20+ Black Knight Interview Questions and Answers

To move from one Entity Framework version to another, update the NuGet package and make necessary code changes.

• Update the NuGet package to the desired version

• Make necessary code changes to accommodate any breaking changes

• Test thoroughly to ensure the application still works as expected

Choose .Net Core for cross-platform and cloud-based applications, .Net Framework for Windows-only applications.

• Consider the target platform and deployment environment

• Choose .Net Core for cross-platform and cloud-based applications

• Choose .Net Framework for Windows-only applications

• Check for compatibility with existing libraries and frameworks

• Consider performance and scalability requirements

Creating a RESTful service without using Asp.Net Web Api template.

• Use a lightweight framework like Flask or Express

• Define routes and HTTP methods for each endpoint

• Serialize data to JSON format

• Handle errors and exceptions

• Test the service using tools like Postman or curl

There are two types of routings in Asp.Net MVC: convention-based routing and attribute routing.

• Convention-based routing uses default routing rules to map URLs to controller actions.

• Attribute routing allows developers to define custom routes using attributes on controller actions or at the controller level.

• Both types of routing can be used together in the same application.

• Convention-based routing is the default routing mechanism in Asp.Net MVC.

• Attribute routing is more flexibl...read more

Inheritance is a mechanism in OOP where a new class is derived from an existing class.

• It allows for code reusability and promotes a hierarchical structure.

• It can lead to tight coupling and make the code harder to maintain.

• It can also result in the creation of unnecessary classes and increase complexity.

• Example: A Car class can inherit properties and methods from a Vehicle class.

• Example: A Square class can inherit properties and methods from a Shape class.

WCF is a framework for building distributed systems while Asp.Net Web Api is for building HTTP services.

• WCF supports multiple protocols like TCP, HTTP, Named Pipes, etc. while Web Api only supports HTTP.

• WCF has more configuration options and is more flexible than Web Api.

• Web Api is more lightweight and easier to use for building RESTful services.

• WCF is more suitable for building enterprise-level applications with complex requirements.

• WCF has built-in support for security, tra...read more

Performance tuning in SQL involves optimizing queries, indexes, and server settings to improve database performance.

• Identify slow queries using profiling tools

• Optimize queries by rewriting or adding indexes

• Adjust server settings such as memory allocation and disk usage

• Consider partitioning large tables

• Regularly monitor and analyze performance metrics

Dispose and finalize are methods used for releasing resources in .NET.

• Dispose is used to release unmanaged resources immediately.

• Finalize is used to release managed resources when the garbage collector runs.

• Dispose can be called manually or through the using statement.

• Finalize is called automatically by the garbage collector.

• Dispose is implemented by IDisposable interface.

• Finalize is implemented by Object class.

Routing in Asp.Net MVC maps incoming requests to appropriate controller actions.

• Routing is configured in RouteConfig.cs file.

• Routes are defined using MapRoute method.

• Routes can have placeholders for dynamic values.

• Routes can have constraints to restrict the values of placeholders.

• Routes can be named for easy reference.

• Default route is defined as {controller}/{action}/{id}.

• Attribute routing can also be used to define routes at controller or action level.

Difference between drop, truncate and delete.

• DROP command removes a table from the database

• TRUNCATE command removes all rows from a table

• DELETE command removes specific rows from a table

Testing in Agile involves continuous testing throughout the development cycle.

• Collaborate with the development team to ensure testing is integrated into each sprint

• Use automation testing tools to speed up the process

• Prioritize testing based on user stories and acceptance criteria

• Perform exploratory testing to uncover defects that may have been missed

• Ensure that testing is done in parallel with development to catch defects early

MVC pipeline is a design pattern that separates an application into three interconnected components: Model, View, and Controller.

• Model represents the data and business logic

• View displays the data to the user

• Controller handles user input and updates the model and view accordingly

• The pipeline ensures separation of concerns and promotes modularity

• Example: A user enters data in a form (input), the controller receives the input and updates the model, the view then displays the upd...read more

Startup method in .NET Core is used to configure the application's services and middleware.

• Startup method is defined in Startup.cs file.

• It includes ConfigureServices and Configure methods.

• ConfigureServices is used to add services to the dependency injection container.

• Configure is used to configure the HTTP request pipeline.

• Example: public void ConfigureServices(IServiceCollection services) { services.AddMvc(); }

• Example: public void Configure(IApplicationBuilder app, IHostingE...read more

HTTP verbs are used to indicate the type of action being performed on a resource.

• HTTP verbs include GET, POST, PUT, DELETE, PATCH, HEAD, OPTIONS

• GET is used to retrieve data from a server

• POST is used to submit data to a server

• PUT is used to update an existing resource on a server

• DELETE is used to delete a resource from a server

• PATCH is used to partially update a resource on a server

• HEAD is used to retrieve only the headers of a resource

• OPTIONS is used to retrieve the supported...read more

OOPs concepts are the principles of Object-Oriented Programming that help in designing and implementing software solutions.

• Encapsulation - binding data and functions together

• Inheritance - creating new classes from existing ones

• Polymorphism - ability of objects to take on multiple forms

• Abstraction - hiding implementation details

• Objects - instances of classes that encapsulate data and behavior

Project architecture refers to the overall design and structure of a software project.

• It includes the organization of components and modules

• Defines the relationships between them

• Specifies the technologies and tools used

• Determines the overall performance and scalability

• Examples include MVC, microservices, and client-server architecture

Interface defines only method signatures while abstract class can have method implementations.

• Interfaces can be implemented by multiple classes while abstract classes can only be extended by one class.

• Interfaces are used for achieving multiple inheritance in Java while abstract classes are used for single inheritance.

• Interfaces cannot have constructors while abstract classes can have constructors.

• An example of an interface is the Comparable interface in Java while an example ...read more

Explicit interface is a way to implement multiple interfaces with same method names.

• Explicit interface is used to avoid naming conflicts when implementing multiple interfaces.

• It is implemented by prefixing the interface name to the method name.

• It is useful when implementing COM interfaces in .NET.

• Example: void IInterface1.Method() and void IInterface2.Method()

C language is a programming language used for system programming and data is information processed or stored by a computer.

• C language is a general-purpose programming language known for its efficiency and low-level programming capabilities.

• Data refers to information that is processed or stored by a computer, such as numbers, text, images, etc.

• C language allows programmers to manipulate and work with data using variables, data types, and functions.

• Example: In C language, you c...read more

A computer is an electronic device that can perform various tasks. Software is a set of instructions that tell the computer what to do.

• A computer is made up of hardware components such as a CPU, memory, and storage devices.

• Software can be categorized into system software and application software.

• Examples of system software include operating systems like Windows and macOS.

• Examples of application software include Microsoft Office, Adobe Photoshop, and video games.

• Software is wr...read more

Answering a question on SQL coding for group by and nth highest number.

• Use GROUP BY clause to group the data based on a column

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

• Use LIMIT clause to limit the number of rows returned

• Use OFFSET clause to skip the first n rows

• Example: SELECT column_name FROM table_name GROUP BY column_name ORDER BY column_name DESC LIMIT n OFFSET m

Technical skills are essential for a data entry operator.

• Proficient in Microsoft Office Suite

• Typing speed and accuracy

• Knowledge of data entry software and tools

• Familiarity with basic computer programming

• Ability to troubleshoot technical issues

I do not have any objection to signing a 1-year bond.

• I understand that a bond is a common practice in many companies to ensure employee commitment.

• I am willing to commit to the company for at least a year.

• I would like to know more about the terms and conditions of the bond before signing it.

My strengths include attention to detail, fast typing speed, and ability to work independently. My weakness is that I can be too focused on perfection.

• Attention to detail

• Fast typing speed

• Ability to work independently

• Being too focused on perfection

A mortgage is a loan used to purchase a property, where the property itself serves as collateral for the loan.

• A mortgage is a financial agreement between a borrower and a lender.

• It allows the borrower to purchase a property by borrowing money from the lender.

• The property being purchased serves as collateral for the loan.

• The borrower makes regular payments to the lender, including both principal and interest.

• If the borrower fails to make payments, the lender has the right to f...read more

Scrum ceremonies include Sprint Planning, Daily Scrum, Sprint Review, and Sprint Retrospective. Roles include Product Owner, Scrum Master, and Development Team.

• Sprint Planning - plan the work to be done in the upcoming sprint

• Daily Scrum - daily meeting to discuss progress and plan for the day

• Sprint Review - review the work completed in the sprint and plan for the next sprint

• Sprint Retrospective - reflect on the sprint and identify areas for improvement

• Product Owner - responsi...read more