Decipher CloudTech Interview Questions and Answers

20 - MCQ test related C&C++ basic to advance
2 - coding questions -
1) create class which allows only one instance creation at a time if you try to create another before deleting existing object then class should throw exception..

2) find the distance between leftmost string and rightmost string(string's chars order doesn't matter) In a given long shuffled string.
Ex :-
Shuffled string = "xaxxcxbxxxcxxaxxbx"
target string= "abc"
Ans: 3
(Leftmost string is last index 6
Right most is 9 so 9-6=3)
Note:- other chars not necessarily 'x' it can be any

Q1. Explain oops concepts
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Q2. Runtime polymorphism with example
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Q3. Vtable and Vptr working
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Q4. Abstraction and pure virtual function
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Q5. Smart pointers
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Q6. Implementation of STL libraries any container class ex:- Vector
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Q7. Singleton class creation (code) what is use of it ?
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Q8. SQL simple questions
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Q9. What is the use of Mutex
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Q10. Be strong in theoretically (why, what when to use the concept)
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Q1. They asked me regarding project
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Q2. Sql queries and data bricks related questions
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Q1. Details explaination on project that I have worked and optimization techniques
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Q1. What is the Entity-Relationship (ER) model?
Ans. 
The Entity-Relationship (ER) model is a data model used to describe the relationships between entities in a database.
• Entities are objects or concepts in the real world that can be distinguished from each other.

• Relationships describe how entities are related to each other.

• Attributes are properties that describe entities and relationships.

• ER diagrams visually represent the ER model, showing entities, relationships, and a...read more
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Q2. What are the advantages of using threads compared to processes?
Ans. 
Threads are lighter weight than processes, share memory space, and are more efficient for multitasking.
• Threads share the same memory space, making communication between them faster and more efficient.

• Threads are lighter weight than processes, as they share resources such as memory and file descriptors.

• Threads are more efficient for multitasking, as they can run concurrently within the same process.

• Threads are easier to...read more
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Google primarily focuses on pure data structures and algorithms-based questions during coding interviews. Other computer science core topics are typically not covered in Google's interviews. Therefore, it is essential to be proficient in data structures and algorithms to succeed in the Google coding interview.

An aptitude test is a tool used to evaluate a person's skills, abilities, and potential for success in a specific role or activity.

Group discussion is a process of exchanging ideas and opinions among individuals on a specific topic. It is a structured form of communication in which participants have the opportunity to express their views while also listening to others' perspectives on the same subject.

Q1. What are your strengths and weaknesses?
Ans. 
My strengths include problem-solving skills and attention to detail. My weaknesses include time management and public speaking.
• Strengths: problem-solving skills

• Strengths: attention to detail

• Weaknesses: time management

• Weaknesses: public speaking
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Q2. What reasons can you provide for why we should consider hiring you?
Ans. 
I have a strong foundation in web development, a passion for learning, and a proven track record of delivering high-quality projects.
• I have a solid understanding of HTML, CSS, and JavaScript

• I am proficient in using various web development tools and frameworks such as React and Node.js

• I have successfully completed several web development projects, including a responsive e-commerce website for a local business
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An assignment is a task or piece of work that you are given to complete, particularly as part of your job or studies. The assignment for the course includes written assignments and practical tests, similar to tasks, work, jobs, or charges.

A case study is a detailed description and assessment of a specific situation in the real world, created for the purpose of deriving generalized insights and understanding. It can focus on an individual, a group of people, an organization, or an event, among other subjects.

Q1. What do you consider your greatest accomplishment?
Ans. 
My greatest accomplishment was successfully leading a team to launch a new website for a major client ahead of schedule.
• Successfully led a team to launch a new website

• Completed the project ahead of schedule

• Received positive feedback from the client
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Q2. What factors motivate you in your professional life?
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I am motivated by challenges, learning opportunities, and the ability to make a positive impact.
• Challenges push me to grow and improve my skills.

• Learning opportunities allow me to stay updated with the latest technologies and trends.

• Making a positive impact through my work gives me a sense of fulfillment and purpose.
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Q1. What does your ideal work environment look like?
Ans. 
My ideal work environment is a collaborative space with supportive colleagues, opportunities for growth, and a healthy work-life balance.
• Collaborative team environment where ideas are shared and valued

• Supportive colleagues who are willing to help and provide feedback

• Opportunities for growth and learning new technologies

• Healthy work-life balance with flexible hours and remote work options
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Q2. How would you impact employee retention?
Ans. 
By creating a positive work environment, offering growth opportunities, and implementing employee recognition programs.
• Creating a positive work environment through open communication and support

• Offering growth opportunities such as training programs and career advancement

• Implementing employee recognition programs to acknowledge and reward hard work

• Providing competitive salaries and benefits to attract and retain top ta
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Q1. What are real-time operating systems?
Ans. 
Real-time operating systems are designed to provide predictable response times and prioritize tasks based on timing constraints.
• Real-time operating systems prioritize tasks based on timing constraints

• They are designed to provide predictable response times

• Examples include VxWorks, QNX, and FreeRTOS
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Q2. Are the applicants first asked several questions regarding data structures and algorithms?
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Q1. What topics are typically discussed during the final round of interviews, particularly regarding salary expectations, working hours, and other job requirements?
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Q2. Are you comfortable working night shifts, considering that many roles at Genpact support international clients?
Ans. 
Yes, I am comfortable working night shifts to support international clients.
• I have previous experience working night shifts in a customer service role.

• I am a night owl and tend to be more productive during late hours.

• I understand the importance of supporting international clients and am willing to adjust my schedule accordingly.
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Q1. A process associate is crucial in ensuring the smooth operation of various business processes across different industries
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Q2. What are the operational tasks necessary to maintain efficiency and quality?
Ans. 
Operational tasks for maintaining efficiency and quality include regular testing, monitoring performance, updating software, and implementing best practices.
• Regularly test website functionality to ensure it is working properly

• Monitor website performance metrics such as load times and user experience

• Update software and plugins to the latest versions to prevent security vulnerabilities

• Implement best practices for coding,
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Q1. How can you prepare examples demonstrating your leadership, conflict resolution, and prioritization skills to excel in a managerial round interview?
Ans. 
Prepare examples showcasing leadership, conflict resolution, and prioritization skills for a managerial round interview.
• Leadership: Discuss a project where you led a team to success, highlighting your ability to motivate and guide others.

• Conflict Resolution: Share a situation where you successfully resolved a conflict within a team or project, emphasizing your communication and problem-solving skills.

• Prioritization: Ta...read more
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Q2. How do you demonstrate adaptability, leadership, and a commitment to fostering a positive work environment?
Ans. 
I demonstrate adaptability, leadership, and commitment by actively seeking feedback, taking on new challenges, and fostering collaboration within the team.
• Seek feedback from colleagues and supervisors to continuously improve

• Volunteer for new projects or tasks to expand skills and knowledge

• Encourage open communication and teamwork among team members

• Lead by example by showing a positive attitude and willingness to help o...read more
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Q1. Azure cloud platform tech
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Q2. Informatica tech stack ques
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Q1. Adf tech stack que
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Q2. Scd type 2 implementation
Ans. 
SCD Type 2 implementation involves tracking historical changes in data by creating new records for each change.
• Identify the columns that need to be tracked for changes

• Add effective start and end dates to track the validity of each record

• Insert new records for changes and update end dates for previous records

• Maintain a surrogate key to uniquely identify each version of the record
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Q1. Dw related que ans
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Q2. Solution design related que
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Q1. Aspiration from my end
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Q2. How soon can join
Ans. 
I can join the team within 2 weeks.
• I can start within 2 weeks of receiving the offer.

• I need to give notice to my current employer.

• I may need to relocate, which could affect my start date.
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For example, a ₹10 LPA CTC could mean an in-hand salary of ₹70,000–₹75,000 per month, depending on deductions and benefits.

✨ 𝗣𝗿𝗼 𝗧𝗶𝗽: Always request a detailed salary structure during negotiations—it’s your roadmap to making informed decisions

𝗖𝗧𝗖 𝘃𝘀 𝗜𝗻-𝗛𝗮𝗻𝗱 𝗦𝗮𝗹𝗮𝗿𝘆: 𝗧𝗵𝗲 𝗥𝗲𝗮𝗹𝗶𝘁𝘆 𝗖𝗵𝗲𝗰𝗸 𝗘𝘃𝗲𝗿𝘆 𝗣𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝗡𝗲𝗲𝗱𝘀!

We’ve all been there—excitedly discussing job offers and hearing about the impressive CTC (Cost to Company). But when payday arrives, you wonder

Q1. 2️⃣ 𝗜𝗻-𝗛𝗮𝗻𝗱 𝗦𝗮𝗹𝗮𝗿𝘆: This is the actual amount you take home after deductions like: • Employee’s contribution to PF • Income tax (TDS) • Professional tax
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Q2. 𝗖𝗧𝗖 𝘃𝘀 𝗜𝗻-𝗛𝗮𝗻𝗱 𝗦𝗮𝗹𝗮𝗿𝘆: 𝗧𝗵𝗲 𝗥𝗲𝗮𝗹𝗶𝘁𝘆 𝗖𝗵𝗲𝗰𝗸 𝗘𝘃𝗲𝗿𝘆 𝗣𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝗡𝗲𝗲𝗱𝘀! We’ve all been there—excitedly discussing job offers and hearing about the impressi...read more
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Q1. What are custom hooks in React, and what are their use cases? Additionally, can you provide an example of a custom hook that performs an API call and utilizes the retrieved data?
Ans. 
Custom hooks in React are reusable functions that allow you to extract component logic into separate functions for better code organization and reusability.
• Custom hooks are created using the 'use' prefix and can be used to share logic between components.

• Use cases for custom hooks include fetching data from an API, handling form state, managing local storage, and more.

• Example of a custom hook for API call: const useFetc...read more
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Q2. What is the difference between useMemo and useCallback in React?
Ans. 
useMemo is used to memoize a value, while useCallback is used to memoize a function.
• useMemo is used to memoize a value and recompute it only when its dependencies change.

• useCallback is used to memoize a callback function and prevent unnecessary re-renders.

• Example: useMemo can be used to memoize the result of a complex computation, while useCallback can be used to memoize an event handler function.
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Q3. What is the difference between class-based components and functional components in React?
Ans. 
Class-based components use ES6 classes and have lifecycle methods, while functional components are simpler and use functions.
• Class-based components use ES6 classes to create components, while functional components are created using functions.

• Class-based components have lifecycle methods like componentDidMount and componentDidUpdate, while functional components do not.

• Functional components are simpler and more lightweig...read more
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Q4. How can you implement the lifecycle of a React component in a functional component?
Ans. 
Implementing the lifecycle of a React component in a functional component
• Use the useEffect hook to replicate lifecycle methods like componentDidMount, componentDidUpdate, and componentWillUnmount

• Pass an empty array as the second argument to useEffect to mimic componentDidMount

• Pass a variable or state as the second argument to useEffect to mimic componentDidUpdate

• Return a cleanup function inside useEffect to mimic compo
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Q5. What are the various state management techniques available in React?
Ans. 
Various state management techniques in React include Context API, Redux, and local state.
• Context API: React's built-in solution for passing data through the component tree without having to pass props down manually at every level.

• Redux: A popular state management library for React applications, allowing for a centralized store to manage application state.

• Local state: Managing state within individual components using us
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Q6. What is the architecture of Redux, and what purposes do middlewares serve within it?
Ans. 
Redux is a predictable state container for JavaScript apps. Middlewares are functions that intercept actions before they reach the reducer.
• Redux follows a unidirectional data flow architecture.

• Middlewares in Redux are functions that can intercept, modify, or dispatch actions.

• Common use cases for middlewares include logging, asynchronous API calls, and handling side effects.

• Examples of popular Redux middlewares are Redu...read more
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Q7. What is hoisting in JavaScript?
Ans. 
Hoisting in JavaScript is the behavior where variable and function declarations are moved to the top of their containing scope during the compilation phase.
• Variable declarations are hoisted to the top of their scope, but not their initializations.

• Function declarations are fully hoisted, meaning they can be called before they are declared.

• Hoisting can lead to unexpected behavior if not understood properly.
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Q8. What is event bubbling in JavaScript?
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Event bubbling is the propagation of events from the target element up through its ancestors in the DOM tree.
• Events triggered on a child element will 'bubble up' and trigger on parent elements.

• Event listeners can be attached to parent elements to handle events from multiple child elements.

• Stopping event propagation can be done using event.stopPropagation() or event.stopImmediatePropagation().
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Q9. What are block scope and function scope in JavaScript?
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Block scope and function scope are two types of scopes in JavaScript that determine the visibility and accessibility of variables.
• Block scope refers to the visibility of variables within a block of code enclosed by curly braces. Variables declared with 'let' and 'const' have block scope.

• Function scope refers to the visibility of variables within a function. Variables declared with 'var' have function scope.

• Variables de...read more
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Q10. Have you had experience working with semantic tags in HTML?
Ans. 
Yes, I have experience working with semantic tags in HTML.
• Used semantic tags like <header>, <nav>, <main>, <section>, <article>, <aside>, <footer> for better structure and SEO.

• Understand the importance of using semantic tags for accessibility and search engine optimization.

• Semantic tags help in organizing content and making it more readable for developers and browsers.
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Q11. What are the various methods for creating an object in JavaScript?
Ans. 
Various methods for creating an object in JavaScript include object literals, constructor functions, ES6 classes, and Object.create() method.
• Object literals: var obj = { key: value };

• Constructor functions: function ObjectName() { this.key = value; } var obj = new ObjectName();

• ES6 classes: class ClassName { constructor() { this.key = value; } } var obj = new ClassName();

• Object.create() method: var obj = Object.create(pr
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Q12. What are the differences between shallow copy and deep copy in JavaScript?
Ans. 
Shallow copy only copies the references of nested objects, while deep copy creates new copies of nested objects.
• Shallow copy creates a new object but does not create copies of nested objects, only copies their references.

• Deep copy creates a new object and also creates new copies of all nested objects.

• Shallow copy can be achieved using Object.assign() or spread operator, while deep copy can be achieved using JSON.parse(
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Q13. What will be the output of the following JavaScript code fragment: `const a; function test() { console.log(a); }; test();`?
Ans. 
The code will throw an error because 'a' is declared but not initialized.
• The code will result in a ReferenceError because 'a' is declared but not assigned a value.

• Variables declared with 'const' must be initialized at the time of declaration.

• Initializing 'a' with a value before calling test() will prevent the error.
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Q14. How can you use CSS to arrange elements in a row and column layout?
Ans. 
CSS can be used to arrange elements in a row and column layout using flexbox or grid layout properties.
• Use display: flex; for a row layout and display: flex; flex-direction: column; for a column layout

• Use justify-content and align-items properties to align items in the main axis and cross axis respectively

• For grid layout, use display: grid; and grid-template-columns or grid-template-rows to define the layout
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Q15. Have you utilized CSS preprocessors, and if so, which ones?
Ans. 
Yes, I have utilized CSS preprocessors such as SASS and LESS.
• I have experience using SASS to streamline my CSS workflow by utilizing variables, mixins, and nesting.

• I have also worked with LESS to improve code organization and maintainability through features like variables and functions.
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Q16. If I have assigned different colors to an ID and a class and applied both to the same element, which color will be applied based on CSS specificity precedence?
Ans. 
The color applied will be based on the specificity of the selector, with ID having higher specificity than class.
• ID has higher specificity than class in CSS

• Color applied will be based on the selector with higher specificity

• Example: If ID selector has color red and class selector has color blue, the color applied will be red
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Q1. What improvements to interfaces were introduced in Java 8 that were missing in Java 7, specifically regarding static and default methods?
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Q2. Explain internal working of HashMap ? How to synchronize it ?
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Q3. Given a list of employees with their ratings, how can you sort the employees based on their ratings using the Java 8 Streaming API?
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Q4. Will the program compile if the parent class throws a runtime exception while the child class throws an arithmetic exception?
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Q5. In a Spring Boot application with two databases, how can you configure JDBC to specify which database to use?
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Q6. How to use a jetty server in your spring boot application ?
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Q7. Difference between @RequestParam and @PathVariable ?
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Q8. How would you handle a scenario where one microservice is awaiting a response from another microservice that is taking an extended time to respond?
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There are two main sections: foundation and advanced. The foundation section consists of three subsections: quantitative, reasoning, and verbal. If you pass the foundation section but do not clear the advanced section, you will be considered for either the ninja role or the digital role during the interview process. The advanced section includes advanced aptitude questions and two coding questions.

Q1. Can you provide an introduction about yourself?
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Q2. 3 to 4 questions based on database
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Q3. 2 easy coding questions
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Q4. Questions based on technology that I knew
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Q5. Situation based questions
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