thebigword Interview Questions and Answers

Q1. Find length of substring with longest distinct characters(non-repeating characters) eg - input "abcdab" result - "4(abcd)"
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Q2. Interviewer was not clear on the question herself, here is what i deduced, If you want to build a scheduler service which takes in jobs to run at certain intervals and you cannot use things like cronjob, e...read more
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Q3. Current project and roles and responsibilities. what is the most difficult technical problem you solved, again i think interviewer was lost on the problem i explained.
Ans. 
I worked on a project involving developing a new algorithm for optimizing network traffic. My role was to design and implement the algorithm, as well as test and debug it.
• Researched existing algorithms and identified their limitations

• Designed a new algorithm that addressed the limitations and improved network performance

• Implemented the algorithm in code and tested it in a simulated network environment

• Debugged issues an...read more
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Q4. Scalability question on one of the project i was explaining
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General aptitude questions like numerical problems and logical reasoning were asked. To be answered in 45 minutes. Another 30 minutes were provided to answer technical MCQs based on finding output of given Java code, programming related MCQs, and some database questions

Q1. What is NoSQL? Do you have experience with NoSQL databases?
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Q2. Self intro and projects
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Q3. Explain machine learning and deep learning in layman terms with real-time examples
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Q4. 4 pillars of OOPs with real time examples
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Q5. Why use OOPs? Your proficiency in Java
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Q6. Explain some machine learning algorithms that you know
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Q7. Difference between SQL and NoSQL. Which one is better?
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Q8. Sort a list of 0s,1s,2s using brute force and optimized methods. Explain it's time and space complexity
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Q9. 3 sum coding question with brute force and optimized solutions with time and space complexity
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Q1. Self intro and family background
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Q2. How to improve biometrics with latest technologies for employee attendance in company
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Q3. Tell me about your friends and what qualities you admire in them. How did you inculcate those qualities in yourself?
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Q4. Where do you see yourself in next 10 years?
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Q5. What is your long term and short term goal?
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Hacker Rack Test with medium to high difficulty

Q1. Explain your current project
Ans. 
I am currently working on developing a mobile application for tracking fitness goals and progress.
• Developing a mobile app using React Native

• Implementing features such as goal setting, progress tracking, and workout logging

• Integrating with wearable devices like Fitbit for data synchronization
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Q2. Questions about kakfa, ES and Java 8
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Q1. Similar questions on your current project and questions around kafka
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Basic Coding Java and algorithm questions

Q1. Location and work area
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Q2. Basic details in general
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Q1. Current and previous work experience and relevance
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Q2. Territories covered
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Q1. Work experience, relevant experience
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Q2. How can I expand their market
Ans. 
Expanding the market can be achieved through market research, identifying new target demographics, developing new products or services, and implementing effective marketing strategies.
• Conduct market research to identify potential new markets or untapped segments within the current market.

• Analyze competitors to understand their strategies and identify opportunities for differentiation.

• Develop new products or services th...read more
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Q1. Create basic react app with dummy data fetched from JSON API
Ans. 
Create a basic React app with dummy data fetched from a JSON API.
• Set up a new React project using create-react-app

• Create a component to fetch data from a JSON API using fetch or axios

• Display the fetched data in the component
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Q2. Array methods and Flatten array
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Q3. Event loop
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Q4. HTML and Javascript basics
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LLD about Order Notification System

Q1. HLD of Zoomcar and discussing Tradeoff and some Behavioural Questions
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Q1. Interview with VP of Engineering general discussion
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Q1. SQL Questions - Constraints- how to optimize long SQL query without changing the output
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Q1. Knowledge about API, ERP, SAP, DBMS, RDBMS, Joins, Normalisation, Codd Rules, Relational Algebra. May ask based on two given tables.
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Q2. JSON, XML, OAuth, REST API, SOAP, GraphQL, HTTP Methods
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Q3. HR questions, basic background, knowledge about B2B, B2C, e-commerce,
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Q1. Details on project, API, procedures of API, knowledge on e-commerce, business aspects of your own projects, Core DBMS, RDBMS, Difference between SQL and NoSQL
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Q2. May give 2 tables and check whether they are normalised or not. If not what should be done. Join them using left join or right join.
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Q3. API, Types of Auth tokens (OAuth, Google Auth, JWT)
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Q4. Procedures of ERP
Ans. 
Procedures of ERP involve defining business processes, configuring the system, testing, training, and ongoing support.
• Define business processes to align with ERP system capabilities

• Configure the ERP system based on defined processes

• Test the system to ensure functionality and data accuracy

• Provide training to users on how to use the ERP system effectively

• Offer ongoing support for system maintenance and troubleshooting
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