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Adobe Certified Professional Magento Commerce Developer Sample Questions:

1. A module you are working on needs to send a newsletter to all subscribed customers at predefined intervals.
Which two actions do you take to make sure the newsletter is sent? (Choose two.)

A) Implement \MyCompany\MyModule\Cron\NewsLetterSender::execute and register it in etc/crontab/di.xml
B) Register the plugin for \Magento\Customer\Model\Customer::authenticate in etc/crontab.xml
C) Implement \MyCompany\MyModule\Cron\NewsLetterSender::execute and register it in etc/crontab/.xml
D) Make sure bin/magento cron:run is added to the system crontab

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

When you run the code, you get the following exception:

How do you resolve the exception?

A) Clear generated code to get a new version of SearchCriteriaBuilder
B) Change the getList parameter to: $searchCriteriaBuilder->addFilter('state', 'processing')->create()
C) Specify a preference in di.xml to map SearchCriteriaBuilder to SearchCriteriaInterface
D) Use dependency injection to load an instance of the SearchCriteria class

3. You are debugging a problem resulting from a recently deployed around plugin. The plugin is intercepting the doSomething method. The aroundDoSomething plugin method is called successfully, but the original doSomething method is no longer being executed as expected.
What is causing this?

A) The sort order of the plugin is too high and supersedes the priority of the intercepted method
B) The plugin implementation is skipping the execution of its callable argument
C) The plugin implementation overlooked using the AbstractPlugin parent class
D) The plugin implementation returned something other than its callable argument

4. How can you render a text on a page using only layout xml?

A) Option A
B) Option B
C) Option D
D) Option C

5. 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) Order of listener execution cannot be guaranteed, resulting in a fragile implementation. This code should be re-worked using plugins
B) There is no risk posed as long as each event observer specifies a correct sortOrder. Nothing needs to be changed.
C) Event observers are fired in alphabetical order of the observer name. There is no risk here.
D) Magento only supports one observer per event. These observers will need to be combined into a single point of customization.

Solutions: