The Adobe Commerce Developer Expert (AD0-E725)

The correct way to extend GraphQL is to extend the schema via schema.graphqls.

Define new fields for ProductInterface.

Provide a resolver class to return the attribute values.

B is incorrect: adding attributes in admin does not automatically expose them in GraphQL.

C is incorrect: repository plugins affect service contracts, not GraphQL schema definitions.

Webhooks in Adobe Commerce can be customized using webhooks.xml, where rules can be defined with conditions, including regex-based filtering. This allows the developer to configure postcodes that trigger specific webhook behavior.

A is not correct: modifying core webhook logic via plugin is not the recommended approach.

C is incorrect: duplicating webhooks is unnecessary when rules can be defined declaratively.

B is correct: webhooks.xml with rule conditions provides the proper solution.

Comprehensive and Detailed Explanation (with official references):

The correct answer is A. The plugin cannot be created for this class.

The reason is that Magento\Framework\App\Cache\Proxy implements the NoninterceptableInterface .

Any class that implements the NoninterceptableInterface in Magento is excluded from the plugin system .

This means no before , after , or around plugins can be applied to methods of such classes.

Magento uses this mechanism to protect critical classes (like Proxy classes, Factories, and other infrastructure code) from being intercepted, as doing so could introduce performance or stability issues.

Therefore, the developer’s plugin for the save() method does not work, because plugins are not allowed on this class by design .

Options B and C are incorrect because:

Another plugin (after/around) does not block the execution in this case; the class itself is simply non-interceptable .

Official Documentation Extracts:

“Plugins cannot be applied to final classes, final methods, non-public methods, or classes that implement Magento\Framework\ObjectManager\NoninterceptableInterface.” — Adobe Commerce DevDocs: Plugins limitations

“Classes implementing NoninterceptableInterface cannot be intercepted. This interface is used to mark classes that must not be extended through the plugin mechanism.” — Magento Framework Reference: NoninterceptableInterface

The correct approach for creating CMS blocks programmatically is to use a Data Patch (DataPatchInterface).

Data Patches are used for creating or modifying data programmatically (e.g., CMS blocks, CMS pages, configuration values).

InstallSchemaInterface (B) and SchemaSetupInterface (C) are used for modifying database schema, not data.

If a bug fix patch has not yet been officially released by Adobe (via Quality Patches Tool (QPT)), developers can apply custom patches using the cweagans/composer-patches package.

Option A is best practice in general, but in urgent scenarios, custom patches are allowed.

Option B applies only for official Adobe patches distributed via QPT, not for community-supplied or custom fixes.

Option C is correct: cweagans/composer-patches allows applying custom patches via composer.json until an official fix is available.

The correct way to dump a database from an Adobe Commerce Cloud environment is with the vendor/bin/ece-tools db-dump command.

A (db-snapshot) is not a valid ece-tools command.

B is incorrect: magento-cloud snapshot commands are for managing whole environment snapshots, not direct DB dumps.

C is correct: ece-tools db-dump provides the database export for staging/local replication.

Comprehensive and Detailed Explanation (with official references):

The correct answer is C. Restrict which resources (scripts, styles, images) are allowed to load on the website.

Adobe Commerce supports Content Security Policy (CSP) , a browser-level security feature that mitigates certain types of attacks such as Cross-Site Scripting (XSS) and data injection attacks .

By defining a CSP in Adobe Commerce, developers can control:

Which scripts can be executed (script-src).

Which stylesheets can be applied (style-src).

Which images and media can be loaded (img-src, media-src).

Whether inline scripts or styles are allowed.

This does not sanitize user input (A) nor restrict user access based on IP addresses (B). Instead, it focuses on restricting the sources of content that the browser can load .

Official Documentation Extracts:

“Content Security Policy (CSP) is an added layer of security that helps to detect and mitigate certain types of attacks, including Cross-Site Scripting (XSS) and data injection attacks. CSP works by restricting the sources from which content can be loaded.” — Adobe Commerce DevDocs: Content Security Policy

“A CSP allows developers to define approved sources of content that browsers can load. These policies help reduce the risk of malicious content injection in Magento storefronts.” — Adobe Commerce Security Guide

Adobe Commerce B2B includes a native " Payment on Account " module, which is part of the B2B suite. This module allows customers with company accounts to place orders on account (credit).

A (repurpose COD) is a hack and not recommended.

C (create new payment method) is unnecessary since Adobe Commerce already includes this B2B feature.

B is correct: simply enable the native B2B Payment on Account module.

Adobe Commerce webhooks payloads are delivered in JSON format, which is the standard for exchanging event data between Adobe Commerce and third-party systems.

B XML and C plain text are not supported formats for webhooks.