30+ RankUno Interactive Technologies Interview Questions and Answers

Boundary value is a testing technique where test cases are designed around the boundaries of input ranges.

• Boundary value testing involves testing the minimum, maximum, and just beyond the boundaries of valid input ranges.

• It helps in identifying errors that occur at the boundaries of input values.

• For example, if a program accepts values from 1 to 10, boundary value testing would include test cases for 0, 1, 10, and 11.

The entry point for dotnet core applications is the Main method in the Program class.

• The Main method serves as the entry point for dotnet core applications.

• It is typically located in the Program class.

• The Main method is where the application starts its execution.

Alerts in Cypress can be handled using cy.on() method and event listeners.

• Use cy.on() method to listen to the 'window:alert' event

• Pass a callback function to handle the alert message

• Use cy.stub() method to stub the window.alert() method

• Check if the alert was called with the expected message using cy.get('@stub').should('have.been.calledWith', 'expected message')

Java collection framework provides interfaces and classes to store, manipulate, and retrieve collections of objects.

• Interfaces: List, Set, Map, Queue, Deque

• Classes: ArrayList, LinkedList, HashSet, HashMap, PriorityQueue

• Example: List interface is implemented by classes like ArrayList and LinkedList

Manageable codes in dot net are codes that are easy to understand, maintain, and debug.

• Well-structured and organized code

• Proper commenting and documentation

• Consistent naming conventions

• Modular design with reusable components

• Avoiding complex nested logic

• Using design patterns for better code architecture

Popups in Cypress can be handled using cy.window() and cy.stub() commands.

• Use cy.window() command to access the window object and its properties.

• Use cy.stub() command to stub the window.alert() and window.confirm() methods.

• Use cy.on() command to listen for events and handle popups accordingly.

• Use cy.get() command to select and interact with popup elements.

SQL query to find the maximum mark of maths subject in a student table.

• Use the MAX() function to find the maximum mark in the maths subject column.

• Specify the maths subject column in the query.

• Include the student table name in the query.

Authorization in ASP.NET Core web API can be implemented using various methods such as JWT, OAuth, and Identity.

• Use JWT (JSON Web Tokens) for token-based authentication and authorization.

• Implement OAuth for third-party authentication and authorization.

• Utilize ASP.NET Core Identity for role-based authorization.

• Configure authentication and authorization middleware in the ASP.NET Core pipeline.

• Use attributes like [Authorize] to restrict access to specific endpoints.

Print duplicate character occurrences in a string.

• Iterate through the string and store character counts in a HashMap.

• Print characters with count greater than 1 to find duplicates.

Incomplete data from the client can lead to inaccurate analysis and conclusions.

• Missing data can result in biased models and inaccurate predictions.

• Imputation techniques can be used to fill in missing values, but this can introduce errors.

• Communication with the client to obtain the missing data is crucial for accurate analysis.

• Consider the impact of missing data on the overall project timeline and budget.

• Example: Missing demographic information in a customer dataset can skew ...read more

Sessions can be implemented using cookies or server-side storage to store user data and maintain state between requests.

• Use cookies to store a session ID on the client side

• Store session data on the server side using a database or in-memory storage

• Use session tokens to authenticate and authorize users during their session

SQL query to generate report of employees grouped by department with count

• Use JOIN to combine employee and department tables

• Group by department to get count of employees in each department

• Select department name and count of employees

Count the occurrence of each character in a given string.

• Create a map to store character counts

• Iterate through the string and update the counts in the map

• Print the character counts from the map

Use nested loops to compare each pair of elements and print the differences.

• Use nested loops to compare each pair of elements in the array.

• Calculate the absolute difference between each pair of elements.

• Print the differences between the array elements.

Count duplicate elements in a list of strings.

• Create a HashMap to store the count of each element in the list.

• Iterate through the list and update the count in the HashMap.

• Finally, iterate through the HashMap and print the count of elements with count greater than 1.

Create a React component to display array items in an HTML table

• Create a functional component in React

• Map through the array of strings to generate table rows

• Use JSX to structure the table with appropriate tags

OOPs concepts are the principles of Object-Oriented Programming that focus on objects, classes, inheritance, encapsulation, and polymorphism.

• Objects: Instances of classes that encapsulate data and behavior

• Classes: Blueprint for creating objects with attributes and methods

• Inheritance: Ability for a class to inherit properties and behavior from another class

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

• Polymorphism: Ability for objects of di...read more

Types of SQL joins include inner join, left join, right join, and full outer join.

• Inner join: Returns rows when there is a match in both tables

• Left join: Returns all rows from the left table and the matched rows from the right table

• Right join: Returns all rows from the right table and the matched rows from the left table

• Full outer join: Returns rows when there is a match in either table

FRD stands for Functional Requirements Document and SRS stands for Software Requirements Specification.

• FRD is a document that describes the functional requirements of a system or software.

• SRS is a document that specifies the software requirements for a system or software.

• FRD focuses on what the system should do from a functional perspective.

• SRS provides detailed information on how the software should behave and interact with users.

• FRD is typically created by business analysts...read more

MVC pattern in Spring Boot is a design pattern that separates an application into three main components: Model, View, and Controller.

• Model represents the data and business logic of the application

• View is responsible for rendering the user interface

• Controller handles user input and updates the model accordingly

• Spring Boot provides support for implementing MVC pattern through annotations like @Controller, @RequestMapping, and @ModelAttribute

Dependency injection is a design pattern where components are given their dependencies rather than creating them internally.

• Allows for easier testing by mocking dependencies

• Promotes loose coupling between components

• Improves code reusability and maintainability

• Example: Constructor injection, Setter injection

Rendering variant refers to different ways in which a software application can display content or user interface elements.

• Rendering variant can include different layouts, themes, colors, fonts, and styles for displaying content.

• It allows users to customize the appearance of the application to suit their preferences.

• For example, a website may offer a light and dark mode as rendering variants for users to choose from.

EDI stands for Electronic Data Interchange. It is the electronic exchange of business documents between trading partners.

• EDI enables the transfer of structured data between different computer systems.

• It replaces the need for paper-based documents and manual data entry.

• EDI standards define the format and structure of the exchanged data.

• Common types of EDI include EDIFACT, ANSI X12, and XML.

• EDI can be used for various business processes such as purchase orders, invoices, and sh...read more

A framework is a set of rules, guidelines, and standards that provide a structure for developing software applications.

• A framework provides a foundation for building software applications

• It includes pre-written code and libraries that can be reused

• Frameworks can be specific to a programming language or platform

• Examples include React for web development and TensorFlow for machine learning

Singleton class ensures only one instance of the class is created.

• Create a private static instance of the class

• Private constructor to prevent instantiation

• Public static method to return the instance

OOPS concepts include inheritance, encapsulation, polymorphism, and abstraction.

• Inheritance: Allows a class to inherit properties and behavior from another class. Example: class Dog extends Animal.

• Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: private variables in a class.

• Polymorphism: Ability to present the same interface for different data types. Example: method overloading or overriding.

• Abstraction: Hiding the complex impleme...read more

SLA of incidents p1, p2, p3, p4 varies based on severity and impact.

• SLA for p1 incidents is typically shorter as they are critical and require immediate attention.

• SLA for p2 incidents is longer than p1 but still requires prompt resolution.

• SLA for p3 incidents is moderate as they are less critical and can be resolved within a reasonable timeframe.

• SLA for p4 incidents is the longest as they are minor issues with low impact on operations.

LSP is a principle of SOLID design that states that objects of a superclass should be replaceable with objects of its subclasses.

• LSP stands for Liskov Substitution Principle

• It ensures that the behavior of the program remains consistent when a subclass is used in place of its superclass

• Violating LSP can lead to unexpected behavior and bugs

• Example: If a program expects a Bird object, it should be able to use any subclass of Bird (e.g. Eagle, Penguin) without issues

OSPF LSA Types range from 1 to 7, each serving a specific purpose in the OSPF routing protocol.

• LSA Type 1: Router LSA - Describes the state and cost of router interfaces.

• LSA Type 2: Network LSA - Represents multi-access networks and the routers connected to them.

• LSA Type 3: Summary LSA - Summarizes routes from one area to another.

• LSA Type 4: ASBR Summary LSA - Advertises ASBRs to other areas.

• LSA Type 5: External LSA - Advertises routes redistributed into OSPF from external so...read more

IPSEC is a protocol suite used to secure internet protocol (IP) communications by authenticating and encrypting each IP packet in a data stream.

• IPSEC operates at the network layer of the OSI model

• It provides security services such as encryption, authentication, and key management

• IPSEC can be implemented in two modes: Transport mode and Tunnel mode

• Examples of IPSEC implementations include VPNs and secure communication between network devices

The project is a web-based inventory management system for a retail company.

• Allows users to track inventory levels, sales, and orders in real-time

• Generates reports on sales trends, popular products, and inventory turnover

• Integrates with barcode scanners and POS systems for efficient data entry

SVM is a supervised machine learning algorithm used for classification and regression tasks.

• SVM finds the hyperplane that best separates different classes in the feature space

• It works well for high-dimensional data and is effective in cases where the number of dimensions is greater than the number of samples

• SVM uses kernel functions to transform the input data into higher dimensions for better separation

• It can handle both linear and non-linear data by using different types of...read more

IAM stands for Identity and Access Management. It is a framework of policies and technologies that ensure the right individuals have the right access to resources.

• IAM helps organizations manage user identities and their access to various systems and applications.

• It enhances security by controlling user access based on roles and responsibilities.

• IAM centralizes user management, making it easier to grant or revoke access as needed.

• It improves compliance with regulations and sta...read more

Joiner mover leaver process refers to the process of onboarding new employees, transferring existing employees, and offboarding employees who are leaving the organization.

• Onboarding new employees involves setting up their accounts, providing training, and introducing them to the team.

• Transferring existing employees may involve updating their roles, responsibilities, and access permissions.

• Offboarding employees includes revoking access, collecting company assets, and conductin...read more