In a code review of a merchant's site you have discovered that there are multiple observers for the checkout_submit_all_after event. After closer inspection, you notice one of these observers is relying on the others being executed before it is called. What risk does this pose, and how can it be mitigated?

Order of listener execution cannot be guaranteed, resulting in a fragile implementation. This code should be re-worked using plugins

There is no risk posed as long as each event observer specifies a correct sortOrder. Nothing needs to be changed.

Event observers are fired in alphabetical order of the observer name. There is no risk here.

Magento only supports one observer per event. These observers will need to be combined into a single point of customization.

You need to add the Google Tag Manager (GTM) to every page. What three steps do you take to accomplish this in MyCompany_MyModule?

Add into view/frontend/layout/default.xml.

Create view/frontend/layout/default.xml.

Create view/frontend/templates/script.phtml and add GTM code.

Run bin/magento create:module:template script.phtml

Copy vendor/module-catalog/view/template/script.phtml to view/template/script.phtml and add GTM script.

What is the relationship between products and categories in Magento?

Products may be assigned to zero or more categories

Product to category relation is dynamically defined by Catalog Product Rules

Each product belongs to zero or one category

Each product always belongs to one category

How does Magento store customer address attribute values?

Customer address is an EAV entity, so all values are stored in the customer_address_entity table and related values tables

Customer address is a flat entity, so all values are stored in the customer_address_entity table

Customer address is not an entity, so its properties are customer attributes

Customer address is an attribute of the customer, so it doesn't have its own attributes

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?

Magento\Config\Model\Config\Source\Yesno

Magento\Config\Model\Config\Option\Yesno

Magento\Config\Model\Config\Frontend\Yesno

Magento\Config\Model\Config\Backend\Yesno

Free Adobe AD0-E703 Exam Practice Questions & Explanations

Last updated on: Nov 11, 2026
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