use `default` in the database migration,high
How do you handle file uploads in Rails?,ActiveStorage,FileUpload,CarrierWave,ActionMail,ActiveStorage,high
What does the `has_secure_password` method do in Rails?,Encrypts and authenticates passwords,Encrypts passwords only,Authenticates users,Generates a password hash,Encrypts and authenticates passwords,high
How do you configure Rails to use a different caching system?,Edit `config/environments/production.rb`,Edit `config/database.yml`,Edit `config/caching.rb`,Edit `config/initializers/cache.rb`,Edit `config/environments/production.rb`,high