Adobe AD0-E720 Adobe Commerce Front-End Developer Expert Exam Practice Test

Answer : B, D

To add text to an email template that supports translations, the developer should use the {{trans}} directive with the text enclosed in double quotes. For example:

{{trans ''Lorem Ipsum is simply dummy text of the printing''}}

This will render the text as it is, or translate it if a translation file is available for the current locale. If the text contains a variable, the developer should use a placeholder with a percent sign and pass the variable name as an argument. For example:

{{trans ''%items items'' items=''numItems''}}

This will render the text with the value of numItems replacing the %items placeholder, or translate it if a translation file is available for the current locale. The {{translations}} directive is not valid and will not work. Reference: [Translate email templates], [Email template syntax]

Answer : A

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. Reference: [Layout instructions], [System configuration]

Answer : A

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>

Answer : C

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.

Answer : A, C

To pass JSON data to a JavaScript component while keeping XSS prevention strategies in mind, the developer should use the following options:

Option A: Use the x-magento-init script tag with the data-mage-init attribute and the JSON.parse function to initialize the component with the JSON data. This option is secure because it does not use any HTML tags or attributes that can be exploited by XSS attacks.

Option C: Use the text/x-magento-init script tag with the type attribute and the JSON.parse function to initialize the component with the JSON data. This option is secure because it does not use any HTML tags or attributes that can be exploited by XSS attacks.

The following options are not secure and should not be used:

Option B: Use the script tag with the type attribute and the escapeHtmlAttr function to initialize the component with the JSON data. This option is not secure because it uses the escapeHtmlAttr function, which is meant for escaping HTML attributes, not JSON data. This function can introduce double quotes in the JSON data, which can break the JSON syntax and cause errors.

Option D: Use the script tag with the type attribute and the escapeJsQuote function to initialize the component with the JSON data. This option is not secure because it uses the escapeJsQuote function, which is meant for escaping JavaScript strings, not JSON data. This function can introduce backslashes in the JSON data, which can break the JSON syntax and cause errors.

Answer : A, D

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''> ExampleObjectModel/ExampleObjectModel </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''> ExampleObjectModel/ExampleObjectModel </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.

Answer : B

To override the template assigned to a block in a module, the developer needs to use the <referenceBlock> layout instruction with the name attribute specifying the name of the block and the template attribute specifying the path to the new template file. In this case, the code would be:

<referenceBlock name=''existing.product.block'' template=''Orange_CustomProduct::custom-product-block.phtml''/>

Option A is not valid because it uses <block> instead of <referenceBlock>, which would create a new block instead of referencing an existing one. Option C is not valid because it uses instead of <template>, which would not change the template of the block. Option D is not valid because it uses an incorrect syntax for the template attribute, which should use two colons instead of a slash. Reference: [Layout instructions], [Override templates and layout files]