Ratnakar Canning Industries Interview Questions and Answers

OOP stands for Object-Oriented Programming, a programming paradigm based on the concept of objects.

• OOP focuses on creating objects that contain both data and methods to manipulate that data.

• Encapsulation, inheritance, and polymorphism are key principles of OOP.

• Example: In a library management system, you could have objects like Book, Patron, and Library.

• Example: Inheritance allows a FictionBook class to inherit properties from a Book class.

Performance testing ensures software meets speed, stability, and scalability requirements.

• Performance testing identifies bottlenecks and measures response time, throughput, and resource utilization.

• It helps optimize system performance, improve user experience, and prevent crashes under high load.

• Examples include load testing, stress testing, and endurance testing.

• Performance testing should be conducted throughout the software development life cycle.

• It is important to use real...read more

Use a SQL query with ORDER BY and LIMIT to find the 2nd last student marks.

• Use ORDER BY clause to sort the marks in descending order

• Use LIMIT 1,1 to skip the last row and fetch the 2nd last row

My expected CTC is in line with industry standards and commensurate with my experience and skills.

• Research industry standards and salary ranges for the position and location

• Consider my experience, skills, and qualifications

• Negotiate based on the company's compensation package and benefits

• Provide a range rather than a specific number

Out is used for returning multiple values from a method, while ref is used for passing a variable by reference.

• Out parameters must be assigned a value inside the method before it returns.

• Ref parameters must be initialized before passing them to a method.

• Out parameters are used when a method needs to return multiple values.

• Ref parameters are used when a method needs to modify the value of the parameter.

• Example: int.TryParse(stringValue, out int result) - result is assigned a v...read more