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Adobe Commerce Developer Expert Questions and Answers

Question 1

An Adobe Commerce developer was asked to provide additional information on a quote. When getting several quotes, the extension attributes are returned, however, when getting a single quote it fails to be returned.

What is one reason the extension attributes are missing?

Options:

A.

The developer neglected to add coiiection="trueM to their attribute in etc/extension_attributes.xmi file.

ottribute code="my_attributesM type="MyVendor\MyModule\Api\Data\^AttributeInterface[]M collection="true" />

B.

The developer neglected to provide a plugin On Hagento\Quote\Api\CartRepositoryInterface: :get.

C.

The developer neglected to implement an observer on the coiiection_ioad_after event.

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Question 2

The developer is required to convert a modules database scripts from old install/upgrade setup files to a data patches format and does not want to apply database changes that were already done by install/upgrade scripts.

The current module version is 1.5.4.

What would be the recommended solution to skip changes that were already applied via old format (install/upgrade scripts)?

Options:

A.

Implement Patchversioninterface and return 1.5.4 on the getversion() method.

B.

Inside apply() method, check for module version and run the code if version is less than 1.5.4.

C.

This is not possible. A module cannot implement both data patch and install scripts.

Question 3

A Project Architect needs to add a new developer who needs to be able to push code in an Adobe Commerce Cloud project. No integration with a third-party repository provider is setup.

What two actions would be required to ensure the developer has access? (Choose Two.)

Options:

A.

The developer's SSH public key must be added into a file named ~/.ssh/authorized_keys

B.

The developer needs to add SSH public key in the Cloud Account dashboard settings

C.

The developer's email must be added under Users in the Cloud Project Web Ul

D.

The Adobe Commerce admin user must be created and the developer's SSH public key must be added on their local system

Question 4

An Adobe Commerce Developer wishes to add an action to a pre-existing route, but does not wish to interfere with the functionality of the actions from the original route.

What must the developer do to ensure that their action works without any side effects in the original module?

Options:

A.

In the route declaration, use the before or after parameters to load their module in before or after the original module.

B.

Inject the new action into the standard router constructor's $actiomist parameter.

C.

Add the action into to the controllers/front_name/ in My.Module, Magento will automatically detect and use it.

Question 5

An Adobe Commerce developer adds a new extension attribute to add an array of values to the invoices that are fetched through the APIs.

After a while, their technical manager reviews their work and notices something wrong with the extension_attributes. xml file that the developer created in their module:

What is the problem with this xml snippet?

Options:

A.

The extension attribute references the wrong interface, it should have referenced the Magento\saies\Api\data\invoiceinterface.

B.

The extension attribute references the repository instead of the interface it implements (Magento\saies\Api\invoiceRepositorymterface).

C.

The type is wrong, string [] should be replaced with array.

Question 6

There is the task to create a custom product attribute that controls the display of a message below the product title on the cart page, in order to identify products that might be delivered late.

The new EAV attribute is_delayed has been created as a boolean and is working correctly in the admin panel and product page.

What would be the next implementation to allow the is_delayed EAV attribute to be used in the .phtml cart page such as $block->getProduct()->getIsDelayed()?

A)

Create a new file etc/catalog_attributes.xmi:

B)

Create a new file etc/extension attributes.xmi:

C)

Create a new file etc/eav attributes.xmi:

Options:

A.

Option A

B.

Option B

C.

Option C

Question 7

An Adobe Commerce Cloud project is using Enhanced Integration Environments with two install a new payment module.

The developer is using Cloud CLI for Commerce tool.

What would a developer do to test this new feature under the integration environment?

Options:

A.

1. Duplicate one of the integration environment branches.

2. Create a new active branch from integration and install the module.

3. Push the changes.

B.

1. Create a new branch from integration and install the module.

2. Push the changes.

3. Branch active status check is not necessary.

C.

1. Deactivate one of the active integration environment branches.

2. Create a new active branch from integration and install the module.

3. Push the changes.

Question 8

An Adobe Commerce developer has created a process that exports a given order to some external accounting system. Launching this process using the Magento CLI with the command php bin/magento my_module:order: process --order_id= is required.

Example: php bin/magento my_module:order:process --order_id=1245.

What is the correct way to configure the command?

A)

B)

C)

D)

Options:

A.

Option B

B.

Option C

C.

Option C

D.

Option D

Question 9

An Adobe Commerce developer is asked to change the tracking level on a custom module for free downloading of pdf and images.

The module contains following models:

Vendor\FreeDownload\Model\Download

Vendor\FreeDownload\Model\DownloadPdf extends Vendor\FreeDownload\Model\Download

Vendor\FreeDownload\Model\DownloadImage extends Vendor\FreeDownload\Model\Download

Download class has a parameter for tracking_level.

How will the developer configure the tracking_level parameter, in di.xml.to have a value of 4 for Download class and all classes that extend Download?

A)

B)

C)

Options:

A.

Option A

B.

Option B

C.

Option C

Question 10

When researching some issues with the indexer, an Adobe Commerce developer is seeing errors in the logs similar to Memory size allocated for the temporary table is more than 20% of innodb_buffer_pool_size. It is suggested that the client update innodb_buf f er_pool_size or decrease the batch size value.

Why does decreasing the batch size value improve performance?

Options:

A.

This decreases memory usage for the temporary table.

B.

This allows for a longer timeout per batch process.

C.

This allows for more PHP threads to be utilized during the process.

Question 11

On an Adobe Commerce Cloud platform, in which order does the ECE-Tools package apply patches?

Options:

A.

1. All required Magento patches included in the Cloud Patches for Commerce package.

2. Custom patches in the /m2-hotfixes directory in alphabetical order by patch name.

3. Selected optional Magento patches included in the Quality Patches Tool.

B.

1. All required Magento patches included in the Cloud Patches for Commerce package.

2. Selected optional Magento patches included in the Quality Patches Tool.

3. Custom patches in the /m2-hotfixes directory in alphabetical order by patch name.

C.

1. Custom patches in the /m2-hotfixes directory in alphabetical order by patch name.

2. All required Magento patches included in the Cloud Patches for Commerce package.

3. Selected optional Magento patches included in the Quality Patches Tool.

Question 12

An Adobe Commerce developer wants to generate a list of products using ProductRepositorylnterf ace and search for products using a supplier_id filter for data that is stored in a standalone table (i.e., not in an EAV attribute).

Keeping maintainability in mind, how can the developer add the supplier ID to the search?

Options:

A.

Write a before plugin on \Hagento\catalogVtodel\ProductRepository: :geti_ist() and register the search criteria passed. Write an event observer to 0 listen for the event cataiog_product_coiiection_ioad_before. Iterate through the registered search criteria, and if found, apply the needed join and filter to the events scollection.

B.

Add a CUStOm filter to the Virtual type "agento\Catalog\Model\Api\SearchCriteria\CollectionProcessor\ProductFilterProce5sor for supplier_id field. In

the custom filter, apply the needed join and filter to the passed $collection.

C.

Write a before plugin On \Magento\Framework\Api\SearchCriteria\CollectionProcessorInterface: :process(). Iterate through the $searchCriteria

provided for supplier_id, and if found, apply the needed join and filter to the passed scollection.

Question 13

The di. xml file of a module attaches two plugins for the class Action.

The PluginA has the methods: beforeDispatch, aroundDispatch, afterDispatch. The PluginB has the methods: beforeDispatch, afterDispatch.

The around plugin code is:

What would be the plugin execution order?

A)

B)

C)

Options:

A.

Option A

B.

Option B

C.

Option C

Question 14

A message queue currently has queue/consumer-wait-for-messages set to true, which allows the consumer process to run until a message is inserted into the queue. A piece of functionality is driven by data stored in the model

\Magento\variable\Model\variable and this value is only loaded once during the consumer run. If the variable is updated we want the consumer to restart so that the new value is loaded into memory without having to reload the variable on each message consumed.

The Adobe Commerce developer has created an after plugin on the \Magento\Variable\Model\variable:: save() function.

How would the developer use the plugin to trigger the consumer restart?

Options:

A.

Call the function \Magento\Framework\MessageQueue\PoisonPill\Poi5onPillPutInterface::put().

B.

Call the function \Magento\Framework\MessageQueue\Consumers\TriggerRe5tartInterface:trigger().

C.

Set the global Cache key trigger_consumer_restart t0 1.

Question 15

An Adobe Commerce developer is creating a new console command to perform a complex task with a lot of potential terminal output. If an error occurs, they want to provide a message that has higher visibility than some of the other content that may be appearing, so they want to ensure it is highlighted in red (as seen in the screenshot):

How can they customize the appearance of this message?

Options:

A.

Call the setDecorationType(Stype) method On the Symfony\Console\Output\OutputInterface Object before Calling writeln().

B.

Wrap the output content in tags like , , or .

C.

Throw a new commandException with the desired message passed as an argument.

Question 16

When checking the cron logs, an Adobe Commerce developer sees that the following job occurs daily: main.INFO: Cron Dob inventory_cleanup_reservations is successfully finished. However, the inventory_reservation table in the database is not emptied. Why are there records remaining in the inventory_reservation table?

Options:

A.

Only reservations matching canceled orders are removed by the cron job.

B.

Only reservations no longer needed are removed by the cron job.

C.

The "Auto Cleanup" feature from Multi Source Inventory was disabled in configuration.

Question 17

An Adobe Commerce developer is creating a module (Vendor.ModuleName) to be sold on the Marketplace. The new module creates a database table using declarative schema and now the developer needs to make sure the table is removed when the module is disabled.

What must the developer do to accomplish this?

Options:

A.

There is nothing further the developer needs to do. The table will be removed when the module is disabled and bin/magento setup:upgrade is run.

B.

There is nothing further the developer needs to do. The table will be removed when the when bin/magento module:uninstall vendor_ModuleName is run.

C.

Add a schema patch that implements Magento\Framework\setup\Patch\PatchRevertabieinterface and drops the table in the revert function.

Question 18

An Adobe Commerce developer has installed a module from a third-party vendor. This module fires a custom event named third_party_event_after and also defines an observer named third_party_event_after_observer that listens to that event. The developer wants to listen to this custom event in their own module but wants to execute their observer's logic after the third_party_event_after_observer observer has finished executing.

What would the developer do to ensure their observer runs after the observer defined by the third-party module?

Options:

A.

Ensure the third-party module is listed in the node of the developer's module.xmi file.

B.

Set the sort order of the new observer to be less than that of the third-party vendor's observer.

C.

This is not possible as observers listening to the same event may be invoked in any order.

Question 19

For security reasons, merchant requested to a developer to change default admin url to a unique url for every branch/environment of their Adobe Commerce Cloud project.

Which CLI command would the developer use update the admin url?

Options:

A.

ece-tools variable:update ADMIN_URL

B.

magento-cloud variable:set ADMIN_URL

C.

bin/magento adminuri:set <admin_uri>

Question 20

An Adobe Commerce developer is tasked to add a file field to a custom form in the administration panel, the field must accept only .PDF files with size less or equal than 2 MB. So far the developer has added the following code within the form component xml file, inside the fieldset node:

How would the developer implement the validations?

A)

Add the Validations Within the HyVendor\MyModule\Controller\Adminhtml\CustomEntity\UploadPdf Controller

B)

Add a virtual type forMyvendor\MyModuie\Modei\customPdfupioader specifying the aiiowedExtensions and the maxFiiesize for the constructor, within the module's di.xmi:

C)

Add the following code inside the node:

Options:

A.

Option A

B.

Option B

C.

Option C

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