What scopes are available for customer attributes?

Which type of product is typically used for items such as services, memberships, warranties, and subscriptions?

You have created a module controller that responds to the following URL: /mycompany/product/load/id/123.
Which two methods will load the product model by ID as specified in the URL? (Choose two.)

Which index mode is valid?

Which file should a developer use to set the default value when creating configuration fields for admin?