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AD0-E709 Questions and Answers

Question # 1

An Adobe Commercedeveloper is working on an Acme_Exceptions module which is supposed to overwrite logic inside some of Magento native exceptions such as \Magento\Frame-work\Exception\NoSuchEntityException or\Mogento\Framwork\GraphQ1\Exception\GrephQlInputException , The module is open-source and will be available on packagist.org.

The build of the codebase of projects, including the module, will sometimes take place in docker containers with full access to filesystem. but then it is deployed to a read-only filesystem.

Which two approaches would the developer use to overwrite logic in those exceptions? (Choose two.)

A.

1. Create a version of those exceptions inside the module using the original namespaces and classes, e.g. \Magento\Framewrk\Exception\NoSuchEntityException .

2. Use composer's extra > nap node to copy those exceptions to their original destinations like vendor/Magento/framework/exception/ to replace original files.

B.

1. Create a version of those exceptions inside the module using new namespace, e.g.

\Acme\Exceptions\Exception\NoSuchEntityException .

2. Create a di.xmi file inside of the module and use to make the system use own versions instead of native versions.

C.

1. Create a version of those exceptions inside the module using the original namespaces and Classes, e.g. \Magento\Framework\Exceptioin\NoSuchEntityException .

2. Use composer's scripts > post-install-and and scripts > post-update-cmd nodes to copy those exceptions to their original destinations like

vendor/Magento/framework/exception/ to replace original files.

D.

1. Create a version of Those exceptions inside the module using the original namespaces and classes, e.g. \Magento\Framework\Exception\NoSuchEntityException .

2. Create a data patch copying those exceptions to their original destinations like vendor/magento/ framework /except Ion/ to replace original files.

Question # 2

An Adobe Commerce developer has been taskedto create a new rest API endpoint to get a list of items for a CustomEntity . When testing the endpoint, it throws an exception.

This is the code the developer has written forMyVendor\Module\Api\CustomEntityRepositoryInterface:

AD0-E709 question answer

And this is the implement method within MyVendor\MyModulemodel\CustomEntityRepository:

AD0-E709 question answer

What is wrong with the code?

A.

The @return annotation is missing in the MyVendor\MyModule\Api\CustomEntityRepositoryInterface::getList function.

B.

The implemented getlist function is returning an array, it should return an instance of MyVendor\MyModule\Api\Data\CustomerEntitySearcResultslnterface .

C.

Magento\Framework\Api\SerchCriteriaInterface $searchCriteria is not a valid parameter for the getList function.

Question # 3

When building a custom page we need to get a collection of data. To determine how many items are in this collection, the Adobe Commerce developer uses $collection->count() . This sometimes is slow and causes some delay.

What is the reason?

A.

The collection is loaded first and then the number of items in the collection are returned.

B.

Before the collection is loaded, the framework performs left joins for all related attributes are added to the query.

C.

The framework internally uses SELECT count(-) and that is slower than loading the collection.

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