[Dec 16, 2023] Passing Key To Getting AD0-E720 Certified Exam Engine PDF [Q16-Q40]

Published date December 16, 2023

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[Dec 16, 2023] Passing Key To Getting AD0-E720 Certified Exam Engine PDF

AD0-E720 Exam Dumps Pass with Updated Dec-2023 Tests Dumps

QUESTION 16
An Adobe Commerce developer has created a system configuration field:

Using Layout XML, how can the visibility of a block be controlled by a system configuration?

Explanation
To control the visibility of a block using a system configuration, the developer should use the ifconfig attribute in the <block> tag. The ifconfig attribute should specify the path to the system configuration field that determines whether the block is visible or not. For example:
<block name=”block.name” template=”Vendor_Module::template.phtml” ifconfig=”vendor/general/enable” /> This will render the block only if the vendor/general/enable system configuration field is set to true. The module/general/enable and general/module/enable paths are not valid and will not work, as they do not match the system configuration field defined in the image. References: [Layout instructions], [System configuration]

QUESTION 17
An Adobe Commerce developer needs to add a conditional static note depending on whether the order type is virtual or not. Which option would the developer use to add the conditional text in the email template?

Explanation
Option B is the correct way to add a conditional static note depending on whether the order type is virtual or not in the email template. Option B uses the {{trans}} directive to translate the text and the {{depend}} directive to check the value of the order.is_virtual variable. If the order is virtual, the text “Shipping not required.” will be displayed. Option A and Option C are incorrect because they use the wrong syntax for the
{{trans}} and {{depend}} directives. Option A uses curly braces instead of parentheses for the {{trans}} directive and does not use quotes for the text. Option C uses parentheses instead of curly braces for the
{{depend}} directive and does not use a dot to access the order.is_virtual variable.

QUESTION 18
An Adobe commerce developer wants to initialize a JavaScript component using a data attribute. Which option would initialize the JavaScript component?

Explanation
To initialize a JavaScript component using a data attribute, the developer should use the data-mage-init attribute. This attribute allows the developer to specify the name and configuration of the component in a JSON format. For example:
<nav data-mage-init='{“Vendor_Module/js/nav”: {“option1”: “value1”, “option2”: “value2”}}’></nav> This will initialize the nav component from the Vendor_Module/js/nav file with the given options. The data-bind and data-init attributes are not valid and will not work, as they are not supported by Magento.
References: [JavaScript initialization], [data-mage-init]

QUESTION 19
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.

QUESTION 20
An Adobe Commerce developer needs to improve the time of first render of the pages. How would the developer achieve this?

Use the quick static files deployment strategy

Enable CSS critical path

Enable CSS file merging

Enable JavaScript minification

Explanation
CSS critical path is a feature that improves the time of first render of the pages by inlining the CSS rules that are required to render the above-the-fold content of the page. This reduces the number of requests and bytes that need to be downloaded before the page is rendered. CSS critical path can be enabled in the Admin Panel by navigating to Stores > Configuration > Advanced > Developer > CSS Settings and setting Enable CSS Critical Path to Yes. References: Adobe Commerce Developer Documentation, Adobe Inc.

QUESTION 21
An Adobe Commerce developer needs to create translations for the Orange/custom theme. Which directory would the developer place the translations?

Orange/custom/etc

Orange/custom/translations

Orange/custom/il8n

Explanation
To create translations for a theme, the developer needs to place the translation files in the il8n directory of the theme. The translation files should have the format <language code>_<country code>.csv, such as en_US.csv or fr_FR.csv. The etc and translations directories are not used for storing translation files. References:
[Translations overview], [Translate theme strings]

QUESTION 22
An Adobe Commerce Developer is adding a new page layout to the theme directory within a custom theme.
Which file needs to be created to register the new page layout?

app/design/frontend/<VendorName>/<ThemeName>/layouts. xml

app/design/frontend/<VendorName>/<ThemeName>/Magento_Theme/layouts.xnil

app/design/frontend/<VendorName>/<ThemeName>/Magento_Theme/layout/layouts.xml

Explanation
To register a new page layout in a custom theme, the developer needs to create a layouts.xml file in the app/design/frontend/<VendorName>/<ThemeName>/Magento_Theme/layout directory. The layouts.xml file should contain the <layout> element with the id, label, and file attributes. The id attribute is used to reference the layout in other layout files, the label attribute is used to display the layout name in the admin panel, and the file attribute is used to specify the path to the layout file relative to the web directory of the theme. The app/design/frontend/<VendorName>/<ThemeName>/layouts.xml and app/design/frontend/<VendorName>/<ThemeName>/Magento_Theme/layouts.xml files are not valid and will not work. References: [Create a new page layout], [layouts.xml]

QUESTION 23
When using Grunt, which CLI command is used to track changes in the source files and recompiles CSS files?

grunt start

grunt watch

grunt less

Explanation
The grunt watch command is used to track changes in the source files and recompiles CSS files automatically.
This command is useful for frontend development as it allows the developer to see the changes in real time without manually running other commands. The grunt watch command can be run with or without parameters to specify the theme and locale. For example, to track changes for the Vendor/Orange theme and the en_US locale, the developer can use:
grunt watch –theme=Vendor/Orange –locale=en_US
The other two options are incorrect because they do not track changes in the source files. The grunt start command is used to register themes and clear caches before running other commands. The grunt less command is used to compile LESS files to CSS files for a specific theme and locale. References: Adobe Commerce Developer Documentation, Adobe Inc.

QUESTION 24
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

QUESTION 25
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.

QUESTION 26
An Adobe Commerce developer created a new CMS page and set the page title as “My Custom Page”. The page must be accessible at the URL /custom_page.
Which CMS page configuration do they set to make the page accessible at /custom_page?

Under ‘Content”, they set the “Path” field as “custom_page”.

Under ‘Search Engine Optimization”, they set the “URL Key” field as “custom_page”.

Under “Page in Websites”, they set the “URL” field as “custom.page”.

Explanation
The URL Key field under the Search Engine Optimization section is used to specify the URL suffix for the CMS page. The developer can set it as “custom_page” to make the page accessible at /custom_page. The Path field under the Content section is used to specify the path to the template file that renders the CMS page content. The URL field under the Page in Websites section does not exist as a valid configuration option for CMS pages. References: [Adobe Commerce Developer Documentation], [Adobe Inc.]

QUESTION 27
An Adobe Commerce developer needs to debug an issue, where the path of the block template was invalid and the warning was added to a log file. Which mode are errors only written to a log file and not displayed?

developer only

default and production

developer and default

Explanation
The default and production modes are the modes where errors are only written to a log file and not displayed on the screen. This is done to prevent exposing sensitive information to users and attackers. The default mode is the mode that Adobe Commerce runs in by default if no other mode is specified. The production mode is the mode that Adobe Commerce runs in when it is deployed to a live site. The developer can use the following command to check the current mode:
bin/magento deploy:mode:show
The other two options are incorrect because they display errors on the screen as well as writing them to a log file. The developer mode is the mode that Adobe Commerce runs in when it is under development or testing.
The developer mode enables enhanced debugging and error reporting features. References: Adobe Commerce Developer Documentation, Adobe Inc.

QUESTION 28
An Adobe Commerce developer is implementing a sticky sidebar using a jQuery widget. How would the developer initialize the block in a JavaScript file?

Explanation
Option C is the correct way to initialize a jQuery widget in a JavaScript file. The widget name should be prefixed with “mage” and the options should be passed as an object literal. Option A is incorrect because it uses a dot notation instead of a colon to separate the widget name and the options. Option B is incorrect because it uses a string instead of an object literal to pass the options.
https://experienceleague.adobe.com/docs/certification/program/technical-certifications/ac/ac-expert/ac-e-fedevel
https://developer.adobe.com/commerce/docs/

QUESTION 29
An Adobe Commerce developer wants to create a new theme Vendor_Orange which extends from MagentoMuma. Which file is responsible for specifying the parent theme?

view.xml

registration.php

theme.xml

Explanation
The theme.xml file is responsible for specifying the parent theme of a custom theme. The file should contain the <parent> element with the value of the parent theme’s directory, such as
<parent>MagentoMuma</parent>. The view.xml file is used to configure the theme’s images, fonts, and layout. The registration.php file is used to register the theme in the system. References: [Create a theme],
[theme.xml]

QUESTION 30
An Adobe Commerce developer needs to alias URLs and third party libraries inside a require js-config.js file.
Which configuration would the developer use?

Explanation
To alias URLs and third party libraries inside a requirejs-config.js file, the developer should use the paths configuration option. This option allows the developer to map module names to URLs or paths relative to the baseUrl. For example:
var config = { paths: { ‘jquery’: ‘https://code.jquery.com/jquery-3.6.0.min’, ‘custom’:
‘Vendor_Module/js/custom’ } };
This will map the module name ‘jquery’ to the URL of the jQuery library and the module name ‘custom’ to the path of the custom module. The developer can then use these module names in other modules or files without specifying the full URL or path.
Option A is not correct because it uses the shim configuration option, which is used to define dependencies and exports for non-AMD modules, not to alias URLs or paths. Option C is not correct because it uses the map configuration option, which is used to map module names to other module names for specific contexts, not to alias URLs or paths. References: [RequireJS configuration], [RequireJS paths]

QUESTION 31
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]

QUESTION 32
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]

QUESTION 33
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]

QUESTION 34
In which folder can a custom theme favicon be added?

<your_theme_dir>/web/

<your_theme_dir>/Magento_Theme/web/

<your_theme_dir>/assets/images

Explanation
The favicon can be added to the <your_theme_dir>/Magento_Theme/web/ directory of a custom theme. The favicon should have the name favicon.ico and replace the default one from the Magento_Theme module. The
<your_theme_dir>/web/ directory is used for storing web assets that are not specific to any module. The
<your_theme_dir>/assets/images directory does not exist by default and is not used for storing favicons.
References: [Add a favicon], [Theme structure]

QUESTION 35
An Adobe Commerce developer is building a theme Vendor/Orange and needs to customize the header of email templates. Where in the theme does the developer need to place the new template for this customization?

/Magento_Email/templates/override/html/header.html

/Magento_Email/email/header.html

/Magento_Theme/html/header.html

Explanation
To customize the header of email templates, the developer needs to place the new template in the
/Magento_Email/email/header.html path of the theme. This will override the default header template from the Magento_Email module. The /Magento_Email/templates/override/html/header.html path is not valid and will not work. The /Magento_Theme/html/header.html path is used for customizing the header of web pages, not emails. References: [Customize email templates], [Email templates overview]

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