IDrive Interview Questions and Answers

Method overloading is having multiple methods in the same class with the same name but different parameters, while method overriding is redefining a method in a subclass with the same name and parameters as in the superclass.

• Method overloading involves multiple methods with the same name but different parameters.

• Method overriding involves redefining a method in a subclass with the same name and parameters as in th...read more

Autowired annotation is used in Spring framework for dependency injection, while new keyword is used for manual object creation.

• Autowired annotation is used for dependency injection in Spring framework, allowing objects to be automatically wired together without manual instantiation.

• Using new keyword for object creation leads to tight coupling and makes the code harder to maintain and test.

• Autowired annotation pro...read more

An SQL INNER JOIN combines rows from two or more tables based on a related column.

• INNER JOIN returns only matching rows from both tables.

• Example: SELECT * FROM Employees INNER JOIN Departments ON Employees.DeptID = Departments.ID;

• Use INNER JOIN when you need data that exists in both tables.

• Multiple INNER JOINs can be used to combine more than two tables.

PST file is used for Outlook data storage while OST file is an offline copy of Exchange mailbox.

• PST file is a personal storage table used by Outlook to store emails, contacts, calendar items, etc.

• OST file is an offline storage table created by Outlook when connected to Exchange server for offline access.

• PST files can be easily imported and exported, while OST files are tied to the specific Exchange account.

• PST fil...read more

Testing is the process of evaluating a system or application to identify defects or errors.

• Testing involves executing a system or application to verify that it meets specified requirements.

• Types of testing include functional testing, performance testing, security testing, etc.

• Testing helps ensure the quality and reliability of the software.

• Examples of testing tools include Selenium, JUnit, and LoadRunner.

Agile methodology is a project management approach that emphasizes flexibility, collaboration, and incremental progress.

• Agile focuses on delivering working software in short, iterative cycles called sprints.

• It values customer collaboration, responding to change, and continuous improvement.

• Key principles include individuals and interactions over processes and tools, working software over comprehensive documentation...read more