Ruby on Rails MCQs (Chapterwise Multiple Choice Questions)

Which of these is not a standard directory in a Rails application?

db

lib

app

All of these are standard directories

config

Answer & Explanation

Correct Answer: All of these are standard directories

Note: This Question is unanswered, help us to find answer for this one

Which of the following will return false?

All of these

(1...5) === 5

123 == 123.0

(1..10) != 1

Answer & Explanation

Correct Answer: (1...5) === 5

Note: This Question is unanswered, help us to find answer for this one

Where should you put images, JavaScript, and CSS so that they get processed by the asset pipeline?

App/static

App/images

App/assets

App/views

Answer & Explanation

Correct Answer: App/assets

Note: This Question is unanswered, help us to find answer for this one

Which choice is an incorrect way to render a partial?

<%= render(:partial => 'shared/product') %>

<%= render('shared/product', :collection => @products) %>

<%= render(template: 'shared/product', with: @products) %>

<%= render('shared/product', locals: { product: @product }) %>

Answer & Explanation

Correct Answer: <%= render(template: 'shared/product', with: @products) %>

Note: This Question is unanswered, help us to find answer for this one

The Controller in Post#create: what is the "best practice" action when the user submits an invalid form?

render action: 'new', alert: 'The Post is incomplete or invalid.'

render action: 'create', alert: 'The Post is incomplete or invalid.'

render action: 'update', alert: 'The Post is incomplete or invalid.'

redirect_to 'new', notice: 'The Post is incomplete or invalid'

redirect_to @post, notice: 'The Post is incomplete or invalid'

Answer & Explanation

Correct Answer: render action: 'new', alert: 'The Post is incomplete or invalid.'

Note: This Question is unanswered, help us to find answer for this one

Procs are objects, Blocks are not.

true

false

Answer & Explanation

Correct Answer: true

Note: This Question is unanswered, help us to find answer for this one

If a method is protected:

It may be called by any instance of the defining class or its subclasses

It may be called only by the instance of its subclasses

It may not be called by any instances.

It may be called only by the instance of defining class

Answer & Explanation

Correct Answer: It may be called by any instance of the defining class or its subclasses

Note: This Question is unanswered, help us to find answer for this one

Which is NOT a reserved Ruby logic flow word?

if

break

elsif

else

elseif

Answer & Explanation

Correct Answer: elseif

Note: This Question is unanswered, help us to find answer for this one

Where do you add named scopes?

Views

ApplicationController

Models

Migrations

Answer & Explanation

Correct Answer: Models

Note: This Question is unanswered, help us to find answer for this one

What is the purpose of config.ru file?

It's the file where are defined the gems used

It's the basic Rails configuration file

It's not used in Ruby on Rails applications, it's here only for historic reasons

It's the Rack configuration file, a module webserver interface

Answer & Explanation

Correct Answer: It's the Rack configuration file, a module webserver interface

Note: This Question is unanswered, help us to find answer for this one

Ruby On Rails Quick Quiz

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Start Practicing with our MCQs given below.

Ruby On Rails MCQ

Ruby On Rails Quick Quiz

Which of these is not a standard directory in a Rails application?

Which of the following will return false?

Where should you put images, JavaScript, and CSS so that they get processed by the asset pipeline?

Which choice is an incorrect way to render a partial?

The Controller in Post#create: what is the "best practice" action when the user submits an invalid form?

Procs are objects, Blocks are not.

If a method is protected:

Which is NOT a reserved Ruby logic flow word?

Where do you add named scopes?

What is the purpose of config.ru file?