To register a new page layout in a custom theme, the developer needs to create a layouts.xml file in

the app/design/frontend///Magento_Theme/layout directory. The

layouts.xml file should contain the 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///layouts.xml

and

app/design/frontend///Magento_Theme/layouts.xml files are not

valid and will not work. Reference: [Create a new page layout], [layouts.xml]

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.

Reference: [Layout instructions], [Override templates and layout files]

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”>

<argument

name=“view_model”

xsi:type=“object”>ExampleObjectModel/ExampleObjectModel

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”>

<argument

name=“viewModel”

xsi:type=“object”>ExampleObjectModel/ExampleObjectModel

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.

To remove the default Wishlist and Compare Products blocks on a category page with layered

navigation,

the

developer

should

place

the

modification

in

the

app/design/frontend/Vendor/Theme/Magento_LayeredNavigation/layout/catalog_category_view_t

ype_layered.xml file. This file is specific to the category pages with layered navigation and will

override the default layout file from the Magento_LayeredNavigation module. The modification

should use the tag with the name attribute specifying the name of the block and

the remove attribute set to true. For example:

<referenceBlock

name=“catalog.compare.sidebar”

remove=“true”/>

<referenceBlock

name=“wishlist_sidebar” remove=“true”/>

The

app/design/frontend/Vendor/Theme/Magento_LayeredNavigation/layout/override/catalog_categor

y_view_type_layered.xml file is not valid and will not work, as it is not a valid override path. The

app/design/frontend/Vendor/Theme/Magento_Catalog/layout/catalog_category_view.xml file is not

specific to the category pages with layered navigation and will affect all category pages. Reference:

[Layout override], [Remove an element]

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.

To

override

the

parent

theme

styles,

the

developer

needs

to

change

the

web/css/source/_extend.less file in the child theme. This file is used to import and extend the parent

theme styles without modifying the original files. The developer can use the @import directive to

import the parent theme styles and then use the .lib-css() mixin to override the CSS properties. For

example:

@import ‘source/_extend.less’; // Import parent theme styles .lib-css(color, red); // Override color

property

The web/css/source/_extends.less and web/css/source/_theme.less files are not valid and will not

work, as they do not follow the theme structure or the naming convention. Reference: [Theme

inheritance], [Extend parent theme styles]

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/acexpert/ac-e-fedeveloper0623.html?lang=en

https://developer.adobe.com/commerce/docs/

To add the text Happy Birthday. to be translated inside an .html template, the developer should use the i18n binding. This binding allows the developer to specify the text as a string literal and translate it using the Magento translation mechanism. For example: This will render the text as it is, or translate it if a translation file is available for the current locale. The i18n binding can also accept variables or expressions as arguments. For example: This will render the text with the value of name variable, or translate it if a translation file is available for the current locale. The Mil8n and il8n bindings are not valid and will not work, as they are misspelled and do not match the knockout binding syntax. Reference: [Knockout bindings], [i18n binding]

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 that are 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. Reference: [Delete a theme],

[theme:uninstall]

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.