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Correct Answer: A, C

To apply a knockout binding to a

to run a function, onClick(), when it's clicked, the developer can use either of the following solutions:

: This solution will use the click binding to execute the onClick() function as an expression when the

is clicked. The function will be called with the current binding context as the first parameter and the event object as the second parameter.

: This solution will use the click binding to execute the onClick function as a reference when the

is clicked. The function will be called with the current binding context as the first parameter and the event object as the second parameter.

The following solutions are not valid and will not work:

: This solution will use the virtual element syntax to apply the click binding, but it will pass a string literal instead of a function expression or reference. This will cause an error, as the click binding expects a function value.

: This solution will use a custom attribute instead of a data-bind attribute to apply the click binding. This is not supported by knockout and will not have any effect.

Question No. 3

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

AOrange/custom/etc

BOrange/custom/translations

COrange/custom/il8n

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Correct Answer: C

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. Reference: [Translations overview], [Translate theme strings]

Question No. 4

What is the difference between styles-l.less and styles-m.less ?

Astyles-i.less is used to generate basic and mobile-specific styles and stytes-m.less is used to generate desktop-specific styles.

Bstyles-i.less is used to generate desktop-specific styles and stytes-m.less is used to generate only mobile-specific styles.

Cstyles-i.less is used to generate desktop-specific styles and stytes-m.less is used to generate basic and mobile-specific styles.

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Correct Answer: C

The styles-l.less and styles-m.less files are two main LESS files that are used to generate CSS files for different devices and screen sizes. The styles-l.less file is used to generate styles-l.css, which contains desktop-specific styles that are applied only when the screen width is greater than 768px. The styles-m.less file is used to generate styles-m.css, which contains basic and mobile-specific styles that are applied for all devices and screen sizes. The other options are not correct and do not reflect the purpose of these files. Reference: [Stylesheets], [Responsive web design]

Question No. 5

An Adobe Commerce developer is trying to remove a block using the

AUS6 <referenceBlock name='test.block' remove='true'/>

BUse <remove name='Custom_Module:test.block'/>

CUse<referenceBlock name='test.block' delete='true'7>

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Correct Answer: A

To remove a block using layout XML, the developer should use the <referenceBlock> tag with the name attribute specifying the name of the block and the remove attribute set to true. For example:

This will remove the block from the layout and prevent it from rendering. The <remove> tag is not valid and will cause an error. The name attribute should not include the module name, as it is not part of the block name. The delete attribute is not valid and will not work. Reference: [Layout instructions], [Remove an element]

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