AD0-E720 Exam Dumps : Adobe Commerce Front-End Developer Expert

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.

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. References: [Create a new page layout], [layouts.xml]