Bluetree Consultancy Services Interview Questions and Answers

Q1. Synchronization
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Q2. Design patterns
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Q1. Actions to perform to improve application performance
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Q2. Hibernate questions, spring boot annotations
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Q1. ACID Properties
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ACID properties are a set of properties that guarantee reliable and consistent transactions in a database system.
• Atomicity ensures that either all operations in a transaction are completed successfully or none at all.

• Consistency ensures that the database remains in a valid state before and after the transaction.

• Isolation ensures that the concurrent execution of transactions results in a system state that would be obtai...read more
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Q2. What are Idempotent HTTP Requests?
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Idempotent HTTP requests are requests that can be repeated multiple times without changing the result beyond the initial request.
• Idempotent requests have the same outcome no matter how many times they are executed.

• GET, PUT, and DELETE HTTP methods are typically idempotent.

• POST requests are not idempotent as they can create new resources with each execution.
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Q3. Questions regarding your project, and how did you learn from the projects and tasks assigned to you?
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Q4. System Design
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Q1. Let var const difference
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var, let, and const are all used to declare variables in JavaScript, but they have different scopes and mutability.
• var is function-scoped and can be redeclared and reassigned

• let is block-scoped and can be reassigned but not redeclared

• const is block-scoped and cannot be reassigned or redeclared
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Q2. Polyfills of bind method
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Polyfills of bind method provide a way to use the bind method in older browsers that do not support it natively.
• Polyfill code typically checks if the bind method is available and if not, it creates a new function that mimics the behavior of bind.

• One common polyfill for the bind method is the following: Function.prototype.bind = Function.prototype.bind || function() { // polyfill code here };

• Polyfills are often used to ...read more
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Q1. Make a search bar in React
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Create a search bar component in React for filtering data
• Create a functional component for the search bar

• Use state to store the search query

• Implement a onChange event handler to update the search query

• Filter the data based on the search query
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Q2. React js core concepts
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Q1. How you structure your work
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I structure my work by breaking down tasks, setting priorities, creating timelines, and regularly reviewing progress.
• Break down tasks into smaller, manageable chunks

• Set priorities based on deadlines and importance

• Create timelines to track progress and ensure timely completion

• Regularly review progress and adjust plans as needed
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Q2. How you make a project from scratch
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To make a project from scratch, start by defining requirements, creating a plan, designing the architecture, implementing the code, testing, and deploying.
• Define project requirements and goals

• Create a project plan with timelines and milestones

• Design the architecture of the project, including database schema and system components

• Implement the code following best practices and coding standards

• Test the project thoroughly ...read more
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Q1. Find element whose count is more than n/2
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Use Boyer-Moore Majority Vote Algorithm to find element with count more than n/2.
• Initialize candidate element and count

• Iterate through array, updating count if same as candidate or decrementing if different

• If count becomes 0, update candidate element

• Iterate again to confirm candidate element count is more than n/2
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Q2. One puzzle based on distance and banana
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Q1. Explain the inter relation between a sales and marketing funnel
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Sales and marketing funnels are interconnected processes that guide potential customers from awareness to purchase.
• Sales funnel focuses on converting leads into customers through direct sales tactics.

• Marketing funnel focuses on generating awareness and interest in a product or service.

• Marketing activities feed into the top of the sales funnel by attracting potential customers.

• Sales activities further qualify and nurtur...read more
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Q1. JavaScript OOP concept questions on constructors and classes
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Q2. Output based questions based on Event Loop and constructors.
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Q3. Difference between public, private, protected access modifiers.
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Public, private, and protected are access modifiers used in object-oriented programming to control the visibility of class members.
• Public: accessible from outside the class

• Private: only accessible within the class

• Protected: accessible within the class and its subclasses
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Assessment (Quiz) on Unstop portal.

Q1. Resume shortlisting.
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Q1. Introduce youself.
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I am a motivated and detail-oriented individual with a strong passion for operations and process improvement.
• I have a background in business administration and have completed relevant coursework in operations management.

• I have experience working on cross-functional teams to streamline processes and improve efficiency.

• I am proficient in data analysis and have used tools such as Excel and Tableau to identify areas for im...read more
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Q2. Previous work experience/ internship.
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I have completed a marketing internship at XYZ Company where I assisted with social media campaigns and data analysis.
• Assisted with social media campaigns

• Conducted data analysis

• Worked at XYZ Company
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Q3. Job description.
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Q4. Why you have applied for this role and how does it align with your aspirations.
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I applied for this role because of my interest in operations management and desire to gain practical experience in the field.
• I have a strong academic background in operations management, including coursework in supply chain management and process optimization.

• I am eager to apply my theoretical knowledge to real-world scenarios and learn from experienced professionals in the field.

• I am excited about the opportunity to c...read more
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Q5. This is a monotonus role, so what you will learn from this internship.
Ans. 
You will learn valuable operational skills and gain hands-on experience in a professional setting.
• Developing strong organizational skills

• Learning how to effectively manage time and prioritize tasks

• Gaining experience in problem-solving and decision-making

• Understanding the importance of communication and teamwork in a professional environment
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Q6. Five Competitors of Unstop.
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Competitors of Unstop include CleanSweep, Spotless Solutions, FreshClean, PureShine, and SparklePro.
• CleanSweep

• Spotless Solutions

• FreshClean

• PureShine

• SparklePro
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Q7. Where will you search for internships?
Ans. 
I will search for internships on online job boards, company websites, career fairs, and through networking.
• Online job boards such as Indeed, Glassdoor, and LinkedIn

• Company websites of organizations I am interested in

• Attending career fairs at my university or in the local area

• Networking with professionals in the industry through LinkedIn or in-person events
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