AD0-E724 Free Practice Test

An Adobe Commerce Cloud developer wants to be sure that, even after transferring database from Production to Staging, the payment configurations are still valid on the Staging environment.
What does the developer need to add to be sure that the configurations are always properly set?

1. A. Lines in the dedicated core_conf ig_data_stg table.
2. B. Project level environment variables.
3. C. Environment level environment variables.

Correct Answer: C
The developer needs to add environment level environment variables to be sure that the payment configurations are always properly set on the Staging environment. Environment variables are configuration settings that affect the behavior of the Adobe Commerce Cloud application and services. Environment variables can be set at the project level or the environment level. Project level variables apply to all environments, while environment level variables override the project level variables for a specific environment. The developer can use environment level variables to customize the payment configurations for the Staging environment without affecting other environments. Verified References: [Magento 2.4 DevDocs]

An Adobe Commerce developer is developing a custom module. As part of their implementation they have decided that all instances of their CustomModuleModelExample class should receive a new instance of MagentoFilesystemAdapterLocal.
How would the developer achieve this using di. xml?
A)

B)

C)

1. A. Option A
2. B. Option B
3. C. Option C

Correct Answer: C

A developer found a bug inside a private method of a third party module class. How can the
developer override the method?

1. A. Create a custom class with corrected logic, and define the class as preference in the preferences.xml.
2. B. Create a custom class with the corrected logic, and define the class as a preference for original one in the di xml.
3. C. Create a plugin, implement correct logic in the after" method, and then define the plugin in the di.xml.

Correct Answer: B
To override a private method in a third-party module class, the most effective approach is to use a preference. This involves creating a custom class with the corrected logic and then defining this class as a preference for the original one in thedi.xmlfile. Plugins cannot be used to override private methods, final methods, final classes, or classes created without dependency injection. Therefore, the preference mechanism, which allows for the substitution of the entire class, becomes the viable method to override a private method and modify its behavior.

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?

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

Correct Answer: B
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:
✑ for red-colored error messages.
✑ for informational messages (often displayed in blue).
✑ <comment> for comments or warnings (usually yellow).
$output->writeln('A critical error has occurred.');
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

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: VendorFreeDownloadModelDownload VendorFreeDownloadModelDownloadPdf extends
VendorFreeDownloadModelDownload
VendorFreeDownloadModelDownloadImage extends VendorFreeDownloadModelDownload
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)

1. A. Option A
2. B. Option B
3. C. Option C

Correct Answer: C
To configure a parameter for a parent class so that it propagates to all descendant classes, the correct approach is to define the parameter on the parent class within di.xml. This way, all child classes inheriting from this parent will automatically use the parameter value unless explicitly overridden.
Option C is correct for the following reasons:
✑ Configuring on the Parent Class (Vendor\FreeDownload\Model\Download):By setting the tracking_level parameter directly on the Download class, you ensure that all classes extending this class, such as DownloadPdf andDownloadImage, will inherit the tracking_level parameter value. This method leverages Magento's dependency injection configuration, which allows parameters set on a parent class to cascade to child classes.
✑ uk.co.certification.simulator.questionpool.PList@15a6494
: Magento??s official developer documentation outlines that class dependencies and configuration parameters defined in di.xml at a higher level are accessible to descendant classes. This is a standard practice in Magento for setting parameters that affect a hierarchy of classes.
Avoiding Redundant Configuration:Unlike Option A, which sets the parameter on an individual child class, or Option B, which redundantly sets the parameter on multiple child classes, Option C is optimal as it centralizes the configuration. This reduces the risk of discrepancies and simplifies maintenance.
Options A and B are incorrect because:
Option A configures the parameter on a single child class, which will not affect other child classes such as DownloadImage.
Option B redundantly sets the parameter for each child class individually, which is unnecessary when the parameter can be inherited from the parent.