A module you are developing requires the addition of new routes that should be accessible in the store front.
Where do you define your module's frontName?

A module you are working on needs to send a newsletter to all subscribed customers at predefined intervals.
Which two actions do you take to make sure the newsletter is sent? (Choose two.)

You have created a module with a custom ACL resource and want to restrict access to resources of your module.
Which three items are restricted based on ACL role permissions? (Choose three.)

A custom module must make changes to the schema following each setup:upgrade run. This must be done after all other module's schema updates have been applied.
How is this accomplished?

You have created a custom module which must perform an action immediately after an order is placed, but only on the store front of the merchant site. You have selected the checkout_submit_all_after as the target event which the module will observe.
In which file will the event observer be declared?