10+ Credera Interview Questions and Answers

Explanation of concepts with real-life examples

• Abstraction: Using a TV remote without knowing the internal circuitry

• Encapsulation: A car driver only needs to know how to drive, not how the engine works

• Inheritance: A child inheriting traits from their parents

• Polymorphism: A shape can take on different forms, such as a square or a triangle

The question is too broad to provide a specific answer.

• APIs can have various methods such as GET, POST, PUT, DELETE, etc.

• The methods in an API depend on the specific API being referred to.

• Examples of API methods include 'getUser', 'createOrder', 'updateProfile', etc.

I have faced issues with compatibility, performance, and user acceptance testing.

• Compatibility issues with different browsers and operating systems

• Performance issues with large datasets and high traffic

• User acceptance testing revealed unexpected user behavior

System testing is the process of testing the complete and integrated software system to evaluate its compliance with specified requirements.

• System testing is performed on the entire software system as a whole.

• It is conducted after integration testing and before acceptance testing.

• The main goal of system testing is to ensure that the software meets the specified requirements and functions correctly in the intended environment.

• Examples of system testing include performance test...read more

SOLID principles are a set of five design principles for writing maintainable and scalable software.

• S - Single Responsibility Principle

• O - Open/Closed Principle

• L - Liskov Substitution Principle

• I - Interface Segregation Principle

• D - Dependency Inversion Principle

Sync is blocking, while Async is non-blocking.

• Sync operations block the execution of the program until the operation is completed.

• Async operations allow the program to continue executing while the operation is being completed in the background.

• Sync operations are simpler to implement and reason about, but can lead to performance issues.

• Async operations require more complex code, but can improve performance and responsiveness.

• Examples of Sync operations include reading a file ...read more

MVC Routing is a mechanism to map incoming requests to specific controller actions.

• Routing is used to define URL patterns and map them to specific actions in the controller.

• It helps to create clean and SEO-friendly URLs.

• Routing can also be used to pass parameters to the controller action.

• MVC Routing is a part of the ASP.NET framework.

• Example: RouteConfig.cs file in ASP.NET MVC application defines the routing rules.

Polymorphism is the ability of an object to take on many forms. A real-life example is a vehicle.

• Polymorphism allows a vehicle object to take on different forms such as car, truck, or motorcycle

• Each form has its own unique properties and methods, but they all share common characteristics such as having wheels and an engine

• Polymorphism allows for more efficient and flexible code as it allows for the use of a single class to represent multiple objects

I have experience with integrating various systems and technologies to streamline processes and improve efficiency.

• Implemented API integrations between CRM and marketing automation platforms

• Developed custom middleware to connect legacy systems with modern applications

• Utilized ETL tools to integrate data from multiple sources into a centralized database

The word state can refer to a condition, a political entity, or a stage in a process.

• State can refer to the condition or status of something, such as the state of a machine or the state of a person's health.

• State can also refer to a political entity, such as a nation-state or a state within a country.

• State can indicate a stage in a process, such as the state of a project or the state of an experiment.

• State can also refer to a mental or emotional condition, such as a state of ...read more

Rotate a matrix by 90 degrees clockwise

• Transpose the matrix

• Reverse each row of the transposed matrix