20+ Knight FinTech Interview Questions and Answers

Linq expression to fetch desired results

• Use 'Where' to filter data based on conditions

• Use 'Select' to project data into desired format

• Use 'OrderBy' or 'OrderByDescending' to sort data

• Use 'Skip' and 'Take' to implement pagination

To configure Entity Framework to connect with a database, follow these steps:

• Install Entity Framework package using NuGet

• Create a DbContext class that inherits from DbContext

• Add a connection string to the app.config or web.config file

• Use the DbContext to query the database

Questions related to software testing and automation

• Defect tracking and documentation throughout SDLC and STLC

• Handling browser certificate errors in Selenium automation

• Challenges in Appium testing

• Annotations and parameterizing in TestNG

• Handling dynamic elements in testing

Design patterns are reusable solutions to common software problems.

• Design patterns help in creating maintainable and scalable code.

• Some commonly used design patterns are Singleton, Factory, Observer, and Decorator.

• Singleton pattern ensures that only one instance of a class is created.

• Factory pattern provides an interface for creating objects in a superclass, but allows subclasses to alter the type of objects that will be created.

• Observer pattern allows objects to be notified ...read more

Designing resilient, fault tolerant microservices involves using redundancy, monitoring, and graceful degradation.

• Implement redundancy by having multiple instances of each microservice running in different availability zones.

• Use circuit breakers to prevent cascading failures by temporarily stopping requests to a failing service.

• Monitor the health of microservices and automatically scale resources up or down based on demand.

• Implement graceful degradation by providing fallback ...read more

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

• S - Single Responsibility Principle: A class should have only one reason to change.

• O - Open/Closed Principle: Software entities should be open for extension but closed for modification.

• L - Liskov Substitution Principle: Subtypes should be substitutable for their base types.

• I - Interface Segregation Principle: Clients should not be forced to depend on interfaces they do not use....read more

Webpack is a module bundler for JavaScript applications.

• Webpack takes modules with dependencies and generates static assets representing those modules.

• It can handle various file types such as JavaScript, CSS, and images.

• Webpack allows for code splitting, lazy loading, and hot module replacement.

• Plugins can be used to extend its functionality.

• Commonly used with frameworks like React and Angular.

Messaging systems help in decoupling components, improving scalability, reliability, and enabling asynchronous communication.

• Decouples components, allowing them to communicate without knowing the details of each other

• Improves scalability by handling large volumes of messages efficiently

• Enhances reliability by providing features like message persistence and delivery guarantees

• Enables asynchronous communication, allowing systems to continue processing without waiting for immedi...read more

Ensure data consistency in microservices by using distributed transactions, event sourcing, and eventual consistency.

• Use distributed transactions to ensure all changes to multiple databases are either committed or rolled back together.

• Implement event sourcing to store all changes as a sequence of events, allowing for easy replay and consistency across services.

• Leverage eventual consistency by designing services to handle inconsistencies gracefully and resolve conflicts asynch...read more

CRM treatments include software implementation, training, customization, and ongoing support.

• Software implementation to set up the CRM system

• Training for employees to effectively use the CRM software

• Customization to tailor the CRM system to the specific needs of the business

• Ongoing support to troubleshoot issues and optimize system performance

The question is unclear and requires clarification on what 'percentage' is referring to.

• Ask for clarification on what 'percentage' is referring to in order to provide an accurate answer.

• Provide examples of different types of percentages such as completion percentage, success rate percentage, etc.

To print a substring of a given string, you can use string slicing in programming languages like Python.

• Use string slicing to extract the desired substring from the given string.

• Specify the start and end index of the substring within square brackets after the string variable.

• Example: If the given string is 'Hello World', to print 'World', use string_variable[6:].

Yes, I have experience troubleshooting complex problems in manufacturing.

• I have successfully identified and resolved issues with production equipment, such as CNC machines and robotics.

• I have analyzed data and conducted root cause analysis to determine the source of problems.

• I have collaborated with cross-functional teams to implement solutions and prevent future issues.

• I have experience with troubleshooting software and hardware integration in manufacturing processes.

Abstract class can have both abstract and non-abstract methods, while Interface can only have abstract methods.

• Abstract class can have constructors, fields, and methods, while Interface cannot have any of these.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Abstract classes are used to define a common behavior for subclasses, while Interfaces are used to define a contract for classes to implement.

• Example: Abstract class - Animal with ab...read more

Multi threading in WPF can be achieved using the Task Parallel Library (TPL) or BackgroundWorker class.

• Use Task.Run() method to run code on a separate thread.

• Use async/await keywords to perform asynchronous operations.

• Use BackgroundWorker class for simpler multi-threading scenarios.

Heart in CRM refers to the core of customer relationships and interactions.

• Heart represents the central focus of CRM, which is building and maintaining strong relationships with customers.

• It involves understanding customer needs, preferences, and behaviors to tailor interactions and offerings.

• Heart also symbolizes the emotional connection and loyalty that companies aim to cultivate with customers.

• Examples: Sending personalized emails, offering exclusive deals based on custome...read more

The line 'public static void main()' is a method signature in Java used to define the entry point of a Java program.

• public: Access modifier indicating that the method is accessible from outside the class.

• static: Keyword indicating that the method belongs to the class itself, not an instance of the class.

• void: Return type of the method, indicating that it does not return any value.

• main(): Name of the method, which serves as the entry point for the Java program.

Strategic initiatives for business development

• Conduct market research to identify potential growth areas

• Develop and implement a comprehensive marketing strategy

• Establish partnerships and collaborations with other businesses

• Invest in technology and innovation to improve efficiency and competitiveness

• Expand product or service offerings to meet changing customer needs

• Focus on customer satisfaction and retention through excellent service

• Develop and retain a talented and motivated...read more

Docker provides lightweight, portable, and scalable containerization for software applications.

• Isolation: Docker containers isolate applications and their dependencies, ensuring they run consistently across different environments.

• Efficiency: Docker allows for faster deployment and scaling of applications, reducing the time and resources needed for development and operations.

• Portability: Docker containers can be easily moved between different environments, making it easier to ...read more

UI automation scripts are programs that simulate user interactions with a software application's graphical user interface.

• UI automation scripts are used to test the functionality and performance of software applications.

• They can be written in various programming languages such as Java, Python, and C#.

• UI automation scripts can simulate user actions such as clicking buttons, entering text, and navigating menus.

• They can also be used to verify that the application's user interfac...read more

OOPs concepts are the fundamental principles of Object-Oriented Programming.

• Encapsulation: Binding data and functions that manipulate the data together.

• Inheritance: Acquiring properties and behavior of a parent class by a child class.

• Polymorphism: Ability of an object to take many forms.

• Abstraction: Hiding implementation details and showing only functionality.

We primarily use the Agile framework for product development.

• Agile framework is used for its flexibility and ability to adapt to changing requirements

• Scrum is a popular Agile framework that we follow for sprint planning and execution

• Kanban is another Agile framework we use for visualizing work and workflow management

Product explanation involves providing a detailed overview of the features, benefits, and functionality of a specific product.

• Highlight key features and benefits of the product

• Explain how the product solves a problem or meets a need

• Provide examples of how the product is used in real-world scenarios