10+ Columbus Global Interview Questions and Answers

The attribute that connects the step definition and Feature file is the step definition annotation.

• Step definition annotation is used to map the steps in the feature file to the corresponding code in the step definition file.

• It acts as a bridge between the feature file and the step definition file.

• The step definition annotation is typically written using regular expressions to match the steps in the feature file.

• By using the step definition annotation, the test framework know...read more

To close the 3rd window out of 10 windows, identify the window and use the appropriate method to close it.

• Identify the window that needs to be closed

• Use the appropriate method or function to close the window

• Ensure that the correct window is closed by verifying the window count

To find elements of a grid, iterate through each row and column and store the elements in an array of strings.

• Iterate through each row and column of the grid

• Store the elements in an array of strings

• Example: grid = [['A', 'B', 'C'], ['D', 'E', 'F']]

• Resulting array: ['A', 'B', 'C', 'D', 'E', 'F']

A Required Traceability matrix is a document that maps the requirements to the test cases and ensures complete test coverage.

• It is used to track the relationship between requirements and test cases.

• It helps in ensuring that all requirements have been tested.

• It provides a clear understanding of the test coverage and helps in identifying any gaps.

• It is typically created during the test planning phase and updated throughout the testing process.

• It can be in the form of a table or...read more

Microservices communicate through lightweight protocols like HTTP/REST, messaging queues, gRPC, and event-driven architecture.

• Use HTTP/REST for synchronous communication between services

• Implement messaging queues like RabbitMQ or Kafka for asynchronous communication

• Leverage gRPC for high-performance, low-latency communication

• Adopt event-driven architecture with tools like Apache Kafka for real-time data processing

Microservices are a software architecture design where applications are broken down into smaller, independently deployable services.

• Microservices are small, independent services that work together to form a complete application

• Each microservice is responsible for a specific function or feature

• Microservices communicate with each other through APIs

• They can be developed, deployed, and scaled independently

• Examples of companies using microservices include Netflix, Amazon, and Uber

Extensive experience in back end development with a strong focus on unit test coverage.

• Developed back end systems using languages like Java, Python, or Node.js

• Implemented unit tests using frameworks like JUnit, pytest, or Mocha

• Achieved high code coverage to ensure quality and reliability of the software

• Used mock objects and stubs to isolate unit tests and improve testability

I have worked on various projects involving web development, mobile app development, and data analysis.

• Developed a web application using React.js and Node.js for real-time data visualization

• Created a mobile app using Swift for iOS platform to track fitness activities

• Implemented data analysis algorithms in Python to optimize business processes

OOPS concepts are fundamental principles in object-oriented programming that help in organizing and designing code efficiently.

• Encapsulation: Bundling data and methods that operate on the data into a single unit (class). Example: Class Car with properties like make, model, and methods like start(), stop().

• Inheritance: Ability of a class to inherit properties and behavior from another class. Example: Class SUV inheriting from Class Car.

• Polymorphism: Ability to present the same...read more

I handle daily account management tasks such as processing payments, resolving billing issues, and updating customer information.

• Process payments from customers

• Resolve billing discrepancies

• Update customer information in database