A Magento industry partner shipping provider has tasked you to build their integration module called MyCompany_ShippingProvider.
Where do you define the class that provides options for the select field that enables or disables the provider in the file etc/adminhtml/system.xml?

A merchant asks you to extend customer functionality to allow customer accounts to be associated with two or more billing addresses.
How is this implemented?

You are reviewing a Magento module and see a directory named Service.
What can you determine from this directory's name?

What order operation is available in the My Account section in the storefront?

You are working on a new entity called vendor. You implemented the model, resource model and collection.
You want to ensure that standard model events will be fired for your model, so an observer can be created for the events vendor_save_after, vendor_save_commit_afterand others.
How do you do that?