Question from the Symfony 3 test

The definition of validation constraints by annotation requires the following configuration of the framework: validation: { enable_annotations: true }.

The names given to the validation groups must follow a nomenclature.

Validation constraints can be used in a form only if the object associated with the form does not already have validation constraints.

In the validate() method of the Validator component, the groups are defined in the 2nd or 3rd argument.

The Validator component allows validation of methods regardless of their visibility (public, private, protected).