Adobe AD0-E722 Practice Test - Questions Answers

According to the Adobe Commerce documentation, the output of a GraphQL mutation is declared by specifying the type of the data returned by the mutation. The type can be either a scalar type (such as String, Int, Boolean, etc.), an object type (such as Cart, Product, Customer, etc.), or a union type (such as SearchResult, which can be either Product or Category). A union type is used when the mutation can return more than one possible type of data, depending on the input or the logic of the mutation. In this case, the mutation can return either a Cart type or a ConfigurableProduct type, depending on the number of variants of the configurable product. Therefore, the output of the mutation should be declared as a union type that includes both Cart and ConfigurableProduct types. Option B is the only option that correctly declares a union type using the pipe symbol (|) to separate the possible types. Option A and Option C are incorrect because they use brackets ([ ]) and curly braces ({ }), which are used for declaring list types and input object types, respectively.

GraphQL API - Adobe Inc.

Schema language with GraphQL | Adobe Commerce

According to the Adobe Commerce documentation, OAuth-based authentication is the recommended method for integrations that need access to system resources, such as orders, customers, products, etc. OAuth-based authentication allows the merchant to control the access level and scope of the integration, as well as to revoke the access at any time using the admin panel. OAuth-based authentication also requires an OAuth handshake between the integration and the Adobe Commerce system during activation, which ensures a secure exchange of tokens and keys. The third-party system should follow the OAuth protocol to obtain and refresh the access token, which will be used as the Bearer Token to authorize the REST API calls.

Authentication | Adobe Commerce Developer Guide

OAuth-based authentication | Adobe Commerce Developer Guide

According to the Adobe Commerce documentation, to create a new xml configuration file, the Architect needs to create a Data class and a Reader class for the custom module. The Data class is responsible for storing and retrieving the configuration data from the cache or the Reader class. The Data class should implement the ''\Magento\Framework\Config\Data'' interface or extend the ''\Magento\Framework\Config\Data'' class. The Reader class is responsible for reading and validating the xml configuration files from the file system. The Reader class should implement the '\Magento\Framework\Config\Reader\Filesystem' interface or extend the '\Magento\Framework\Config\Reader\Filesystem' class. The Architect also needs to declare the Data class and the Reader class in the di.xml file of the custom module, and specify the name of the xml configuration file, the converter class, and the schema locator class for the Reader class.

Configuration types | Adobe Commerce - Experience League

Create configuration types | Adobe Commerce - Experience League

According to the Adobe Commerce documentation, the correct approach to change the stopwords directory inside a custom module is to use dependency injection to override the default values of the stopwordsDirectory and stopwordsModule parameters of the \Magento\Elasticsearch\SearchAdapter\Query\Preprocessor\Stopwords class. The stopwordsDirectory parameter specifies the relative path of the stopwords directory from the module directory, while the stopwordsModule parameter specifies the name of the module that contains the stopwords directory. By adding these parameters to the di.xml file of the custom module, the Architect can change the location of the stopwords files without modifying the core code or database.

To change the directory from your module

Configure Elasticsearch stopwords

According to the Adobe Commerce documentation, the Source Selection Interface is the main interface for implementing custom source selection algorithms. The interface defines a method called execute(), which takes a list of items to be shipped and a stock ID as parameters, and returns a SourceSelectionResultInterface object, which contains the recommended sources and quantities for each item. The Architect can create a new class that implements this interface and provides the logic for finding the lowest-cost warehouse that is open for each item. The Architect can then register the new class as an option for the source selection algorithm in the di.xml file of the custom module.

Source Selection Algorithm | Adobe Commerce Developer Guide

Source Selection Interface | Adobe Commerce Developer Guide

Option B is a valid solution because creating a new HTTP Context variable can allow for differentiating the public content cache for users who belong to a B2B company account.The HTTP Context variable can be used to modify the output of the header block accordingly, without affecting the performance or scalability of the site1

Option D is also a valid solution because creating a new custom condition for customer segments can enable targeting users who are part of a B2B company account. The customer segment can be used to modify the output of the header block accordingly, using layout updates or dynamic blocks.This solution can also leverage the existing customer segment functionality and avoid custom coding2

Option A is not a valid solution because switching the theme based on a virtual type can cause performance issues and increase the complexity of the site maintenance.Moreover, switching the theme can affect the entire site appearance, not just the header block3

Option C is not a valid solution because using the customer session data directly to modify the output of the header block can prevent the public content cache from working properly.The customer session data is private and cannot be cached, so this solution can negatively impact the performance and scalability of the site4

Option E is not a valid solution because checking if the current user is part of a B2B company within a block class can also prevent the public content cache from working properly.The block class logic is executed on every request, so this solution can negatively impact the performance and scalability of the site5

1: https://experienceleague.adobe.com/docs/commerce-cloud-service/user-guide/architecture/starter-architecture.html?lang=en#http-context2: https://experienceleague.adobe.com/docs/commerce-cloud-service/user-guide/marketing/customer-segments.html?lang=en3: https://experienceleague.adobe.com/docs/commerce-cloud-service/user-guide/design/themes.html?lang=en4: https://experienceleague.adobe.com/docs/commerce-cloud-service/user-guide/architecture/starter-architecture.html?lang=en#private-content5: https://experienceleague.adobe.com/docs/commerce-cloud-service/user-guide/architecture/starter-architecture.html?lang=en#public-content

Option C is the correct solution because declaring a capture command with type Magento\Payment\Gateway\Command\NullCommand for the payment method command pool in di.xml will prevent the default capture logic from being executed. The NullCommand class is a dummy implementation of the CommandInterface that does nothing.This way, the payment capture will be handled by the PSP webhook, and the invoice will be created accordingly12

Option A is not a correct solution because adding a plugin before the $invoice->capture() and changing its input to prevent the call of the $payment->capture() will require modifying the core Magento code, which is not recommended.Moreover, this solution will affect all payment methods that use the invoice capture logic, not just the monthly installments payment extension3

Option B is not a correct solution because changing the can_capture attribute for the payment method under config.xml to be <can_capture>0</can_capture> will disable the capture functionality for the payment method entirely.This means that the invoice cannot be created or captured, even by the PSP webhook4

1: https://experienceleague.adobe.com/docs/commerce-cloud-service/user-guide/payments-integrations/payment-gateway/gateway-command.html?lang=en2: https://github.com/magento/magento2/blob/2.4-develop/app/code/Magento/Payment/Gateway/Command/NullCommand.php3: https://experienceleague.adobe.com/docs/commerce-cloud-service/user-guide/customization/best-practices.html?lang=en#do-not-modify-core-code4: https://experienceleague.adobe.com/docs/commerce-cloud-service/user-guide/payments-integrations/payment-gateway/payment-gateway-configuration.html?lang=en#payment-method-configuration

This solution ensures that the data returned by the GraphQL queries is up to date, while also maintaining performance. By specifying a $cache(cacheidentity: Path\To\identityclass) directive for each GraphQL query, the relevant brands and associated products will be added as cache tags.

EAV attribute import uses the REPLACE statement, which deletes and inserts a new row with the same primary key value. This causes the auto-increment column to increase by one for each row, even if the row already exists. If the auto-increment column reaches its maximum value, which is 2147483647 for a signed INT, then any further REPLACE statement will fail with an integrity constraint violation error.Reference:

EAV and extension attributes | Magento 2 Developer Documentation

GitHub - techdivision/import-attribute: This library provides the functionality for the Magento 2 import of EAV attributes

Data integrity in JSON (B) when replacing EAV - Stack Overflow