素晴らしいAD0-E724試験問題集試そうAD0-E724問題集PDF [Q28-Q52]

素晴らしいAD0-E724試験問題集試そうAD0-E724問題集PDF

AD0-E724問題集PDFでAD0-E724リアル試験問題解答

質問 # 28
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?

• A. This allows for more PHP threads to be utilized during the process.
• B. This decreases memory usage for the temporary table.
• C. This allows for a longer timeout per batch process.

正解：B

解説：
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.

質問 # 29
A developer needs to initialize the jQuery Ul widget for a specific HTML tag. Which HTML attribute is used for this?

• A. data-mage-init
• B. x-magento-init
• C. data-ui

正解：A

解説：
The data-mage-init HTML attribute is used to initialize the jQuery UI widget for a specific HTML tag. This attribute specifies the name of the widget and its configuration options as a JSON object.
The x-magento-init HTML attribute is used to initialize RequireJS modules for a specific HTML tag. The data-ui HTML attribute does not exist in Adobe Commerce.
Verified References: [Adobe Commerce Developer Guide - Initialize JavaScript components using the data- mage-init attribute] To initialize the jQuery UI widget in Adobe Commerce, thedata-mage-initattribute is used in the HTML tag.
This attribute allows specifying the widget's component and its configuration in a JSON format. Thex- magento-initis used for initializing JavaScript components in a similar manner but is typically used within< script>tags. There's no standarddata-uiattribute used for this purpose in Magento 2.

質問 # 30
An international merchant is complaining that changes are taking too long to be reflected on the frontend after a full product import.
Thinking it may be database issues, the Adobe Commerce developer collects the following entity counts:
* Categories: 900
* Products: 300k
* Customers: 700k
* Customer groups : 106
* Orders: 1600k
* Invoices: 500k
* Creditmemos: 50k
* Websites : 15
* Stores : 45
What is a probable cause for this?

• A. The combination of the number of products, categories and stores is too big. This leads to a huge amount of values being stored in the flat catalog indexes which are too large to be processed at a normal speed.
• B. The combination of the number of products, customer groups and websites is too big. This leads to a huge amount of values being stored in the price index which is too large to be processed at a normal speed.
• C. The combination of the number of orders, customers, invoices and creditmemos is too big. This leads to a huge amount of values being stored in the customer grid index which is too large to be processed at a normal speed.

正解：A

解説：
The combination of a large number of products, categories, and stores directly affects the flat catalog indexing process. Each product needs to be indexed across all categories and stores, which exponentially increases the data size of the index tables. This can significantly slow down the frontend updates after a full product import due to the high volume of data that needs to be processed.
Impact on Flat Catalog and Indexing:
In Magento, flat catalog tables are used to optimize product data retrieval, especially in stores with a large catalog. However, with high numbers of products, categories, and stores, the flat catalog tables become massive, making them slower to update.
In this scenario, the system must create and maintain an entry for each product in each store across every category, leading to a substantial volume of data.
Why Option A is Correct:
This combination (products, categories, stores) is known to cause performance issues in indexing and data storage. It impacts the catalog indexes, which are critical for reflecting updates on the frontend.
Options B and C do not directly relate to the delay after product imports. Option B involves customer-related data, and Option C is related to price indexing, which affects a different area.
Optimization Recommendations:
Consider disabling the flat catalog and leveraging Elasticsearch for product and category search and filtering.
Additionally, increasing server resources or partitioning the data could help optimize performance.

質問 # 31
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?

• A. Ensure the third-party module is listed in the <sequence> 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.

正解：C

解説：
https://developer.adobe.com/commerce/php/best-practices/extensions/observers/#do-not-rely-on-invocation- order

質問 # 32
An Adobe Commerce developer has been asked to modify the PageBuilder slider content type to allow a new custom content type (other than slide) to be assigned as a child. The developer has already created the new content type called improved_slide in their module. They now need to create a new view/adminhtml
/pagebuilder/content_type/slider. xml file in their module to allow the new content type to be a child of slider content types.
What is the correct xml to accomplish this?

• A.
• B.
• C.

正解：B

解説：
The correct answer is Option C. This XML configuration is the correct way to define allowed child content types for a slider content type in Magento's PageBuilder.
Magento PageBuilder Content Type Structure:
In PageBuilder, each content type can specify which other content types are allowed as children.
This is done by defining the allowed_children array within the content type's XML configuration.
Analyzing Option C:
Arguments Definition: Option C uses the <arguments> node to define a new argument named allowed_children.
Array Structure: This argument is an array (xsi:type="array") that includes an item specifying the improved_slide as an allowed child with xsi:type="string".
This configuration is correct because it explicitly defines which child content types are allowed for the slider content type, adhering to Magento's structure for allowed child elements in PageBuilder.
Why Options A and B are Incorrect:
Option A: Uses a <children> node with policy="allow", which is not the standard way to define allowed children for PageBuilder content types. This format is incorrect and won't be recognized by PageBuilder.
Option B: Uses <allowed_descendants>, which also doesn't align with the way Magento's PageBuilder expects child content types to be declared. The correct term is allowed_children, not allowed_descendants.

質問 # 33
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?

• A. Wrap the output content in tags like <error>, <info>, or <comment>.
• B. Call the setDecorationType(Stype) method On the Symfony\Console\Output\OutputInterface Object before Calling writeln().
• C. Throw a new commandException with the desired message passed as an argument.

正解：A

解説：
In Adobe Commerce, when developing custom console commands, you can customize output messages by using special tags provided by Symfony Console, which Adobe Commerce relies on. These tags are designed to help differentiate types of messages and can be used to add color or emphasis to the output, enhancing visibility.
For critical error messages, wrapping the message in the <error> tag will display it in red, as shown in your screenshot. The available tags include:
* <error> for red-colored error messages.
* <info> for informational messages (often displayed in blue).
* <comment> for comments or warnings (usually yellow).
$output->writeln('<error>A critical error has occurred.</error>');
This method is effective and widely used for output customization in Symfony-based console commands.
Additional Resources:
* Adobe Commerce Developer Guide: Console Command Customization
* Symfony Console Output Formatting

質問 # 34
An Adobe Commerce developer successfully added a new column to the customers grid. This column needs the data to be formatted before showing its content in the grid.
According to best practices, how would the developer add the custom logic to render the column?

• A. 1. Create a custom class extending flagento\Ui\Component\Listing\Columns\Colunm.
  2. Add the custom logic within the prepareDataSource method.
  3. Add an attribute class to the column node within the module's customer_listing.xml.
• B. 1. Create an after pluginforMagento\Ui\Component\Listing\Columns\Column::prepareColumn().
  2. Add the custom logic within the afterPreparecoiumn method.
• C. 1. Override the Magento\Customer\Ui\Component\DataProvider Class using a preference.
  2. Override the getData() method and add the custom logic per row.

正解：A

解説：
The best practice to add custom logic for data formatting in a grid column is to create a new class extending
\Magento\Ui\Component\Listing\Columns\Column. The prepareDataSource method is designed for processing and formatting data before it is displayed in the UI component.
* Using prepareDataSource in a Custom Column Class:
* By extending \Magento\Ui\Component\Listing\Columns\Column, you gain access to the prepareDataSource method, where you can manipulate data as needed.
* Adding a custom class allows for reusability and modular code, which is in line with Magento's architecture.
* Why Option B is Correct:
* This option uses Magento's UI component structure properly, focusing on the intended class and method for grid data manipulation. Option A involves an unnecessary plugin, and Option C with DataProvider preference is generally discouraged for simple UI modifications.
* Implementation Steps:
* Extend the Column class and add your logic in the prepareDataSource method.
* Then, in your customer_listing.xml, reference this class within the <column> node using the class attribute.

質問 # 35
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?

• A. Make the Data Patch implement \Magento\Framework\setup\Patch\PatchRevertabieinterface and implement the revert method to remove the product attribute.
• B. Add an Uninstall.php file extending \l1agento\Framework\Setup\UninstallInterface tO the module's Setup directory and implement the uninstall method.
• C. 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.

正解：A

解説：
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.

質問 # 36
A new custom module is built for the existing Adobe Commerce store. A merchant has requested a few frontend updates. For this, a developer has to implement a custom style.
What is the location of the less file that will be included by default?

• A. view/{area}/web/css/source/_module.less
• B. view/{area}/web/css/style less
• C. view/{area}/web/css/source/main less

正解：C

解説：
Theview/{area}/web/css/source/main.lessfile is the default less file that is included by default. This file contains the main styles for the module.
In a custom module in Adobe Commerce, the default location for including custom LESS styles is typically view/{area}/web/css/source/_module.less. However, the most commonly used file for adding global styles is view/{area}/web/css/source/_extend.less. Theview/{area}/web/css/style.lessfile is not standard, and the main.lessfile is used as an entry point for compilation but typically does not contain custom styles directly.

質問 # 37
Which two attribute input types can be used for a date? (Choose two.)

• A. Schedule
• B. Date and Time
• C. Date
• D. Timezone

正解：B、C

解説：
The two attribute input types that can be used for a date are Date and Time and Date. These input types allow the user to select a date or a date and time from a calendar widget.
The Timezone and Schedule input types do not exist in Adobe Commerce.
Verified References: [Adobe Commerce User Guide - Create a product attribute] In Magento, attribute input types define the type of data an attribute can hold and how it should be inputted or displayed in the UI. For dates, Magento provides specific input types to handle date-related data efficiently.
The "Date" input type is used for attributes that require only a date, without a time component, suitable for birthdays, anniversaries, or any date-specific information. The "Date and Time" input type, on the other hand, includes both date and time components, ideal for events, promotions, or any scenario where the time of day is relevant. These input types ensure data consistency and provide a user-friendly interface for selecting dates and times.

質問 # 38
Which index mode is valid?

• A. Update on invalidate
• B. Update on refresh
• C. Update on save

正解：C

解説：
"Update on save" is a valid index mode in Magento, where the index is set to update automatically whenever a change is saved. This mode ensures that the index remains up-to-date with the latest data changes, such as product or category updates, immediately reflecting these changes on the storefront. This real-time indexing is crucial for maintaining data accuracy and consistency across the Magento site, especially in dynamic environments with frequent updates.

質問 # 39
A logistics company with an Adobe Commerce extension sends a list of reviewed shipment fees to all its clients every month in a CSV file. The merchant then uploads this CSV file to a "file upload" field in admin configuration of Adobe Commerce.
What are the two requirements to display the "file upload" field and process the actual CSV import? (Choose two.)

• A.
• B.
• C.
• D.

正解：A、C

解説：
To display a "file upload" field in the Adobe Commerce (Magento) admin configuration and process the uploaded CSV file, two key requirements must be met:
* Backend Model to Handle File Upload Processing (Option B):The backend model (\My\Module\Model\Config\Backend\ImportFees) is required to extend
\Magento\Framework\App\Config\Value and override the afterSave method. This method will contain the logic needed to process the uploaded CSV file after it has been saved. The backend model is the key component that allows you to handle custom processing, like reading the CSV file and executing the required operations.
* Explanation: The backend model is used in Magento to add logic for saving configuration values in a custom way. Here, it's essential because you need to process the CSV file and potentially save additional data in the database or perform other operations.

質問 # 40
Which CLI command should be used to determine that static content signing is enabled?

• A. bin/magento config:show dev/static/sign/status
• B. bin/magento config:show dev/static/sign
• C. bin/magento config:show dev/static/status

正解：B

解説：
After a thorough search of the provided documents, I couldn't find a direct reference to the specific CLI command for determining if static content signing is enabled in Magento. However, the typical command for checking configuration settings in Magento isbin/magento config:show <path>, where<path>is the configuration path for the setting you wish to view. Based on Magento's configuration path patterns and the options provided, the most logical choice would beB. bin/magento config:show dev/static/sign, although this cannot be confirmed without further context or documentation.

質問 # 41
What is the command used to upgrade ECE-Tools on an Adobe Commerce Cloud platform?

• A. composer update magento/ece-tools --with-all-dependencies
• B. magento-cloud ece-tools:upgrade
• C. php ./vendor/bin/ece-tools upgrade

正解：A

解説：
To upgrade ece-tools on Adobe Commerce Cloud, the recommended command is to use Composer to ensure that all dependencies are resolved and updated accordingly. The command composer update magento/ece- tools --with-all-dependencies will update ece-tools along with any other dependencies required.
* Using Composer for Dependency Management:
* Composer is the standard package manager for PHP and is used to manage dependencies, including ece-tools in Adobe Commerce Cloud. This command ensures that any required dependency updates are also applied.
* Why Option B is Correct:
* Option B leverages Composer's ability to handle dependencies, which is essential to avoid version conflicts.
* Option A (php ./vendor/bin/ece-tools upgrade) does not exist for ece-tools. Option C is incorrect because magento-cloud ece-tools:upgrade is not a valid command for updating ece-tools.

質問 # 42
Which action, if any, should be taken to forbid Adobe Commerce Admin from performing specific actions?

• A. Enable custom roles in the store configuration, and assign admin user ID(s).
• B. This action cannot be taken since all admin users must have full access.
• C. Create a new user role with custom-defined resources, and assign it to the admin user

正解：C

解説：
To forbid Adobe Commerce Admin from performing specific actions, a developer should create a new user role with custom-defined resources, and assign it to the admin user. This can be done by going toSystem > Permissions > Rolesand creating a new role. In theResourcessection, the developer can select the specific resources that they want to restrict the admin user from accessing.
To restrict specific actions within the Adobe Commerce Admin, the recommended approach is to utilize Magento's Access Control List (ACL). This can be done by creating a new user role with custom-defined resources and assigning this role to the admin user. This approach allows for granular control over what actions an admin user can perform by specifying allowed resources within the role. Magento's ACL system is designed to manage permissions effectively, ensuring that users only have access to the necessary functionalities required for their role.

質問 # 43
What is an advantage of the read-only core file system using Adobe Commerce Cloud?

• A. Reduces the number of attackable surfaces significantly
• B. Ensures that all changes to the production environment are tracked.
• C. Improves website performance.

正解：B

解説：
The read-only core file system on Adobe Commerce Cloud ensures that all changes to the production environment are tracked. This is because any changes to the code must go through version control, and the deployment pipeline, which includes stages like build, staging, and production. This approach helps maintain consistency across environments, ensures deployment best practices, and reduces human error by preventing direct changes on production servers.

質問 # 44
How would a developer access RabbitMQ data on an Adobe Commerce Cloud Production environment?

• A. Using RabbitMyAdmin
• B. Using Project Web Interface
• C. Using local port forwarding

正解：C

解説：
The way a developer would access RabbitMQ data on an Adobe Commerce Cloud Production environment is by using local port forwarding. This method allows the developer to connect to the RabbitMQ service instance through an SSH tunnel and access the RabbitMQ Management UI from a web browser. The developer needs to use the magento-cloud ssh command to establish the SSH connection and the
$MAGENTO_CLOUD_RELATIONSHIPS variable to retrieve the RabbitMQ connection details and login credentials.

質問 # 45
An Adobe Commerce Developer has written an importer and exporter for a custom entity. The client is using this to modify the exported data and then re-importing the file to batch update the entities.
There is a text attribute, which contains information related to imagery in JSON form, media_gallery. This is not a field that the client wants to change, but the software they are using to edit the exported data seems to be modifying it and not allowing it to import correctly.
How would the developer prevent this?
A) Specify a serializer class for the attribute using the $_transformAttrs class property array for both the exporter and importer so it gets converted:

B) Strip the attribute from the imported file by adding it to the s_strippedAttrs class property array:

C) Prevent it from being exported by adding it to the $_disat>iedAttrs class property array:

• A. Option C
• B. Option A
• C. Option B

正解：A

解説：
To prevent the media_gallery attribute from being exported as part of the custom entity's data, the developer should add this attribute to the $_disabledAttrs class property array. This effectively excludes the attribute from the export process, ensuring that it does not appear in the exported file and thus will not be modified or re-imported inadvertently.
Option C is correct for the following reasons:
* Preventing Export with $_disabledAttrs:Adding media_gallery to the $_disabledAttrs array tells the system to skip this attribute during export. This prevents the attribute from being included in the export file, thus removing the risk of it being altered by external software that handles the file. Since the attribute will not be present in the exported data, it will remain unchanged in the database when re- importing.
* Explanation: The $_disabledAttrs property is specifically designed to exclude certain attributes from the export process. By using this property, you ensure that attributes not intended for editing or visibility in exports are safely omitted, maintaining data integrity.

質問 # 46
An Adobe Commerce developer is working on a Magento 2 instance which contains a B2C and a B2B website, each of which contains 3 different store views for English, Welsh, and French language users. The developer is tasked with adding a link between the B2C and B2B websites using a generic link template which is used throughout the sites, but wants these links to display in English regardless of the store view.
The developer creates a custom block for use with this template, before rendering sets the translate locale and begins environment emulation using the following code:

They find that the template text is still being translated into each stores language. Why does this occur?

• A. startEnvironmentEmuiation() resets the translation locale to the one of the emulated stores, which overrides the locale the developer has set when the order of setLocate and startEnvironmentEmulation is used as displayed above.
• B. startEnvironmffntEmulation() SetS and locks the locale by Using the setLocale() Optional Second
  $lock parameter, i.e. setLocale($newLocaleCode,
  true), to override and lock the locale of the emulated store. If this is set and locked initially then the environment emulation will not be able to override this.
• C. setLocate() does not change translation locale after it has been initially set, the $this->_translate-
  >emulate($newLocaiecode) method exists to temporarily modify this by pushing the new locale to the top of the current emuiatedLocales stack.

正解：A

解説：
ThestartEnvironmentEmulation()method resets the translation locale to the one of the emulated stores, which overrides the locale the developer has set when the order ofsetLocale()andstartEnvironmentEmulation()is used as displayed above.
The correct way to achieve the desired result is to use theemulate()method to temporarily modify the translation locale. The following code shows how to do this:
PHP
$this->_translate->emulate('en_US');
// Render the template
$this->_translate->revert();
This code will set the translation locale to English before rendering the template, and then revert the locale back to the default value after the template has been rendered.
ThestartEnvironmentEmulation()method is used to emulate a different store view or website. This can be useful for testing purposes, or for developing features that need to work in different environments.
Theemulate()method is used to temporarily modify the translation locale. This can be useful for rendering templates in a specific language, or for testing features that need to work in different languages.

質問 # 47
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)?

• 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.

正解：A

解説：
According to the Develop data and schema patches guide for Magento 2 developers, data patches are classes that contain data modification instructions. They are defined in a <Vendor>/<Module_Name>/Setup/Patch
/Data/<Patch_Name>.php file and implement MagentoFrameworkSetupPatchDataPatchInterface. Data patches can also implement Patchversioninterface to specify the module version that the patch is associated with. The getVersion() method returns the module version as a string. To skip changes that were already applied via old format (install/upgrade scripts), the developer should implement Patchversioninterface and return 1.5.4 on the getVersion() method. This way, the data patch will only be applied if the module version is greater than or equal to 1.5.4. Verified References:https://devdocs.magento.com/guides/v2.3/extension-dev- guide/declarative-schema/data-patches.html

質問 # 48
Which two actions will the developer need to take to translate strings added in JS files? (Choose two.)

• A. $ trans( ,<string>')
• B. translate('<string>');
• C. define ([
  'jquery,
  'mage/translate'
  ), function ($, $t) {."
• D. $.mage._('<string>);

正解：B、C

解説：
To translate strings added in JavaScript files in Adobe Commerce, developers need to use themage/translate RequireJS module along with the$.mage.__('<string>')function to mark strings for translation. This approach ensures that any text strings embedded within JavaScript code can be localized according to the store's current locale, providing a consistent and accessible user experience across different languages and regions. Themage
/translatemodule and the$.mage.__()function work together to retrieve the corresponding translated strings from Magento's translation dictionaries, dynamically replacing the original text in the JavaScript code with the appropriate translations.

質問 # 49
Which type of product would assist a seller who would like to offer an electronic version of an album for sale and sell each song individually?

• A. Simple
• B. Configurable
• C. Downloadable

正解：C

解説：
The type of product that would assist a seller in offering an electronic version of an album and selling each song individually is a Downloadable product. In Adobe Commerce, a Downloadable product type is specifically designed for selling digital products such as music files, which customers can download. This type of product allows sellers to upload individual songs and sell them separately or as part of a complete album.

質問 # 50
An Adobe Commerce developer is creating a new module to extend the functionality of the cart. The module is installed in app/code/CompanyName/ModuleName/.
How would an Adobe Commerce developer extend the existing CartltemPrices GraphQL schema to include a custom base_price field?

• A. Option C
• B. Add the following to the module's etc/schema.graphqis file:
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  C)
  Add the following to the module's etc/graphqi/di.xmi file:
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• C. Option A
• D. Create and Configure a <prefffrence> for Hagento\QuoteGraphQl\Model\Resolver\CartItemPrices that adds the base_price field in the resolve() function.
• E. Option B

正解：B

解説：
The developer can extend the existing CartltemPrices GraphQL schema to include a custom base_price field by adding the following code to the module's etc/schema.graphqls file:
extend type CartltemPrices { base_price: Money! @doc(description: "The base price of the cart item") } This code adds a new field called base_price to the CartltemPrices type and specifies that it is of type Money and it is not nullable. The @doc directive adds a description for the field that will be shown in the schema documentation. The developer also needs to create a custom resolver class for the base_price field and declare it in the di.xml file of the module. Verified References: [Magento 2.4 DevDocs] [Magento Stack Exchange]

質問 # 51
ECE-Tools provides a set of tools that can be used to manage and maintain your Adobe Commerce Cloud environment. What are some of the features provided by ECE-Tools?

• A. Fastly configuration, Applies custom patches and Dump configuration for static content deployment.
• B. Builds application, Applies custom patches and Dump configuration for static content deployment.
• C. Builds application, Applies custom patches, and Shows the list of S3 backup tar.gz files.

正解：B

解説：
Some of the features provided by ECE-Tools are building application, applying custom patches, and dumping configuration for static content deployment. ECE-Tools is a set of scripts and tools designed to manage and deploy Adobe Commerce Cloud projects. It provides commands for building application code, applying patches for Magento core issues or custom modules, and dumping configuration settings for static content deployment optimization. Verified References: [Magento 2.4 DevDocs] 2 The ECE-Tools package for Adobe Commerce Cloud provides a range of tools and scripts to manage and streamline deployment and maintenance tasks. Among its key features:
* Application Builds:
* ECE-Tools handles the build process, which includes compiling the code, preparing static content, and configuring deployment.
* Applying Custom Patches:
* It includes capabilities for managing and applying custom patches to the Adobe Commerce application during deployment, which is essential for customization and bug fixes.
* Dump Configuration for Static Content Deployment:
* ECE-Tools can dump configuration for static content deployment, optimizing the static content deployment process by handling configurations and assets efficiently.
* Why Option A is Correct:
* Option A lists these core functionalities provided by ECE-Tools. Option B incorrectly includes Fastly configuration, which is managed separately. Option C mentions S3 backups, which are not directly handled by ECE-Tools.

質問 # 52
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