Adobe Adobe Certifications AD0-E703 Questions & Answers

• Question 111:

  You are developing a module and need to add another column to a table introduced by another module MyCompany_MyModule via db schema.

  How do you do that?

  A. Create a etc/db_schema.xml file in your module, add the column and run bin/magento setup:upgrade

  B. Create a etc/db.xml file in your module, add the column and run bin/magento setup:dbschema:upgrade

  C. Run a command: bin/magento setup:db-schema:upgrade [table]

  D. Create a etc/db_schema_whitelist.json file in your module, add the column and run bin/magento setup:upgrade

  Correct Answer: A

• Question 112:

  In a code review of a merchant's site you have discovered that there are multiple observers for the checkout_submit_all_after event. After closer inspection, you notice one of these observers is relying on the others being executed before it is called.

  What risk does this pose, and how can it be mitigated?

  A. There is no risk posed as long as each event observer specifies a correct sortOrder. Nothing needs to be changed.

  B. Event observers are fired in alphabetical order of the observer name. There is no risk here.

  C. Magento only supports one observer per event. These observers will need to be combined into a single point of customization.

  D. Order of listener execution cannot be guaranteed, resulting in a fragile implementation. This code should be re-worked using plugins

  Correct Answer: D

• Question 113:

  You are reviewing a Magento module and see a directory named Service.

  What can you determine from this directory's name?

  A. It is where the API response cache is stored

  B. It is where API-related configuration resides

  C. It is where the module's service contracts are stored

  D. You need to review the files in this folder to understand its purpose

  Correct Answer: D

• Question 114:

  You want to remove a column introduced by a third-party extension via declarative schema.

  How do you do that?

  A. Create the etc/db_schema.xml file and specify disable="true" on the column

  B. Modify the original etc/db_schema.xml file and remove the column from there

  C. Create a SchemaPatch file and remove the column programmatically

  D. Copy the etc/db_schema.xml file into your module and remove the column from your copy

  Correct Answer: D

• Question 115:

  You need to find all orders in the processing state. You have written the code:

  

  How do you resolve the exception?

  A. Use dependency injection to load an instance of the SearchCriteria class

  B. Change the getList parameter to: $searchCriteraBuilder->addFilter(`state','processing')- >create()

  C. Clear generated code to get a new version of SearchCriteriaBuilder

  D. Specify a preference in di.xml to map SearchCriteriaBuilder to SearchCriteriaInterface

  Correct Answer: B

• Question 116:

  How do you add a foreign key to an existing table created by another module?

  A. Create etc/db_schema.xml file with the table node and constraint child node

  B. Run the command bin/magento setup:db-schema:upgrade [table]

  C. This can only be done with raw SQL in a Schema Patch file

  D. Create the etc/db_constraints.xml file and specify foreign key there in the constraint node

  Correct Answer: A

  Explanation: https://magento.stackexchange.com/questions/192317/magento-2-how-to- add-foreign-keyin-update-schema

• Question 117:

  A third-party module uses a layout update that changes the template path for a core block from product/ view/addto/compare.phtml of the Magento_Catalog module to custom/view/addto/compare.phtml of your custom module. The merchant has a customized version of this template in their custom theme.

  What is a consequence of this setup?

  A. If the custom module is removed, the custom template will no longer apply

  B. This setup will throw an IllegalStateException

  C. If a preference for the core block is set, the template will no longer apply

  D. If another module is installed which also customizes the same core template, the templates will be rendered sequentially

  Correct Answer: A

• Question 118:

  You see this code in etc/adminhtml/routes.xml:

  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?

  A. mymodule_index_subscribe.xml

  B. mymodule_subscribe_[ACTION NAME].xml

  C. user_subscriptions_index_subscribe.xml

  D. user_subscriptions_subscribe_[ACTION NAME].xml

  Correct Answer: A

• Question 119:

  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 ();?

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

  B. /Manufacturer/Block/Index.php

  C. /Manufacturer/Controller/Index/Index.php

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

  Correct Answer: A

• Question 120:

  The constructor function for \Magento\Catalog\Model\Category contains this excerpt: With the automatic dependency injection that Magento provides, how is the StoreManagerInterface resolved?

  

  A. If no $storeManager is provided, Magento's code generator creates a shell concrete class based on \Magento\Store\Model\StoreManagerInterface

  B. Magento finds all classes that implement \Magento\Store\Model\StoreManagerInterface (ordered alphabetically) and injects the first class.

  C. Magento looks to the di.xml files in the entire system for a preference node for \Magento\Store\Model \StoreManagerInterface. This class is constructed and injected

  D. Magento throws an exception because you cannot instantiate an interface

  Correct Answer: C

  Explanation: https://devdocs.magento.com/guides/v2.4/extension-dev-guide/depend- inj.html