Paisabazaar.com Interview Questions and Answers

Q1. The question was about Nodejs
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Q2. The question was to build a linked list in Nodejs
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Q1. The first question was related to DSA
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Q2. The question was related to SQL
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Q1. What is event loop, how it works.
Ans. 
Event loop is a mechanism in programming that allows for asynchronous execution of code by continuously checking for and handling events.
• Event loop is commonly used in JavaScript to handle asynchronous operations like setTimeout, setInterval, and AJAX requests.

• It works by continuously checking the event queue for any pending events, executing them one by one, and then moving on to the next event.

• Event loop helps in pre...read more
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Q2. Micro task queue and macro task queue.
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Q3. Is node.js single threaded or multi-threaded, also discuss threadpool and it's usages.
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Q4. Tell the order of output, among process, promise, setTimeout, fs, setInterval.
Ans. 
The order of output is fs, process, setTimeout, setInterval, promise.
• fs module is synchronous and will output first

• process is next in line

• setTimeout will be executed after process

• setInterval will be executed after setTimeout

• promise will be executed last
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Q1. JavaScript usages compiler or interpreter.
Ans. 
JavaScript is an interpreted language.
• JavaScript is an interpreted language, meaning it is executed line by line at runtime.

• There is no separate compilation step in JavaScript like in languages that use compilers.

• Examples of interpreted languages include Python, Ruby, and PHP.
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Q2. Tell the output among various for loops using var, let and bind.
Ans. 
Output comparison of for loops using var, let, and bind in JavaScript.
• Using var: variable is function-scoped, may lead to unexpected behavior in loops.

• Using let: variable is block-scoped, recommended for loop iterations.

• Using bind: creates a new function with a specified 'this' value and initial arguments.
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Q3. A medium level dsa question on array, solved it using pre-sum.
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Q4. Situation based question, on how to pick a suitable database.
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Q1. What do you do on daily basis, and how to decide a tech-stack on high level.
Ans. 
I work on coding, debugging, testing, and collaborating with team members. Tech stack decisions are based on project requirements, scalability, performance, and team expertise.
• Daily tasks include coding, debugging, testing, and collaborating with team members

• Tech stack decisions are based on project requirements, scalability, performance, and team expertise

• Consider factors like language compatibility, libraries/framewo...read more
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Q2. Design an online scalable, real-time document sharing application like google docs.
Ans. 
Design a scalable, real-time document sharing app like Google Docs.
• Use websockets for real-time collaboration

• Implement version control to track changes

• Utilize a distributed database for scalability

• Include user authentication and access control

• Support offline editing with automatic sync
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Q3. How to handle images also in the future.
Ans. 
Utilize cloud storage for scalability, implement image compression techniques, and regularly update image processing libraries.
• Utilize cloud storage for scalability

• Implement image compression techniques

• Regularly update image processing libraries
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Q4. Any other way to solve the problem, of high I/O on same document to overcome throughput and conflicts.
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Q1. Iam happy to work this job
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Q2. Iam redy t o work this job
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Q3. This job ian like this job
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Q4. And my firet job
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Q5. This is my bist job
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Normal gmat format just basic aptitude test

Q1. Guesstimate around automobile industry
Ans. 
The automobile industry is a vast sector encompassing manufacturing, sales, and services related to vehicles.
• Global automobile industry revenue is estimated to be over $2 trillion.

• Major players include Toyota, Volkswagen, and General Motors.

• Technological advancements like electric vehicles and autonomous driving are shaping the future of the industry.
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Q2. Revenue forecasting
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MCQ question and answer

Q1. Please can you sale credit card
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Q2. Tell me about your self
Ans. 
I am a dedicated and results-driven sales professional with a proven track record of exceeding targets and building strong client relationships.
• Experienced in sales strategies and techniques

• Strong communication and negotiation skills

• Ability to build and maintain client relationships

• Track record of exceeding sales targets

• Detail-oriented and organized
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Q1. Hard Stock sell problem
Ans. 
The hard stock sell problem involves determining the best time to sell stocks to maximize profit.
• Consider using dynamic programming to solve this problem efficiently.

• Keep track of the minimum stock price seen so far and calculate the maximum profit that can be made by selling at each day.

• The final answer will be the maximum profit that can be made by selling at the last day.
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Q2. Create a server without express
Ans. 
Creating a server without using Express framework
• Use Node.js built-in 'http' module to create a server

• Listen for incoming requests on a specific port

• Handle different routes and methods using 'http' module
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Q3. What is singleton class, write a usecase through code
Ans. 
Singleton class is a class that can only have one instance created throughout the application.
• Singleton class restricts the instantiation of a class to one object.

• It is often used for logging, caching, thread pools, database connections, etc.

• Example: Java implementation of Singleton class -

• public class Singleton { private static Singleton instance; private Singleton() {} public static Singleton getInstance() { if(insta...read more
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MCQ question related to financial things

Q1. Tell me something about your self
Ans. 
I am a results-driven sales executive with 5+ years of experience in exceeding sales targets and building strong client relationships.
• Experienced in developing and implementing sales strategies

• Proven track record of meeting and exceeding sales targets

• Skilled in building and maintaining strong client relationships

• Strong communication and negotiation skills

• Ability to analyze market trends and identify new business opport
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Q2. What is credit card
Ans. 
A credit card is a plastic card issued by a financial institution that allows the cardholder to borrow funds to make purchases.
• Credit cards allow users to make purchases on credit, with the promise to repay the borrowed amount at a later date.

• They often come with a credit limit, which is the maximum amount the cardholder can borrow.

• Cardholders are usually required to pay interest on the borrowed amount if not repaid in...read more
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Q1. Tell me about your self
Ans. 
Experienced sales executive with a proven track record of exceeding targets and building strong client relationships.
• Over 5 years of sales experience in the technology industry

• Consistently met or exceeded sales targets by 20% each quarter

• Built and maintained relationships with key clients such as ABC Company

• Strong negotiation and communication skills

• Proficient in CRM software and sales analytics tools
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Q2. What is credit card
Ans. 
A credit card is a payment card issued by a financial institution, allowing the cardholder to borrow funds to make purchases.
• Credit cards allow users to make purchases on credit, with the promise to repay the borrowed amount at a later date.

• They often come with a credit limit, which is the maximum amount the cardholder can borrow.

• Credit cards may also offer rewards, cashback, or other benefits for using the card.

• Intere...read more
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