Which helper should be used when your model has association with other models and they also need to be validated?

Which type of association is not supported by ActiveRecord?

Which method is used to render partial templates as part of a view?

render method does not accept ________________

Which notation is used to create class variables?

Ruby 1.9, what new method of building key-value pairs is supported?

Which of these is not a valid form helper?

What is the output of the following? @@x = 10 puts defined? @@x

In the context of unit testing Rails applications, 'fixture' refers to which of the following?

Which does NOT append 'nine' to the array: 'big_data'?