Magento Dependency Injection Configuration

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Questions and Answers

What is the purpose of configuring the class constructor arguments in di.xml?

  • To specify the lifestyle of a created instance
  • To inject the configured arguments into the class during creation (correct)
  • To define the abstraction-implementation mappings
  • To determine the default implementation of an interface

What type of value can be passed as an argument in the Node Format {typeName}?

  • Only string values
  • Only numeric values
  • Only class name or interface name
  • Any class name, interface name, or virtual type (correct)

What happens when the application loads a new configuration with array arguments?

  • The application throws an error
  • The new configuration replaces the loaded config (correct)
  • The application ignores the new configuration
  • The new configuration merges with the loaded config

What is the purpose of the abstraction-implementation mappings?

<p>To determine the default implementation of an interface (C)</p>
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What is the result of configuring the shared property of a created instance?

<p>The lifestyle of the created instance is defined (C)</p>
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What is the purpose of the /etc/extension_attributes.xml file?

<p>To define a module's extension attributes (C)</p>
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What happens when the system uses a join directive to add external attributes to a collection?

<p>It makes the collection filterable (B)</p>
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What is the purpose of restricting individual fields defined as extension attributes?

<p>To restrict access to data (D)</p>
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What happens when an authenticated user with the Magento_CatalogInventory::cataloginventory permission issues a GET /rest//V1/products/ request?

<p>They receive product information with the stock_item attribute (C)</p>
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What is the purpose of the stock_item attribute in the example?

<p>To add an external attribute to a collection (D)</p>
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