PROFESSIONAL DEVELOPER TEST POOL-1 (MAGENTO 2 CERTIFIED )

Question 1

You see this code in etc/adminhtml/routes.xml:
<route id="mymodule" frontName="user-subscriptions">
<module name="MyCompany_MyModule" />
</route> You have placed a controller in Controller/Index/Subscribe.php. If you want to create layout XML instructions for this controller, what would be the layout XML's filename?

Accepted Answer

mymodule_index_subscribe.xml

Answer

mymodule_subscribe_[ACTION NAME].xml

Answer

user_subscriptions_index_subscribe.xml

Answer

user_subscriptions_subscribe_[ACTION NAME].xml

Question 2

You have created a new product type, sample, and need to customize how it renders on the shopping cart page. Keeping maintainability in mind, how do you add a new renderer?

Accepted Answer

Create the layout file, checkout_cart_item_renderers.xml, reference the checkout.cart.item.renderers block and add a new block with an as="sample" attribute.

Answer

Override the cart/form.phtml template and add logic for the sample product type.

Answer

Create the layout file, checkout_cart_index.xml, and reference the checkout.cart.renderers block and add a block with the as="sample" attribute.

Answer

Create the layout file, checkout_cart_index.xml, and update the cart page's uiComponent to appropriately render the sample product type.

Question 3

You are building an tool that imports products from an ERP. There are 20 columns of additional information that are associated with each product. This extra information must also be associated with an update time to know when to refresh the data. Keeping maintainability in mind, how do you build this into Magento?

Accepted Answer

Utilize an extension attribute.

Answer

Override the Product model and add the fields.

Answer

Create a separate model and build code to associate the two record types.

Answer

Create 20 EAV attributes and check their updated_at column.

Question 4

What interface should a frontend controllers action implement?

Accepted Answer

\Magento\Framework\App\ActionInterface

Answer

\Magento\Frontend\Controller\ActionInterface

Answer

\Magento\Frontend\Controller\ControllerInterface

Answer

\Magento\Framework\App\ControllerInterface

Question 5

You are making some major adjustments to a core Magento class (ClassA). These adjustments are only necessary when utilized from a specific Magento class (ClassB). You have created MyClass that contains the needed customizations.
Keeping upgradeability in mind, how do you configure di.xml to make the substitution happen?

Accepted Answer

Ensure that MyClass extends ModuleA and set the <argument/>, for ModuleB to point to your new class in di.xml.

Answer

Set a <preference/> for ModuleA to be replaced by MyClass

Answer

Create a rewrite node that injects MyClass into ClassB.

Answer

Create a virtual type that extends ModuleB, specifying an <argument/> for MyClass.

Question 6

You are customizing the display of  product details page. On this page ur customer  need to change the url in which the product category name will be appear as http://mystore.com/women/tops-women/helena-hooded-fleece.html , Keeping ,maintainability in mind ,How to get product url with category?

Accepted Answer

Admin -> Stores -> Configuration -> Catalog -> Catalog -> Search Engine Optimization -> "Use Categories Path for Product URLs" set to "Yes"

Answer

It is not possible to display Categories name on product url

Answer

$product->setCategoryId($categoryId)->getProductUrl();

Answer

You Can Build category URL path \vendor\magento\module-catalog-url-rewrite\Model\CategoryUrlPathGenerator.php

Question 7

You are building a new module to add extra functionality to the Magento application. What files are required?

Accepted Answer

registration.php

Accepted Answer

etc/module.xml

Accepted Answer

composer.json

Answer

Setup/InstallSchema.php

Answer

etc/config.xml

Question 8

You need to add the Google Tag Manager (GTM) to every page.  What three steps do you take to accomplish this in MyCompany_MyModule?

Accepted Answer

Add into view/frontend/layout/default.xml.

Accepted Answer

Create view/frontend/layout/default.xml.

Accepted Answer

Create view/frontend/templates/script.phtml and add GTM code.

Answer

Run bin/magento create:module:template script.phtml

Answer

Copy vendor/module-catalog/view/template/script.phtml to view/template/script.phtml and add GTM script.

Question 9

You need to control access to a custom controller action. How do you tell Magento about this new control option?

Accepted Answer

Create etc/acl.xml and add <resource id="MyCompany_MyModule::customAction" ... />

Answer

In the controller, implement the _isAllowed method.

Answer

Create etc/adminhtml/acl.xml and add <acl id="MyCompany_MyModule::customAction" ... />

Answer

Use the CLI to add the new resource option.

Question 10

You are trying to determine why a product is not appearing in a category. What table does Magento on the frontend to locate the relationship between a category and its products?

Accepted Answer

catalog_category_product

Answer

catalog_product_parent

Answer

catalog_category_product_index

Answer

catalog_category_product_relationship

Question 11

How do you instruct Magento to enable a new module?

Accepted Answer

bin/magento module:enable MyCompany_MyModule

Answer

Magento automatically enables all new modules.

Answer

Go to Admin > System > Module Management.

Answer

Add MyCompany_MyModule to the setup_module table.

Question 12

As you are scanning folder in the vendor/module-catalog directory, you see a directory that is named Ui. 
What is this folder's purpose?

Accepted Answer

It contains UI component data providers and component information.

Answer

It contains templates, CSS and JS pertinent to the module.

Answer

It contains the block PHP files that render HTML onto the frontend.

Answer

It is not a normal folder and further investigation is necessary to determine the purpose.

Question 13

You are updating a  module to add extra functionality to the Magento application, Where would Magento look for modules?

Accepted Answer

app/code/VendorName/ModuleName

Accepted Answer

vendor/vendor-name/module-name

Answer

app/vendor/vendor-name/module-name

Answer

lib/vendor-name/module-name

Question 14

You are reviewing  a  module to some special  functionality to the Magento 2 application, You see directory /Console, What task you think in this directory contain script for this  modules?

Accepted Answer

contains CLI commands

Answer

contains any PHP classes exposed to the API

Answer

contains cron job definitions.

Answer

contains section files

Answer

open directory /Console & check script what code contaib

Question 15

You are reviewing  a  module to some special  functionality to the Magento 2 application, You see directory /CustomerData, What task you think in this directory contain script for this  modules?

Accepted Answer

Contains section files that works with the data stored on the client side.

Answer

contains aggregated functionality.

Answer

contains localization files.

Answer

contains view files, including static view files, design templates, email templates, and layout files.

Question 16

You are building a new module to add extra functionality to the Magento application.You want to works with CustomerData  the data stored on the client side.  Where initialized sections Cart and Directory-data are  on the server side via the classes ?

Accepted Answer

Magento\Checkout\CustomerData\Cart and Magento\Checkout\CustomerData\DirectoryData

Answer

Magento\Checkout\Api\Cart and Magento\Checkout\Api\DirectoryData

Answer

Magento\Checkout\Block\Cart and Magento\Checkout\Block\DirectoryData

Answer

Magento\Checkout\Plugin\Cart and Magento\Checkout\Plugin\DirectoryData

Question 17

Magento and third-party developers can find it difficult to track and report the dependencies that customized extensions have on other extensions. To address these issues, the Magento system introduces service contracts. What is a Service Contracts - Data interfaces ?

Accepted Answer

set of PHP interfaces that are defined for a module includes data interfaces

Answer

set of API interfaces that are defined for a module includes web APIs

Answer

set of UI Library that are defined for a module includes ui content

Answer

set of JS Library that are defined for a module includes js Library

Question 18

You have created a module to show manufacturer-list, but in your page need to show Pagination that already ready in your block. Keeping maintainability in mind, where you call echo $block->getPagerHtml(); ?

Accepted Answer

/Manufacturer/view/frontend/templates/content.phtml

Answer

/Manufacturer/Block/Index.php

Answer

/Manufacturer/Controller/Index/Index.php

Answer

/Manufacturer/view/frontend/layout/manufacturer_index_index.xml

Question 19

You have created a module to show manufacturer-list,Your customer need url as www.storeurl/manufacturer which file are mendatory to show correct url?

Accepted Answer

Controller: /Manufacturer/Controller/Index/Index.php

Accepted Answer

Block: /Manufacturer/Block/Index.php

Accepted Answer

Layout: Manufacturer/view/frontend/layout/manufacturer_index_index.xml

Answer

Templates:/Manufacturer/view/templates/content.phtml

Answer

Layout: Manufacturer/view/frontend/layout/index_index.xml

Answer

Layout: Manufacturer/view/frontend/layout/manufacturer.xml

Question 20

You are facing a bug, which is supposedly caused by the customization of \Magento\Catalog\Api\ProductRepositoryInterface::save(). To resolve the issue, you decide to find all logic which customizes this method. Which two places do you search for customization declarations? (Choose 2)

Accepted Answer

*/di.xml

Accepted Answer

*/events.xml

Answer

*/config.xml

Answer

*/plugins.xml

Question 21

You are implementing a customization of the sales management within a module MyCompany_MySalesProcess. You have created several event observers to add the custom functionality. Each observer is a separate class, but they require some common functionality.
How do you implement the common functionality in the event observers, keeping maintainability and testability in mind?

Accepted Answer

You create a regular class implementing the common functionality as public methods and use constructor injection to make them available to the observers.

Answer

You create a trait with the common methods and use the trait in the observer classes.

Answer

You create a regular class implementing the common functionality as public static methods and call those from the observers.

Answer

You create an abstract class AbstractObserver with the common methods and extend the observer classes from it.

Question 22

A custom module is performing an optimized custom query for quote items. The class applies the query customizations on the select object of a quote item collection instance.
public function __construct(
\Magento\Quote\Model\ResourceModel\Quote\Item\Collection $collection) {
$this->collection = $collection;
}
public function fetchData() {
$select = $this->collection->getSelect();
... code modifying $select...
return $this->collection->getData();
}
You are tasked to resolve an issue where the query sometimes does not deliver the expected results. You have debugged the problem and found another class is also using a quote item collection and is loading the collection before the custom module. How do you resolve the issue, keeping maintainability in mind

Accepted Answer

You change the argument type to \Magento\Quote\Model\ResourceModel\Quote\Item\CollectionFactory and
instantiate the collection using $collectionFactory->create();

Answer

You remove the constructor argument and use ObjectManager::getInstance()-
>create(\Magento\Quote\Model\ResourceModel\Quote\Item\Collection::class) to instantiate the collection instead.

Answer

You inject \Magento\Framework\DB\Select instead of the collection and perform the desired query independently of the collection.

Answer

You inject \Magento\Quote\Api\CartItemRepositoryInterface because low level query customizations are not allowed.

Question 23

In a custom module you implement the interface \Magento\Framework\App\Config\DataInterface.
/** Configuration data storage  @api */
interface DataInterface {
public function getValue($path);
public function setValue($path, $value);
} What version constraint for magento/framework do you add to your module’s composer.json file?

Accepted Answer

minor

Answer

major

Answer

patch

Answer

stable

Question 24

You are building CLI that use the console to create a customer account with our custom command as like
php bin/magento customer:user:create --customer-firstname="Mahin" --customer-lastname="Rahman" --customer-email="mahin@example.com" --customer-password="mahin@123" --website="1"
using:  protected function configure() { $this->setName('customer:user:create') ->setDescription('Create new customer') ->setDefinition($this->getOptionsList());    }   protected function getOptionsList(){       return [ ------------------];    }  Which below Option  are not required in blank? (Choose 2)

Accepted Answer

new InputOption(Customer::KEY_SENDEMAIL, 0, InputOption::VALUE_OPTIONAL, '(1/0) Send email? (default 0)')

Accepted Answer

new InputOption(Customer::KEY_STORE, null, InputOption::VALUE_REQUIRED, '(Required) Store ID'),

Answer

new InputOption(Customer::KEY_PASSWORD, null, InputOption::VALUE_REQUIRED, '(Required) Customer password'),

Answer

new InputOption(Customer::KEY_EMAIL, null, InputOption::VALUE_REQUIRED, '(Required) Customer email'),

Answer

new InputOption(Customer::KEY_LASTNAME, null, InputOption::VALUE_REQUIRED, '(Required) Customer last name'),

Answer

new InputOption(Customer::KEY_FIRSTNAME, null, InputOption::VALUE_REQUIRED, '(Required) Customer first name'),

Answer

new InputOption(Customer::KEY_WEBSITE, null, InputOption::VALUE_REQUIRED, '(Required) Website ID'),

Question 25

You are building CLI that use the console to create a customer account with our custom command, Adding a new command to CLI is based on passing on the argument from the XML level to the class . Dependency Injection comes in handy here. you create the file app/code/Mycompany/Customer/etc/di.xml with the following content: What is the correct in below?

Accepted Answer

Magento\Framework\Console\CommandList

Answer

Magento\Framework\Console

Answer

Magento\Framework\CommandList

Answer

Magento\Framework\CommandList\Console

Question 26

You are creating a new indexer which must run after the targetrule_product_rule index process. When you run bin/magento indexer:reindex, your rule always runs first creating inaccurate data. What is the resolution?

Accepted Answer

Use a dependencies node in your indexer configuration

Answer

Specify the sortOrder in your indexer configuration.

Answer

Use a plugin on the IndexManager class to change load order.

Answer

Create a bash script to execute each indexer in the correct order.

Question 27

You need to render a product attribute’s raw value as a variable in a script tag. This value will be used to initialize an application on the frontend.  How do you render this value?

Accepted Answer

<?= $block->escapeJs($value) ?>

Answer

<?= $block->escapeJsVar($value) ?>

Answer

<?= $block->renderJs($value) ?>

Answer

<?= $block->escapeHtml($value) ?>

Question 28

You need to add a new column to the sales_shipment and the sales_shipment_grid tables. Other than utilizing the default addColumn methods, what way is automatic?

Accepted Answer

Utilize the SalesSetup class’ addAttribute method.

Answer

On the default EavSetup class, utilize the addColumn method.

Answer

On the ModuleDataSetupInterface, call $setup->getSales()->addColumn().

Answer

Ensure your UpgradeSchema class extends CoreSetup and call $this->addSalesColumns().

Question 29

You are creating a module that will be sold on the Magento Marketplace. You wish for this module to be easily extensible, and decide to add the capability for other developers to utilize extension attributes. What is the minimum update necessary to enable this capability?

Accepted Answer

Add the getExtensionAttributes() method and implement ExtensionAttributesInterface in each model.

Answer

Create an ExtensionAttributeInterface for each model.

Answer

Ensure each model extends Magento\Framework\Model\AbstractExtensibleModel.

Answer

Configure your models in etc/extension_attributes.xml

Question 30

There is a custom extension called MyCompany_MyModule. It has the following layout customization declared in MyCompany/MyModule/view/frontend/layout/default.xml: What will be the result of the customization?

Accepted Answer

All store front pages will be non-cacheable

Answer

Only the default landing page will be non-cacheable

Answer

my.block on the default landing page only will be cached using ESI.

Answer

my.block on the all store front pages will be cached using ESI

PROFESSIONAL DEVELOPER TEST POOL-1 (MAGENTO 2 CERTIFIED )

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