40+ People Tech Group Interview Questions and Answers

Infotainment system is a combination of information and entertainment features in a car.

• It includes features like audio and video playback, navigation, climate control, and connectivity options.

• Examples of infotainment systems are Apple CarPlay, Android Auto, and Ford SYNC.

• It enhances the driving experience by providing entertainment and information to the driver and passengers.

Java program to find maximum profit by buying and selling shares from a given set of values.

• Iterate through the array of values and keep track of the minimum value seen so far.

• Calculate the difference between the current value and the minimum value, and update the maximum profit if necessary.

• Return the maximum profit obtained.

Code for Fibonacci series up to 10

• Declare two variables to store the first two numbers of the series

• Use a loop to generate the next numbers in the series by adding the previous two

• Print the series up to 10

Interview questions for Junior Software Engineer position covering OOP, HTML, SDLC, and programming logic.

• OOP stands for Object-Oriented Programming, with types including classes, objects, inheritance, polymorphism, and encapsulation.

• HTML tags are used to structure web pages, while null tag is not a valid HTML tag.

• SDLC stands for Software Development Life Cycle, with stages like planning, analysis, design, implementation, testing, and maintenance.

• Example of printing a pattern...read more

I deal with negativity by focusing on solutions and maintaining a positive attitude.

• I try to understand the root cause of the negativity and address it

• I surround myself with positive people and seek their support

• I practice mindfulness and meditation to stay calm and centered

• I focus on finding solutions rather than dwelling on the problem

• I maintain a positive attitude and try to see the silver lining in every situation

C++ is a compiled language with pointers and memory management, while Java is an interpreted language with garbage collection.

• C++ is faster and more memory-efficient than Java.

• Java is platform-independent, while C++ is not.

• C++ allows for manual memory management with pointers, while Java has automatic garbage collection.

• Java has a simpler syntax and is easier to learn than C++.

• C++ is commonly used for system-level programming, while Java is used for web and mobile application...read more

C++ offers high performance, low-level control, and a wide range of applications.

• C++ is faster than many other programming languages due to its low-level control.

• C++ is widely used in developing operating systems, game engines, and high-performance applications.

• C++ supports object-oriented programming, templates, and generic programming.

• C++ has a large community and a vast library of pre-built functions and classes.

• C++ is backward compatible with C, allowing for easy integrat...read more

Artificial Intelligence in Healthcare

• AI in healthcare is revolutionizing the industry by improving diagnostics and treatment

• Machine learning algorithms can analyze medical images to detect diseases like cancer

• Natural language processing can help in extracting valuable information from medical records

• AI chatbots are being used for patient engagement and support

• Ethical considerations and data privacy are important when using AI in healthcare

Virtual functions in C++ allow a function to be overridden in a derived class.

• Virtual functions are declared in a base class with the 'virtual' keyword.

• They are overridden in derived classes to provide specific implementations.

• Virtual functions enable polymorphism, allowing objects of different derived classes to be treated as objects of the base class.

• Example: class Shape { virtual void draw() { ... } }; class Circle : public Shape { void draw() override { ... } };

• Example: S...read more

I would listen to their concerns, empathize with their perspective, find common ground, and propose mutually beneficial solutions.

• Listen actively to understand their concerns

• Empathize with their perspective to build rapport

• Find common ground to establish a foundation for negotiation

• Propose mutually beneficial solutions to address their needs

I have successfully managed multiple cloud migration projects by creating a detailed strategy and ensuring seamless transition.

• Identified key stakeholders and their requirements

• Conducted thorough assessment of current infrastructure and applications

• Developed a detailed migration plan including timelines and milestones

• Implemented necessary changes and monitored progress closely

• Ensured minimal disruption to business operations during migration

• Provided training and support to st...read more

The percentage of variation in project scope can vary depending on the project complexity and changes.

• Percentage of variation in project scope can range from 5% to 25% in my experience.

• Factors such as changing requirements, stakeholder input, and external factors can contribute to scope variation.

• For example, in a software development project, scope variation could be around 10% due to new feature requests.

Proficient in Java, Python, and SQL.

• Java

• Python

• SQL

Inheritance is a concept in object-oriented programming where a class inherits properties and behaviors from another class.

• Allows a class to inherit attributes and methods from another class

• Promotes code reusability and reduces redundancy

• Creates a parent-child relationship between classes

• Derived class can override or extend the functionality of the base class

Reverse a linkedlist in groups of given set size

• Iterate through the linked list in groups of given size

• Reverse each group using standard linked list reversal technique

• Connect the reversed groups to form the final linked list

I have used multiple libraries for different purposes.

• I have used React for front-end development.

• For state management, I have used Redux.

• For API calls, I have used Axios.

• For styling, I have used Material-UI.

• For testing, I have used Jest and Enzyme.

SSIS is a tool provided by Microsoft for data integration and workflow applications.

• SSIS (SQL Server Integration Services) is a component of SQL Server used for building data integration and workflow applications.

• It allows users to create packages to extract, transform, and load data from various sources into SQL Server databases.

• SSIS can be used for tasks such as data migration, data warehousing, and ETL (Extract, Transform, Load) processes.

• It provides a graphical interface ...read more

SSIS tools include SQL Server Data Tools, SQL Server Management Studio, BIDS, and DTS Designer.

• SQL Server Data Tools (SSDT) - used for building SSIS packages

• SQL Server Management Studio (SSMS) - used for managing and deploying SSIS packages

• Business Intelligence Development Studio (BIDS) - used for creating SSIS projects

• DTS Designer - used for designing Data Transformation Services packages

An array in Java is a data structure that stores a fixed-size collection of elements of the same data type.

• Arrays are declared using square brackets [] after the data type.

• Elements in an array are accessed by their index, starting from 0.

• Example: String[] names = new String[5];

Storage classes in C, memory allocation, structures and unions.

• Storage classes in C are used to define the scope and lifetime of variables.

• Memory allocation in C is done using functions like malloc(), calloc(), and realloc().

• Structures in C are used to group related data together, while unions allow for multiple data types to share the same memory space.

SDLC is a process followed for software development. STLC is a process followed for software testing. Different models and types of testing are used in both.

• SDLC stands for Software Development Life Cycle

• STLC stands for Software Testing Life Cycle

• SDLC includes phases like planning, analysis, design, implementation, and maintenance

• STLC includes phases like test planning, test design, test execution, and test closure

• Different models used in SDLC are Waterfall, Agile, Spiral, et...read more

A React application for tic-tac-toe game.

• Create a Board component to display the game grid

• Implement logic to handle player turns and winning conditions

• Use state management to update the game state

Contagious storage of same data refers to multiple references pointing to the same data in memory.

• Contagious storage can lead to unexpected behavior if one reference modifies the data.

• Java uses pass-by-value, so when passing objects, a new reference is created pointing to the same data.

• Example: If two variables point to the same object and one variable modifies the object, the change is reflected in both variables.

MSBI stands for Microsoft Business Intelligence. It is a suite of tools used for data integration, analysis, and reporting.

• MSBI includes tools like SQL Server Integration Services (SSIS) for data integration, SQL Server Analysis Services (SSAS) for data analysis, and SQL Server Reporting Services (SSRS) for reporting.

• SSIS is used for ETL (Extract, Transform, Load) processes to move data between systems.

• SSAS is used for creating and managing multidimensional data models for an...read more

Inheritance is a mechanism in Java where a new class inherits properties and behaviors from an existing class.

• Allows a class to inherit fields and methods from another class

• Promotes code reusability and reduces redundancy

• Creates a parent-child relationship between classes

• Derived class can access non-private members of the base class

• Example: class B extends class A

Meta programming is writing code that writes code, allowing for dynamic generation and modification of classes and methods at runtime.

• Meta programming allows for creating methods and classes dynamically.

• It can be used for defining methods at runtime based on certain conditions.

• Examples include defining methods using define_method or dynamically creating classes using Class.new.

Concurrency in Rails allows multiple tasks to be executed simultaneously, improving performance and responsiveness.

• Concurrency in Rails is achieved through the use of background jobs and threads.

• It allows multiple requests to be processed at the same time, improving the overall performance of the application.

• Popular tools for implementing concurrency in Rails include Sidekiq, DelayedJob, and Active Job.

• Concurrency can help prevent bottlenecks and improve the responsiveness of...read more

Hash map is a data structure that stores key-value pairs and allows for fast retrieval of values based on keys.

• Hash map provides constant time complexity O(1) for insertion, deletion, and retrieval operations.

• It is commonly used to implement associative arrays, database indexing, and caching mechanisms.

• Example: Storing student grades with student IDs as keys and grades as values.

The @aura enabled is used to enable Lightning Components to access the server-side controller.

• It allows the Lightning Component to communicate with the server-side controller.

• It enables the component to access server-side resources.

• It helps in creating dynamic and responsive user interfaces.

• It is used in Lightning Component development.

• Example: @aura enabled method can be used to retrieve data from the server-side controller and display it in the component.

A union is a data structure that allows storing different data types in the same memory location, while a structure is a data structure that allows storing different data types in separate memory locations.

• A union uses the same memory location for all its members, so only one member can be active at a time.

• A structure allocates separate memory locations for each member, allowing multiple members to be active simultaneously.

• Unions are useful when memory needs to be shared betw...read more

Manual testing is the process of manually testing software for defects without the use of automation tools.

• Involves testers executing test cases manually without automation tools

• Requires human intervention to ensure all aspects of the software are tested

• Helps in identifying defects that may not be caught by automated testing

• Can be time-consuming and labor-intensive

• Examples include exploratory testing, ad-hoc testing, and regression testing

Automation testing is the use of software tools to control the execution of tests and compare actual outcomes with expected outcomes.

• Automation testing helps in reducing human errors and increasing test coverage

• It is faster and more reliable compared to manual testing

• Examples of automation testing tools include Selenium, Appium, and JUnit

Multithreading is the ability of a CPU to execute multiple threads concurrently, allowing for improved performance and responsiveness in software applications.

• Multithreading allows for parallel execution of tasks, improving performance by utilizing multiple CPU cores.

• Threads share the same memory space, making communication between them easier and faster.

• Examples of multithreading include web servers handling multiple client requests simultaneously and video games rendering g...read more

Oops concepts refer to Object-Oriented Programming principles like 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.

useMemo is used to memoize a value, while useCallback is used to memoize a function.

• useMemo is used to memoize a computed value and recompute it only when its dependencies change.

• useCallback is used to memoize a function instance and re-render it only when its dependencies change.

• Example: useMemo(() => computeExpensiveValue(a, b), [a, b]) vs useCallback(() => handleButtonClick(a, b), [a, b])

Python is a high-level programming language known for its simplicity and readability.

• Python is interpreted, not compiled

• It supports multiple programming paradigms like object-oriented, imperative, and functional programming

• Python is widely used in web development, data science, artificial intelligence, and more

A variable is a container for storing data values in programming.

• Variables are used to store information that can be referenced and manipulated in a program.

• They have a name, a data type, and a value.

• Examples: x = 5, name = 'John', is_valid = True

Data types are classifications of data items that determine the kind of operations that can be performed on them.

• Data types define the type of data a variable can hold, such as integers, strings, lists, etc.

• Examples of data types in Python include int, float, str, list, tuple, dict, etc.

• Data types help in ensuring data integrity and efficient memory usage.

Loops are used in programming to execute a block of code repeatedly until a certain condition is met.

• Loops help in automating repetitive tasks

• Types of loops in Python include for loop and while loop

• Example: for i in range(5): print(i) will print numbers from 0 to 4

ANR stands for Application Not Responding, which occurs when an Android app is unresponsive for a certain period of time. An Activity is a single screen with a user interface in an Android app.

• ANR is a situation where the main UI thread of an Android app is blocked for too long, usually more than 5 seconds.

• Activities are the building blocks of an Android app, each representing a single screen with a user interface.

• ANR can be caused by long-running operations on the main threa...read more

Writing Jira queries for Business Analyst role

• Use JQL (Jira Query Language) to create queries

• Utilize keywords like 'project', 'assignee', 'status', 'priority', etc.

• Combine multiple criteria using logical operators like 'AND', 'OR'

• Save commonly used queries as filters for easy access

• Use Jira's advanced search features for more complex queries