Question 1

Which three of the following object types will have a parent class found in the Mage_Eav module for the purposes of EAV data storage in Magento? (Choose three)

Accepted Answer

Resource models, resource collections, and setup classes all have a parent class found in the Mage_Eav module for the purposes of EAV data storage in Magento.

Question 2

You want to display a grid for a custom collection. After extending Mage_Adminhtml_Block_widget_Grid, which two of these methods should you implement? (Choose two)

Accepted Answer

The answer of You want to display a grid for...

Question 3

Which two public methods must be implemented in a functional custom shipping method directly extending Mage_Shipping_Model_Carrier_Abstract and also implementing Mage_Shipping_Model_Carrier_Interface? (Choose two)

Accepted Answer

The methods `collectRates()` and `getAllowedMethods()` are required by the `Mage_Shipping_Model_Carrier_Interface` to define how shipping rates are collected and what methods are available.

Question 4

Which one of the following declares a Layout XML file?

Accepted Answer

The answer of Which one of the following declares a...

Question 5

Which of the following xpaths defines the correct XML structure for informing Magento that your module has install scripts?

Accepted Answer

In Magento, the correct XML structure to inform the system about module install scripts is defined under the "global/resources" node, followed by the script directory name, and then "setup/module".

Question 6

When changes are made to more than one of a collection's items using setData ('some', 'value'), which of the following methods will save the changes in the collection?

Accepted Answer

The answer of When changes are made to more than...

Question 7

You have used the "refresh"' action on the cache management page for the block html cache type. Which of the following types of cache record would be cleared?

Accepted Answer

The "refresh" action for block HTML cache clears items that have tags specified in the configuration under the xpath global/cache/types/block_html/tags.

Question 8

The initial call to ______________ will create and return an instance of the specified class. Subsequent calls to this method during the same execution cycle will return the same class instance as opposed to creating a new one.

Accepted Answer

Mage::getSingleton('modulename/modelname') creates and returns an instance of the specified class on the first call and returns the same instance on subsequent calls during the same execution cycle.

Question 9

To implement a standard Adminhtml form for a custom data model, which two of the following must you do? (Choose two)

Accepted Answer

To implement a standard Adminhtml form, you need to declare the module's block class prefix in the config.xml file and implement a subclass of Mage_Adminhtml_Block_Widget_Form to define the form structure.

Question 10

How can you update a third-party system with every new order created in Magento?

Accepted Answer

Creating an observer in Magento on the sales_order_place_after event allows you to execute custom code whenever a new order is placed, which can be used to update a third-party system.

Question 11

Which two EAV attribute frontend_input types make use of source models? (Choose two)

Accepted Answer

The 'select' and 'multiselect' frontend_input types use source models to provide options for selection.

Question 12

Given a grid interface that extends from Mage_Adminhtml_Block_widget_Grid, which of the following methods could you override to allow data to be loaded from a custom data collection?

Accepted Answer

The _prepareCollection method is used to set the data collection for the grid, allowing you to load data from a custom data collection.

Question 13

What does Magento use to determine whether the automatically run upgrade scripts have been run yet?

Accepted Answer

Magento uses the version number stored in the core_resource table to determine if upgrade scripts have been executed. This table keeps track of the version of each module's database schema.

Question 14

Which of the following layout XML directives will set a value on a block?

Accepted Answer

The answer of Which of the following layout XML directives...

Question 15

Which of the following methods will force an EAV resource collection model to include an attribute in its result set?

Accepted Answer

The method `addAttributeToSelect($attribute);` is used in EAV resource collections to specify which attributes should be included in the result set.

Question 16

You want to filter a product collection so that it will return only SKUs 12 and 123. You will use a call to $collection->addFieldToFilter ('sku', ____________ ); Two of the following arrays could be used to complete that call correctly. Which two? (Choose two)

Accepted Answer

The answer of You want to filter a product collection...

Question 17

How can you make a payment method store entire credit card numbers?

Accepted Answer

The answer of How can you make a payment method...

Question 18

What is the basic class/interface for every model observer class?

Accepted Answer

The answer of What is the basic class/interface for every...

Question 19

When the Magento configuration is being loaded, all the XML files in app/etc and the module registration files under app/etc/modules/ are loaded first. After that step, in which order are the following items loaded? 1. Configuration from the core_config_data DB table 2. app/etc/local.xml 3. The etc/config.xml of all active modules

Accepted Answer

The correct order is: The etc/config.xml of all active modules (3) is loaded first, followed by app/etc/local.xml (2), and finally the configuration from the core_config_data DB table (1).

Question 20

You want to implement a custom attribute source model. Which method do you have to implement after extending Mage_Eav_Model_Entity_Attribute_Source_Abstract?

Accepted Answer

To implement a custom attribute source model, you need to implement the getAllOptions() method, which provides the list of options for the attribute.

Exam 1: Magento Certified Developer