We have given: str = 'abcdef' Which of the following will return the string 'def'? 1) str[0,-3] 2) str[-3,3] 3) str[4,3] 4) str['def']

Which of the following is a built-in feature of ActiveRecord

Output of the following? a = (1 <=> 2) b = (1 <=> 1.0) c = (b <=> a) puts c

To establish an association from a Post model to another Post model (say if one post is in response to another and there is a parent_post_id column on the posts table), you would add the following to the Post model:

What is Strong Parameters in rails 4 ?

how Date.today differs from Date.current?

Which of the following options will create a many-to-many relation between the 'users' and the 'jobs' tables?

For the String class, when using #gsub! what are the potential return values?

What is the purpose of the model in an MVC architecture framework such as Ruby on Rails?

Which of the following statements regarding models in Ruby on Rails is correct?

Which of the following actions is fired by default when a new controller is created?