Magento2 basic interview questions and answers.

The Differences Between Magento 1 and Magento 2
Magento1 :
API Added Retroactively
Flexible Architecture
No Front-end Library
Legacy PHP
No Support for HTML5/CSS3
Weak Content Staging
Full Page Cache (EE)
JS – Prototype
Legacy Checkout
Magento2 :
API is Core to the technology
New Architecture for Speed
Ships with LESS
PHP5.6+ / 7.0
Native Support HTML5/CSS3
Advanced Content Staging
FPC (EE)/Varnish
JS – Jquery
Streamlined Checkout Process
Which command is used to enable or disable a magento2 module ?
php bin/magento module:enable NameSpace_ModuleName
php bin/magento module:disable NameSpace_ModuleName
Which files are necessary to install – upgrade database tables and to records in it?
Normally, there are four files for this listed below
1.InstallSchema
2.UpgradeSchema
3.InstallData
4.UpgradeData
What are the recommended steps to be followed before Magento2 programming?
Before development starts, disable whole cache.
Set Development mode as SetEnv MAGE_MODE developer in .htacces or run the command php
bin/magento deploy:mode:set developer
Which file is responsible for keeping database credentials in Magento2?
env.php situated at app/etc/ folder
Which file stores the vendor path?
Its vendor_path.php situated at app/etc/ folder.
Which class Magento 2 helper extend?
\Magento\Framework\App\Helper\AbstractHelper
Which function refers the action in any controller file?
Its execute() function
What is the difference between cache:clean and cache:flush?
Typically, cache:clean deletes all enabled cache related to magento whereas cache:flush deletes the whole cache storage, whether its magento cache or any third party cache (whether enabled or disabled)
What is resource attribute for admin menu item?
resource attribute defines the ACL rule, that a user must have in order to access this Menu Item
Where does all core modules are located in Magento2?
They are under vendor/magento folder.
Where are the module’s base definition file?
They are at app/code/Module/etc/module.xml.

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