DoSelect Interview Questions and Answers

1 hr test on HackerEarth platform, DSA questions

Q1. Basic details like as previous employment, academic
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Q2. Discussion about salary
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Q1. How to make box segment
Ans. 
A box segment can be made by cutting a box into two parts along one of its faces.
• Choose a face of the box to cut along

• Use a saw or knife to cut through the box along the chosen face

• Sand the edges of the cut to smooth them out if necessary
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Q2. Different Question about major bridge
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Q1. Abstract class and interface
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Q2. Oops concepts and
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SQL, Joins, Window Functions, Aggregations

Q1. SQL Open book test
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Q1. How event loop works
Ans. 
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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Q3. Polyfill of bind
Ans. 
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
Ans. 
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
Ans. 
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
Ans. 
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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