AD0-E716 Adobe Commerce Developer Expert exact Exam Questions

Adobe Commerce Developer Expert

Last Update 19 hours ago Total Questions : 69

The Adobe Commerce Developer Expert content is now fully updated, with all current exam questions added 19 hours ago. Deciding to include AD0-E716 practice exam questions in your study plan goes far beyond basic test preparation.

You'll find that our AD0-E716 exam questions frequently feature detailed scenarios and practical problem-solving exercises that directly mirror industry challenges. Engaging with these AD0-E716 sample sets allows you to effectively manage your time and pace yourself, giving you the ability to finish any Adobe Commerce Developer Expert practice test comfortably within the allotted time.

Question # 4

When attempting operations that require lengthy processing, a merchant on Adobe Commerce Cloud receives a timeout error after 180 seconds.

How would the developer deal with this issue?

1. Modify admin timeout into .magento.app.yamifile.

2. Commit and push that code from the local environment.

3. Move code to Production environment.

1. In the Fastly Configuration section > Advanced Configuration.

2. Set the Admin path timeout value in seconds.

3. Save config and Upload VCL to Fastly.

1. Modify admin timeout into app/etc/config.php file.

2. Commit and push that code from the local environment.

3. Submit a support ticket to apply the changes.

Question # 5

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?

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

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

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

Question # 6

An Adobe Commerce developer is being tasked with creating a new cron job to run a method that has already been written. What are the minimally required steps to accomplish this?

Create a crontab.xmi file and a new system configuration in system.xmi for the schedule.

Create crontab.xmi and cron_groups.xmi files to assign the new job to a cron group.

Create a crontab.xmi file and set a schedule for the new cron job.

Question # 7

An Adobe Commerce developer is tasked with adding custom data to orders fetched from the API. While keeping best practices in mind, how would the developer achieve this?

Create an extension attribute on Nagento\sales\Api\E)ata\orderinterface and an after plugin on

Magento\Sales\Model\Order: :getExtensionAttributes() to add the custom data.

Create an extension attribute On Magento\Sales\Api\Data\OrderInterface and an after plugin On Magento\Sales\Api\OrderRepositoryInterface On geto and getListo to add the custom data.

Create a before plugin on Magento\sales\model\ResourceModel\order\collection: :load and alter the query to fetch the additional data. Data will then be automatically added to the items fetched from the API.

Question # 8

An Adobe Commerce developer has created a module that adds a product attribute to all product types via a Data Patch-According to best practices, how would the developer ensure this product attribute is removed in the event that the module is uninstalled at a later date?

Add an Uninstall.php file extending \l1agento\Framework\Setup\UninstallInterface tO the module's Setup directory and implement the uninstall

method.

Add instructions to the module's README.md file instructing merchants and developers that they must manually remove this attribute if they want to uninstall the module.

Make the Data Patch implement \Magento\Framework\setup\Patch\PatchRevertabieinterface and implement the revert method to remove the® product attribute.

Answer:

Explanation:

According to the Develop data and schema patches guide for Magento 2 developers, data patches can also implement PatchRevertabieinterface to provide rollback functionality for their changes. The revert() method contains the instructions to undo the data modifications made by the patch. To ensure that the product attribute is removed when the module is uninstalled, the developer should make the data patch implement PatchRevertabieinterface and implement the revert method to remove the product attribute using EavSetupFactory or AttributeRepositoryInterface. Verified References: https://devdocs.magento.com/guides/v2.3/extension-dev-guide/declarative-schema/data-patches.html

According to Adobe Commerce (Magento) best practices, when creating modules that add database schema changes or data through Data Patches, it's crucial to consider the reversibility of these changes for module uninstallation. Here's how each option relates to this practice:

Option A: Adding an Uninstall.php file that extends \Magento\Framework\Setup\UninstallInterface is indeed a method to handle module uninstallation in Magento. This interface requires the implementation of an uninstall method where you could write the logic to remove the product attribute. However, this approach is more commonly used for broader setup/teardown operations beyond simple data patches. The official Magento documentation discusses this approach under module uninstallation:

Magento DevDocs - Uninstalling a Module

But for data patches specifically, the recommended approach is different.

Option B: Adding instructions in the README.md file for manual removal by merchants or developers is not a best practice for module management in Magento. This approach relies on human action which can be error-prone and inconsistent, especially in a production environment. Magento encourages automated processes for module lifecycle management to ensure reliability and consistency.

Option C: This is the correct and recommended approach according to Magento best practices for data patches. By implementing \Magento\Framework\Setup\Patch\PatchRevertableInterface in your Data Patch class, you ensure that the patch can be reverted. This interface requires you to implement a revert method, which should contain the logic to remove the changes made by the patch, in this case, the product attribute. Here's how it works:

When creating a Data Patch, you extend \Magento\Framework\Setup\Patch\DataPatchInterface. To make it reversible, you also implement \Magento\Framework\Setup\Patch\PatchRevertableInterface.

In the revert method, you would write the code to remove the product attribute that was added by the patch.

This approach ensures that your module's changes can be automatically undone if the module is uninstalled, maintaining the integrity of the Magento installation. Here's a reference from Magento documentation:

Magento DevDocs - Data Patches

Example implementation:

php

use Magento\Framework\Setup\Patch\DataPatchInterface;

use Magento\Framework\Setup\Patch\PatchRevertableInterface;

use Magento\Eav\Setup\EavSetup;

use Magento\Eav\Setup\EavSetupFactory;

use Magento\Framework\Setup\ModuleDataSetupInterface;

class AddProductAttribute implements DataPatchInterface, PatchRevertableInterface

{

private $eavSetupFactory;

private $moduleDataSetup;

public function __construct(

EavSetupFactory $eavSetupFactory,

ModuleDataSetupInterface $moduleDataSetup

) {

$this->eavSetupFactory = $eavSetupFactory;

$this->moduleDataSetup = $moduleDataSetup;

}

public function apply()

{

/** @var EavSetup $eavSetup */

$eavSetup = $this->eavSetupFactory->create(['setup' => $this->moduleDataSetup]);

$eavSetup->addAttribute(

\Magento\Catalog\Model\Product::ENTITY,

'custom_attribute',

[

'type' => 'varchar',

'label' => 'Custom Attribute',

'input' => 'text',

'required' => false,

'sort_order' => 100,

'global' => \Magento\Eav\Model\Entity\Attribute\ScopedAttributeInterface::SCOPE_GLOBAL,

'group' => 'General',

]

);

}

public function revert()

{

/** @var EavSetup $eavSetup */

$eavSetup = $this->eavSetupFactory->create(['setup' => $this->moduleDataSetup]);

$eavSetup->removeAttribute(\Magento\Catalog\Model\Product::ENTITY, 'custom_attribute');

}

public static function getDependencies()

{

return [];

}

public function getAliases()

{

return [];

}

This ensures that if the module is uninstalled, the product attribute will be automatically removed, adhering to Magento's modular and reversible development practices.

Question # 9

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?

This decreases memory usage for the temporary table.

This allows for a longer timeout per batch process.

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

Answer:

Explanation:

Decreasing the batch size value improves performance by reducing the memory usage for the temporary table. The batch size value determines how many rows of data are processed at a time by the indexer. A large batch size value can cause the allocated memory size for the temporary table to exceed 20% of innodb_buffer_pool_size, which can result in errors and slow down the indexing process. By lowering the batch size value, the indexer can process the data more efficiently and avoid memory issues. Verified References: [Magento 2.4 DevDocs] [Magento Stack Exchange]

The error message regarding innodb_buffer_pool_size indicates that the temporary table’s memory usage is high. Decreasing the batch size value directly reduces the number of rows processed in each batch, which in turn reduces the memory requirements for the temporary table.

Impact of Batch Size on Memory Usage:

The batch size determines how many records are processed at one time. By lowering the batch size, fewer records are processed, which reduces the amount of temporary table memory needed, alleviating the pressure on the InnoDB buffer pool.

When the memory required by temporary tables exceeds the InnoDB buffer pool limit, MySQL might swap to disk, leading to slower performance and increased I/O.

Why Option A is Correct:

Reducing the memory footprint of temporary tables helps to prevent situations where memory constraints slow down or disrupt indexer operations.

Options B and C are incorrect as they do not directly impact memory usage. Batch size adjustments do not affect timeout settings or PHP thread usage.

Recommendations:

In addition to adjusting the batch size, consider optimizing the innodb_buffer_pool_size setting based on server capacity to better handle larger operations if needed.

References:

Magento DevDocs on Indexer Configuration and Troubleshooting

MySQL Documentation on InnoDB Buffer Pool

Question # 10

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)?

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

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

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