RippleHire Interview Questions and Answers

SQL, Joins, Window Functions, Aggregations

Q1. SQL Open book test
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Q1. How event loop works
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Event loop is a mechanism that allows for efficient handling of multiple events in a single thread.
• Event loop is used in asynchronous programming to handle non-blocking I/O operations.

• It continuously checks for events in a queue and executes their associated callbacks.

• Event loop is commonly used in JavaScript for handling browser events and Node.js for handling server requests.

• It prevents blocking of the main thread by...read more
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Q2. Polyfill of promise.all
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A polyfill for Promise.all that executes multiple promises concurrently and resolves when all are fulfilled or any is rejected.
• Create a function named 'promiseAll' that accepts an array of promises.

• Use 'Promise.resolve()' to handle non-promise values.

• Utilize 'Promise.allSettled()' to track the status of each promise.

• Return a single promise that resolves with an array of results or rejects with the first error encounter...read more
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Q3. Polyfill of bind
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Polyfill of bind is a function that allows you to bind a specific context to a function.
• The bind polyfill can be implemented using the apply method.

• It returns a new function with the specified context bound to it.

• The polyfill can also accept additional arguments that will be passed to the original function.

• Here's an example of a bind polyfill implementation:

• ```javascript if (!Function.prototype.bind) { Function.proto...read more
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Q1. Case study on data analysis
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Q1. Introduce yourself, your achievements and projects
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I am a seasoned Business Analyst with a track record of successful projects and achievements.
• Led a cross-functional team to implement a new CRM system, resulting in a 20% increase in customer satisfaction

• Developed a data-driven pricing strategy that led to a 15% increase in revenue

• Managed a project to streamline inventory management processes, reducing costs by 10%
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Q2. Basic sql questions like foreign key and primary key, then joins
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Q1. Say me about yourself
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I am a recent graduate with a degree in Computer Science and a passion for coding and problem-solving.
• Graduated with a degree in Computer Science

• Passionate about coding and problem-solving

• Completed internships at tech companies

• Participated in coding competitions
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Q2. Say about the previous experience
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I have previous experience working as a marketing intern at XYZ Company.
• Assisted in creating social media content and managing online campaigns

• Conducted market research and analysis to identify target audience

• Collaborated with team members to develop marketing strategies
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Q1. Achievement and how was it achieved
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I achieved the highest sales record in my team by implementing a new sales strategy.
• Implemented a new sales strategy to increase sales

• Analyzed market trends and customer needs to develop the strategy

• Collaborated with team members to execute the strategy effectively

• Regularly monitored sales performance and made adjustments as needed

• Achieved highest sales record in the team within 6 months
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Q2. Explain your current/previous role in detail
Ans. 
I was responsible for managing client relationships and coordinating project deliverables.
• Managed client relationships and served as the main point of contact for all communication

• Coordinated project deliverables and ensured timely completion

• Collaborated with cross-functional teams to gather requirements and develop project plans

• Monitored project progress and identified any potential risks or issues

• Provided regular upd...read more
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Q1. Details of the previous domain related experience
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Q1. Where do you see yourself after 5 years?
Ans. 
In 5 years, I see myself as a Senior Associate, leading a team and contributing to the growth of the company.
• Advancing to a Senior Associate position

• Leading a team and taking on more responsibilities

• Contributing to the growth and success of the company

• Continuing to learn and develop new skills

• Building strong relationships with clients and colleagues
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