10+ Lumen Technologies Interview Questions and Answers

MVVM separates the view and model using a ViewModel, while MVC separates the view and model using a controller.

• In MVVM, the ViewModel acts as an intermediary between the view and model, handling user interactions and updating the model accordingly.

• In MVC, the controller is responsible for handling user input, updating the model, and updating the view.

• MVVM allows for better separation of concerns and easier unit testing of the ViewModel.

• MVC can lead to tighter coupling between...read more

SOLID principles are a set of five design principles that help developers create more maintainable and scalable code.

• Single Responsibility Principle (SRP) - A class should have only one reason to change.

• Open/Closed Principle (OCP) - Classes should be open for extension but closed for modification.

• Liskov Substitution Principle (LSP) - Objects of a superclass should be replaceable with objects of its subclasses without affecting the program's correctness.

• Interface Segregation P...read more

When a table is created in Oracle, three segments are created: data segment, index segment, and temporary segment.

• Data segment stores the actual data of the table

• Index segment stores the indexes created on the table

• Temporary segment is created for temporary data storage during sorting or joining operations

Yes, having knowledge of is-retail is an added advantage for SAP MM Consultant.

• Is-retail knowledge can help in understanding the specific requirements of retail businesses.

• It can aid in configuring and customizing SAP MM to meet the needs of retail clients.

• It can also help in integrating SAP MM with other retail-specific systems.

• Having is-retail knowledge can make the consultant more marketable and increase job opportunities.

Yes, I have worked on HTML extensively in various projects.

• Developed responsive web pages using HTML5 and CSS3

• Implemented forms, tables, and multimedia content with HTML

• Utilized semantic elements for better SEO and accessibility

• Integrated JavaScript for dynamic client-side interactions

Java is a high-level, object-oriented programming language used to develop applications for a variety of platforms.

• Java is platform-independent, meaning it can run on any operating system

• It is known for its security features, such as the Java Security Manager

• Java is used to develop a wide range of applications, from mobile apps to enterprise-level systems

• It is based on the concept of Write Once, Run Anywhere (WORA)

• Java code is compiled into bytecode, which can then be execute...read more

I analyze the problem, brainstorm potential solutions, consult with team members, and test different approaches until finding the most effective solution.

• Analyze the problem thoroughly to understand its root cause

• Brainstorm potential solutions with team members

• Consult with subject matter experts if needed

• Test different approaches to see which one works best

• Implement the most effective solution and monitor its impact

Developed a web-based inventory management system for a retail company

• Used PHP and MySQL for backend development

• Implemented barcode scanning feature for easy product tracking

• Designed a user-friendly interface for easy navigation

• Integrated with payment gateway for online transactions

• Conducted user testing and made necessary improvements based on feedback

A palindrome code in C# checks if a given string reads the same forwards and backwards.

• Create a function that takes a string as input

• Use a loop to compare characters from the start and end of the string

• Return true if all characters match, false otherwise

Asynchronous Apex allows you to run processes in the background without user interaction.

• Asynchronous Apex is used for long-running processes that don't require immediate user interaction.

• It is commonly used for batch processing, future methods, and scheduled jobs.

• Asynchronous Apex helps in improving performance by offloading processing to the background.

• Examples include sending email notifications, updating records in bulk, and integrating with external systems asynchronousl...read more