Vistara Interview Questions, Process, and Tips

Q1. Basic questions for .Net and stored procedure
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Q2. Questions like functions and sp difference, solid principles etc.
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Q1. Two programs based on hacker earth test.
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Q1. Use less questions based on 25 horses running a race ...
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Q2. Question based on reverse a string
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Q3. Question on git commands(who asks these)
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Q4. Questions based on stack and heap memory
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Q5. Questions on explaining useless unworthy questions having no relevance to any experience of work.
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Q1. Node js working in detail
Ans. 
Node.js is a runtime environment that allows you to run JavaScript on the server side.
• Node.js is built on Chrome's V8 JavaScript engine.

• It uses an event-driven, non-blocking I/O model that makes it lightweight and efficient.

• Node.js is commonly used for building server-side applications, APIs, and real-time applications.

• It has a large ecosystem of libraries and frameworks, such as Express.js and Socket.io.
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Q2. Timer working in node
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In Node.js, timers can be implemented using functions like setTimeout() and setInterval().
• Use setTimeout() to execute a function once after a specified delay

• Use setInterval() to execute a function repeatedly at a specified interval

• Clear a timer using clearTimeout() or clearInterval()

• Example: setTimeout(() => { console.log('Timer executed!'); }, 2000);
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Q1. HLD questions on db and backend
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Q2. Relational non relational db
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Q1. What is the internal implementation of Hashing and what is collision?
Ans. 
Hashing is a technique used to map data to a fixed-size array, collision occurs when two different inputs produce the same hash value.
• Hashing involves using a hash function to map data to a fixed-size array.

• Collision happens when two different inputs produce the same hash value.

• Common techniques to handle collisions include chaining and open addressing.
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Q2. Is time complexity of HashMap always O(1) ?
Ans. 
No, time complexity of HashMap is not always O(1).
• Time complexity of HashMap is O(1) on average, but can degrade to O(n) in worst case scenarios.

• Worst case scenarios include hash collisions, which can lead to linear probing and degrade performance.

• Load factor and capacity of the HashMap can also affect time complexity.

• In scenarios where many keys hash to the same index, the time complexity can degrade.
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Q1. Yet to have the interview. Ambition box is forcefully making me enter these details
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So many coding words and also maths Question in percentage of clothes price about nature types

Q1. Math percentage question answer, about clothes and buying products.
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Q2. Half about nature and some natural resources.
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Q3. All about country's details type question and half about nature type
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Q4. Some about maths percentage of buying clothes types question
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Q5. And some rock type material type question
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10 th pass Question Ans and are very easy to solve i like it very much i try to do my best.

Q1. Explain how did you handle the imbalance in data
Ans. 
I handled data imbalance by using techniques like oversampling, undersampling, SMOTE, or using ensemble methods.
• Used oversampling to increase minority class instances

• Used undersampling to decrease majority class instances

• Applied SMOTE (Synthetic Minority Over-sampling Technique) to generate synthetic samples for minority class

• Utilized ensemble methods like Random Forest or Gradient Boosting to handle imbalance
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Q2. Write a sql query for the given problem statement. Can be solved using advanced concepts like lead and lag
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Advanced sql and basics of data science

Array String Data strucure, pyhon, java

India vs pak , india vs russia

About social media and negative impacts and positive impact of social media platforms

Q1. Introduction about your self
Ans. 
Experienced Senior Executive with a proven track record in leading teams and driving business growth.
• Over 10 years of experience in senior leadership roles

• Strong strategic planning and decision-making skills

• Proven ability to drive revenue growth and increase profitability

• Excellent communication and interpersonal skills

• Led a team that successfully launched a new product line, resulting in a 20% increase in sales
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Q2. Why you want to join the organisation
Ans. 
I am drawn to the organization's innovative approach to solving complex problems and its commitment to making a positive impact on society.
• I admire the organization's track record of success and its reputation for excellence in the industry.

• I am excited about the opportunity to work with a talented team of professionals who share my passion for driving change and achieving results.

• I believe that my skills and experienc...read more
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About you present after 5 years how you see your self

Q1. Tell me something about you native place
Ans. 
My native place is a small coastal town known for its beautiful beaches and delicious seafood.
• Located in the southern part of the country

• Famous for its annual beach festival

• Rich in cultural heritage and traditional art forms

• Popular tourist destination for water sports and relaxation
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Q2. Tell me something about Avation
Ans. 
Aviation refers to the operation of aircraft, including airplanes and helicopters, for transportation, recreation, and other purposes.
• Aviation industry includes commercial airlines, private aviation, military aviation, and aerospace manufacturing.

• Key players in the aviation industry include Boeing, Airbus, and Lockheed Martin.

• Aviation regulations are governed by organizations like the Federal Aviation Administration (F...read more
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Q1. Aviation customer
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Q2. Operation handling
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Airlines codes iata codes

Q1. Aviation customer
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Q2. Operation handling
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Q1. Tell me something about yourself
Ans. 
I am a dedicated and enthusiastic individual with a passion for customer service and travel.
• I have previous experience in customer service roles

• I am a quick learner and adapt well to new environments

• I have a strong attention to detail and excellent communication skills
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Q2. Who is your role model
Ans. 
My role model is my grandmother who has always been a source of inspiration and strength for me.
• She taught me the value of hard work and perseverance.

• Her kindness and generosity towards others have always inspired me to be a better person.

• She overcame many challenges in her life with grace and dignity, showing me the importance of resilience.

• I admire her wisdom and positive outlook on life, which have guided me through
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Any topic they can ask like online gaming

Q1. Tell me something about yourself
Ans. 
I am a dedicated and enthusiastic individual with a passion for customer service and travel.
• I have previous experience in customer service roles

• I am a great team player and enjoy working in a fast-paced environment

• I love traveling and exploring new cultures
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Q2. What is your hobby
Ans. 
My hobby is photography, capturing moments and telling stories through images.
• I enjoy exploring new places and finding unique perspectives to photograph

• I love experimenting with different lighting techniques and editing styles

• Some of my favorite subjects to photograph include landscapes, portraits, and street scenes
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