20+ Rupa Interview Questions and Answers

Code snippet to find 3rd largest salary

• Sort the salaries in descending order

• Skip duplicates while iterating through the sorted salaries

• Return the third unique salary

OOPs concepts refer to Object-Oriented Programming principles such as inheritance, encapsulation, polymorphism, and abstraction.

• Inheritance: Allows a class to inherit properties and behavior from another class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the complex implementation details and showing only the necessary features.

Types of threads include user threads and kernel threads.

• User threads are managed by user-level threads library and are created by the application.

• Kernel threads are managed by the operating system and are created and managed by the kernel.

• Examples include POSIX threads (pthread) for user threads and Windows threads for kernel threads.

Garbage Collection is an automatic memory management process that reclaims memory occupied by objects no longer in use.

• Garbage Collection identifies and frees memory that is no longer referenced by the program.

• It helps prevent memory leaks, which occur when memory is allocated but not released.

• Common algorithms include Mark-and-Sweep, Reference Counting, and Generational Collection.

• For example, in Java, the JVM automatically handles garbage collection, allowing developers to ...read more

A lambda function is an anonymous function that can have any number of parameters but can only have one expression.

• Lambda functions are used for creating small, one-time use functions without the need to define a formal function.

• Lambda functions are written using the lambda keyword followed by parameters and an expression.

• Example: lambda x: x*2 defines a lambda function that takes a parameter x and returns x multiplied by 2.

Appium is an open-source tool for automating mobile applications, with architecture supporting both Android and iOS platforms.

• Appium architecture includes client libraries, Appium server, and mobile devices/emulators.

• Appium 1x to 2x differences include improved stability, new commands, and enhanced support for iOS simulators.

• Android and iOS differences in Appium testing involve different locator strategies, capabilities, and automation frameworks.

I am a dedicated Test Engineer with a strong understanding of testing concepts and methodologies.

• I have experience in creating test plans, test cases, and executing tests to ensure software quality.

• I am proficient in using testing tools such as Selenium, JIRA, and TestRail.

• I have a solid understanding of different types of testing like functional, regression, and performance testing.

• I am skilled in identifying and reporting bugs, and working closely with developers to resolve...read more

Estimation and proposal for large deal

• Understand client requirements and scope of work

• Analyze resources required and estimate costs

• Prepare a detailed proposal with timelines and deliverables

• Present proposal to client and negotiate terms

• Ensure project team is aligned with proposal and deliverables

Power BI is a business analytics service by Microsoft that provides interactive visualizations and business intelligence capabilities.

• Power BI allows users to connect to a wide range of data sources

• Users can create custom visualizations and reports

• Power BI offers a variety of features such as data modeling, data transformation, and data analysis

• Projects in Power BI can range from simple dashboards to complex data models

• Examples of Power BI projects include sales dashboards, f...read more

Time Intelligence functions in DAX are used to analyze data over time periods.

• DAX provides functions like TOTALYTD, SAMEPERIODLASTYEAR, DATESYTD, etc.

• These functions help in calculating values for a specific time period or comparing values with the same period in the previous year.

• Time Intelligence functions are commonly used in financial and sales analysis.

• For example, TOTALYTD can be used to calculate the total sales for a year up to a specific date.

Using coding samples to predict outcomes is a common practice in software testing.

• Utilize machine learning algorithms to analyze historical data and predict future outcomes

• Implement regression analysis to identify patterns and trends in the data

• Use decision trees or neural networks to classify data and make predictions

• Evaluate the accuracy of the predictions using metrics like precision, recall, and F1 score

Mobile architecture for Android and iOS involves designing and implementing the software and hardware components of the mobile devices.

• The architecture should be scalable and flexible to accommodate future updates and changes.

• It should also prioritize security and privacy of user data.

• For Android, the architecture should follow the Model-View-Controller (MVC) pattern, while for iOS, it should follow the Model-View-ViewModel (MVVM) pattern.

• The architecture should also consider...read more

Filtering in Power BI allows users to refine data displayed in visuals and reports.

• Filters can be applied to individual visuals or to the entire report.

• Filters can be based on specific values, ranges, or conditions.

• Filters can be created using various types of visuals, such as slicers, dropdowns, or checkboxes.

• Filters can also be created using DAX expressions.

• Filters can be saved and reused in other reports or visuals.

Bookmarking in Power BI allows users to save and share specific views of their data.

• Bookmarks capture the current state of a report, including filters, slicers, and visuals.

• Users can create, edit, and delete bookmarks to save and share specific views of their data.

• Bookmarks can be used to create interactive presentations or to provide a guided experience for users.

• Bookmarks can also be used to create drill-through experiences, allowing users to navigate from a summary view to...read more

setTimeout executes a function once after a specified time, setInterval executes a function repeatedly at specified intervals, setImmediate executes a function immediately after the current event loop.

• setTimeout executes a function once after a specified delay.

• setInterval executes a function repeatedly at specified intervals.

• setImmediate executes a function immediately after the current event loop.

• Example: setTimeout(() => { console.log('Hello'); }, 1000);

• Example: setInterval...read more

IDisposable method is used to release unmanaged resources in .NET applications.

• IDisposable interface is used to release unmanaged resources like file handles, database connections, etc.

• It contains a single method Dispose() which should be implemented to release resources.

• It is recommended to use IDisposable along with using statement for proper resource management.

• Example: FileStream class in C# implements IDisposable interface to release file handles.

Angular follows a single-threaded, event-driven model for executing code.

• Angular uses Zones to manage the flow of execution and handle asynchronous tasks.

• The change detection mechanism in Angular triggers the flow of execution by checking for changes in the application state.

• Angular's dependency injection system controls the flow of execution by providing services and components when needed.

SUMX is a DAX function that returns the sum of an expression evaluated for each row in a table.

• Used to calculate the sum of a column or expression for each row in a table

• Syntax: SUMX(table, expression)

• Example: SUMX(Sales, Sales[Quantity] * Sales[Price]) returns the total sales amount

• Can be used with filters to calculate conditional sums

Interface defines a contract for classes to implement, while abstract class provides partial implementation.

• Interface can have only abstract methods, while abstract class can have both abstract and concrete methods.

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

• Interfaces are used for achieving multiple inheritance in Java.

• Abstract classes are used when some common functionality needs to be shared among multiple classes.