[Jan-2024] Exam Sure Pass Adobe Certification with AD0-E720 exam questions [Q28-Q44]

AD0-E720 Adobe

admin • January 22, 2024

[Jan-2024] Exam Sure Pass Adobe Certification with AD0-E720 exam questions [Q28-Q44]

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[Jan-2024] Exam Sure Pass Adobe Certification with AD0-E720 exam questions

Real Adobe AD0-E720 Exam Questions Study Guide

Adobe AD0-E720 Exam Syllabus Topics:

Topic	Details
Topic 1	Demonstrate the usage of basic bin Magento commands Differentiate the appropriate use case for deploy modes
Topic 2	Demonstrate the usage of JS components using Layout XML Demonstrate the ability to initialize and call JavaScript components
Topic 3	Distinguish use cases for different JavaScript components Identify the differences between client-side vs server-side compilation and how it works
Topic 4	Demonstrate the ability to implement different types of mixins Demonstrate the ability to customize Page Builder content
Topic 5	Understand the difference between extending merging and overriding XML Demonstrate how to pass and utilize arguments to templates
Topic 6	Demonstrate the ability to override or extend Magento LESS Demonstrate the ability to utilize layout XML instructions
Topic 7	Describe Adobe Commerce theme folder structure and how it relates to folder based themes Demonstrate ability to extend existing themes

Q28. An Adobe Commerce developer is customizing buttons for a custom theme that inherits Magento/blank theme and needs to override the default values. Where would the default values for the buttons be located?

lib/web/css/source/lib/_buttons.less

lib/web/less/source/lib/_buttons.less

lib/web/css/source/lib/_button.less

Explanation
To find the default values for the buttons, the developer needs to look at the lib/web/css/source/lib/_buttons.less file. This file contains various variables, mixins, and styles for defining and customizing buttons. The developer can override these values in their custom theme by using the
.lib-button() mixin or by creating their own mixins or classes. For example:
lib-button( @_button-selector, @_button-type, @_button-shape, @_button-color, @_button-background,
@_button-border, @_button-text-transform, @_button-box-shadow, @_button-hover-color,
@_button-hover-background, @_button-hover-border, @_button-hover-box-shadow ); The lib/web/less/source/lib/_buttons.less and lib/web/css/source/lib/_button.less files are not valid and do not exist. References: [Buttons], [Magento UI library]

Q29. An Adobe Commerce developer wants to completely overwrite _module. less of Orange_Checkout module, in their theme. Where would the developer place the file?

Custom/theme/Orange_Checkout/frontend/web/css/_module.less

Custom/theme/web/css/source/Orange_Checkout/_module.less

Custom/theme/Orange_Checkout/web/css/source/_module.less

Explanation
To completely overwrite _module.less of Orange_Checkout module in a custom theme, the developer should place the file in the Custom/theme/Orange_Checkout/web/css/source directory. This will override the default
_module.less file from the Orange_Checkout module and apply the custom styles to the theme. The Custom/theme/Orange_Checkout/frontend/web/css/_module.less and Custom/theme/web/css/source/Orange_Checkout/_module.less paths are not valid and will not work, as they do not follow the theme structure or the module naming convention. References: [Theme structure], [Module naming convention]

Q30. An Adobe Commerce developer needs to apply a Knockout binding to show content under certain conditions.
Which two syntaxes would achieve this? (Choose two.)

Explanation
Option A and Option C are both valid ways to apply a Knockout binding to show content under certain conditions. Option A uses the visible binding, which sets the display style of the element to none if the value is false. Option C uses the if binding, which removes or inserts the element from the DOM based on the value.
Option B and Option D are incorrect because they use invalid syntax for Knockout bindings. Option B uses a colon instead of an equal sign to assign the value, and Option D uses a single quote instead of a double quote to enclose the value.
https://knockoutjs.com/documentation/binding-syntax.html
https://knockoutjs.com/documentation/binding-context.html

Q31. Which two steps are required to delete a manually installed theme? (Choose two.)

Remove the theme using the theme:uninstall CLI command

Remove the directory app/design/frontend/<VendorNAME/<ThemeName>

Disable the theme from the backend admin configuration

Remove the theme record from the theme database table

Explanation
To delete a manually installed theme, the developer needs to remove the theme directory from the app/design/frontend directory and also delete the corresponding record from the theme table in the database.
The theme:uninstall CLI command is only used for deleting themes thatare installed as Composer packages.
Disabling the theme from the backend admin configuration does not delete the theme files or records, but only makes it unavailable for use. References: [Delete a theme], [theme:uninstall]

Q32. An Adobe Commerce developer wants to initialize a JS component via Layout XML in custom reference block test. component. Which Layout XML instruction would be used to initialize this JS component?

Explanation
Option A is the correct way to initialize a JS component via Layout XML in a custom reference block. The x-magento-init tag is used to specify the component name and the options. Option B is incorrect because it uses the data-mage-init attribute, which is only valid for HTML elements. Option C is incorrect because it uses the x-magento-component tag, which is deprecated and should not be used.
https://developer.adobe.com/commerce/frontend-core/
https://experienceleague.adobe.com/docs/certification/program/technical-certifications/ac/ac-expert/ac-e-fedevel

Q33. An Adobe Commerce developer wants to create a sticky widget.
How would the widget be initialized using the data-mage-init attribute?

Explanation
Option B is the correct way to initialize a widget using the data-mage-init attribute. The attribute value should be a JSON object with the widget name as the key and the widget options as the value. Option A is incorrect because it uses a string instead of an object for the attribute value. Option C is incorrect because it uses a colon instead of a comma to separate the widget name and the options.

Q34. An Adobe Commerce developer wants to create symlinks for the frontend theme named Vendor/Orange using a CSS file: <magento_root>/pub/static/frontend/Vendor/Orange/en_US/css/styles-l.css during development.
Which CLI command would the developer use to create symlinks for the en_US locale?

bin/magento dev:theme:deploy –locale=”en__US” –theme=”Vendor/Orange” css/styles-1

bin/magento dev:source-theme:deploy –type=Mless” –locale=”en_US” –theme=”Vendor/Orange” css/styles-1

bin/magento deploy:mode:set theme –locale=”en_US” –area=”frontend” css/styles-1

Explanation
The bin/magento dev:source-theme:deploy command is used to create symlinks for frontend theme files during development. This command allows the developer to modify source files without running static content deployment every time. The developer can use parameters to specify the type, locale, theme, and file names for creating symlinks. For example, to create symlinks for a CSS file named styles-l.css for the Vendor/Orange theme and the en_US locale, the developer can use:
bin/magento dev:source-theme:deploy –type=less –locale=en_US –theme=Vendor/Orange css/styles-l The other two options are incorrect because they do not create symlinks for frontend theme files. The bin/magento dev:theme:deploy command is used to register themes with Magento and clear caches. The bin/magento deploy:mode:set command is used to change the application mode. References: Adobe Commerce Developer Documentation, Adobe Inc.

Q35. An Adobe Commerce developer was asked to customize a JavaScript component which is written as a function. How would the developer extend the native JavaScript function?

Explanation
To customize a JavaScript component that is written as a function, the developer can use option A. This option will use the prototype property of the function to extend its functionality and add new methods or properties.
For example:
function Component() { // Component logic }
Component.prototype.customMethod = function() { // Custom method logic }; This will create a new method called customMethod on the prototype of the Component function, which can be accessed by any instance of the Component object. The developer can also override existing methods or properties on the prototype by reassigning them with new values.
Option B is not correct because it will not extend the native JavaScript function, but create a new function that wraps the original function. This will not allow the developer to access or modify the properties or methods of the original function. Option C is not correct because it will not extend the native JavaScript function, but create a new object that inherits from the original function. This will not allow the developer to customize the original function itself, but only its instances.

Q36. An Adobe Commerce developer is using a view model within an existing block:

What are two ways to access the view model class in the template? (Choose two.)

$block->getData(‘view_model’)

$block->viewModel()

$block->getViewHodel()

$block->getData(‘viewModel)

Explanation
To access a view model within an existing block, the developer can use either of the following ways:
$block->getData(‘view_model’): This method will return the view model object that is assigned to the argument name “view_model” in the layout XML file. For example:
<referenceBlock name=”blog_posts_list”> <arguments> <argument name=”view_model” xsi:type=”object”>ExampleObjectModel/ExampleObjectModel</argument> </arguments> </referenceBlock> In the template file, the developer can access the view model object by using:
$block->getData(‘view_model’)
$block->getData(‘viewModel’): This method will return the view model object that is assigned to the argument name “viewModel” in the layout XML file. For example:
<referenceBlock name=”blog_posts_list”> <arguments> <argument name=”viewModel” xsi:type=”object”>ExampleObjectModel/ExampleObjectModel</argument> </arguments> </referenceBlock> In the template file, the developer can access the view model object by using:
$block->getData(‘viewModel’)
The following methods are not valid and will not work:
$block->viewModel(): This method does not exist and will cause an error.
$block->getViewHodel(): This method is misspelled and will cause an error.

Q37. An Adobe Commerce developer has been asked to move a block called country from the container sidebar to the container content, the block has to be the last child on the content container.
Which layout instruction would be used to move the block?

Explanation
To move a block from one container to another, the developer needs to use the <move> layout instruction with the element attribute specifying the name of the block and the destination attribute specifying the name of the container. The after attribute can be used to position the block relative to other blocks in the same container.
The value “-” means that the block will be placed after all other blocks, i.e., as the last child. The value
“last-child” is not valid for the after attribute and will not work. The element and destination attributes should use the names of the blocks and containers, not their aliases or classes. References: [Layout instructions],
[Move an element]

Q38. An Adobe Commerce developer has just installed an extension via composer. When running, bin/magento module: status Vendor_Module, the status is returned as Module is disabled.
Which two CLI commands need to be run to make the extension work properly? (Choose two.)

composer install

bin/magento setup:upgrade

composer update vendor/module

bin/magento module:enable Vendor_Module –clear-static-content

Explanation
The developer needs to run these two CLI commands to make the extension work properly:
bin/magento module:enable Vendor_Module –clear-static-content This command enables the extension and clears any outdated static files that might interfere with its functionality.
bin/magento setup:upgrade This command updates the database schema and data according to the extension’s requirements. The other two options are incorrect because they are not necessary to make the extension work properly. The composer install command installs all dependencies specified in the composer.json file, but it does not enable or update any extensions. The composer update vendor/module command updates an existing extension to its latest version, but it does not enable or upgrade it.

Q39. Adobe commerce fronted developer needs to speed up the cloud environment deployment process with predefined theme languages for reducing the number of unnecessary themes files.
Which place developer should add language codes?

SCD_matrix deploy variable in .magento.env.yaml file

relationships property in .magento.app.yaral file

scopes section in config.php file

Explanation
The SCD_matrix deploy variable in the .magento.env.yaml file is used to speed up the cloud environment deployment process by specifying the theme languages for each theme. This reduces the number of unnecessary theme files that are generated during the static content deployment. The developer can add the language codes for each theme in the following format:
SCD_MATRIX: <theme>: <languages>
For example, to specify English and French languages for the Vendor/Orange theme, the developer can use:
SCD_MATRIX: Vendor/Orange: en_US,fr_FR
The other two options are incorrect because they are not related to the theme languages or the static content deployment. The relationships property in the .magento.app.yaml file is used to define how services are connected to the application. The scopes section in the config.php file is used to specify the configuration scope of each module. References: Adobe Commerce Developer Documentation, Adobe Inc.

Q40. An Adobe Commerce developer wants to override the following Layout XML file in the theme ExampleCorp/orange.
app/design/frontend/ExampleCorp/blank/Vendor_Module/layout/catalog_product_view.xml What path would the developer use inside the layout directory of the theme to override the file?

/override/ExampleCorp/blank/catalog_product_view.xml

/override/theme/ExampleCorp/blank/catalog_product_view.xml

/catalog_product_view.xml

Explanation
To override a layout XML file from a parent theme, the developer just needs to place the modified file in the same path relative to the layout directory of the child theme. In this case, the file would be app/design/frontend/ExampleCorp/orange/Vendor_Module/layout/catalog_product_view.xml. The override directory is not used for overriding layout files, but for overriding templates and web assets. References:
[Layout instructions], [Override templates and layout files]

Q41. An Adobe Commerce developer needs to modify the width and height of all product images inside the theme Vendor/theme. What file inside the theme is responsible for these changes?

Vendor/theme/etc/images.xml

Vendor/theme/etc/view.xml

Vendor/theme/etc/theme.xml

Explanation
To modify the width and height of all product images inside a theme, the developer needs to edit the view.xml file inside the etc directory of the theme. The view.xml file contains the configuration for the theme’s images, fonts, and layout. The images.xml file does not exist by default and is not used for configuring images. The theme.xml file is used for specifying the parent theme and other metadata of the theme. References:
[view.xml], [theme.xml]

Q42. An Adobe Commerce developer needs to display a URL in the template. How would the variable $ur1be securely output in the template?

<?php echo $escaper->escapeUrl($url) ?>

<?php echo $escaper->escapeLink($url) ?>

<?php echo $escaper->escapeHtml($url) ?>

Explanation
To display a URL in a template securely, the developer should use the escapeUrl method of the escaper object.
This method will encode any special characters in the URL that can be used for XSS attacks, such as &, <, >,
“, ‘, etc. For example:
<?php echo $escaper->escapeUrl($url) ?>
The following methods are not suitable for displaying URLs and should not be used:
<?php echo $escaper->escapeLink($url) ?>: This method is used for escaping link attributes, not URLs.
It will encode any characters that are valid in URLs but invalid in HTML attributes, such as spaces, quotes, etc. For example:
<?php echo $escaper->escapeLink(‘https://example.com/?q=hello world’) ?> // Output:
https://example.com/?q=hello%20world
<?php echo $escaper->escapeHtml($url) ?>: This method is used for escaping HTML content, not URLs. It will encode any characters that are valid in URLs but invalid in HTML content, such as &, <,
>, etc. For example:
<?php echo $escaper->escapeHtml(‘https://example.com/?q=<script>alert(“XSS”)</script>’) ?> // Output:
https://example.com/?q=<script>alert(“XSS”)</script>

Q43. The merchant needs to create a new website, and is need modify a template the third party vendor’s, because the customer is different. The file is found in a module here: app/code/Vendor/Module Keep it simple in your mind!

Create another layout for the new website and configure new file.phtml.
app/code/Vendor/Module/view/frontend/templates/file.phtml

Create a new module for extends layout.xml and include new file.phtml.
app/code/Vendor/Module_Two/view/frontend/templates/file.phtml

Create a new theme, define a new website and customize in app/design.
app/design/frontend/Custom/Theme/Vendor_Module/templates/file.phtml

Explanation
The best way to customize a template file from a third-party module is to create a new theme that inherits from the parent theme and override the template file in the app/design/frontend/Custom/Theme/Vendor_Module/templates directory. This way, the customization is isolated from the original module and can be applied to a specific website or store view. Creating another layout file or a new module would not be as simple or flexible as creating a new theme. References: Frontend development guide, [Create a theme], [Theme inheritance]

Q44. An Adobe Commerce developer created a module called Orange_Customer. In customer information.
Where would the developer place this file?

app/code/OrangG/customer/viev^/frontend/web/templates/customer-info.phtml

app/code/Orange/Customer/frontend/templates/customer-info.phtml

app/code/OrangG/Custon>Gr/viGw/frontGnd/templates/customGr-info.phtml

Explanation
To place a template file for a custom module, the developer should follow this path pattern:
app/code/<Vendor>/<Module>/view/<Area>/templates/<Template>
In this case, the vendor name is Orange, the module name is Customer, the area is frontend, and the template name is customer-info.phtml. Therefore, the correct path is:
app/code/Orange/Customer/view/frontend/templates/customer-info.phtml
The following paths are not correct and will not work:
app/code/Orange/customer/view/frontend/web/templates/customer-info.phtml: This path is incorrect because it uses web instead of templates, which is used for storing web assets like CSS, JS, and images, not template files.
app/code/Orange/Customer/frontend/templates/customer-info.phtml: This path is incorrect because it misses the view directory, which is required for separating frontend and backend templates.

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