Labvantage Solutions Software Engineer Interview Questions and Answers

Q1. Describe Life cycle in react
Ans. 
React has three main phases in its lifecycle: mounting, updating, and unmounting.
• Mounting: when a component is created and inserted into the DOM

• Updating: when a component is updated due to changes in props or state

• Unmounting: when a component is removed from the DOM

• Lifecycle methods can be used to perform actions at each phase, such as componentDidMount() or componentWillUnmount()

• React also has error handling methods,
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Q2. Explain strict mode in javascript and it's use
Ans. 
Strict mode is a way to write secure and optimized JavaScript code.
• Enables catching of silent errors

• Disallows duplicate property names or parameters

• Prevents use of undeclared variables

• Makes `eval()` safer to use

• Throws errors on invalid usage of `this` keyword
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CURD operations along with implementation of a mock UI

Q1. Tell about Oops concepts
Ans. 
OOPs concepts are fundamental principles in object-oriented programming, including inheritance, encapsulation, polymorphism, and abstraction.
• Inheritance: Allows a class to inherit properties and behavior from another class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the complex imple...read more
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Q1. Will ask coding related
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Q1. What is Expected salary
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Create an API using Notepad to check if a string is a palindrome or not.

Q1. Solid principal
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Aptitude Test with 1 coding question and 8 other aptitude questions

Q1. DSA questions with some dbms questions.
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Q1. DSA + SQL query writing questions. Do revise SQL before interview.
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Q1. Can you provide an introduction about yourself?
Ans. 
I'm a passionate software engineer with a strong background in full-stack development and a love for solving complex problems.
• Education: Bachelor's degree in Computer Science from XYZ University.

• Experience: 3 years of experience in developing web applications using React and Node.js.

• Projects: Developed an e-commerce platform that increased sales by 30% within the first quarter.

• Skills: Proficient in JavaScript, Python, ...read more
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Q2. What qualifications have you obtained, and can you explain the project you completed during your engineering studies?
Ans. 
I hold a Bachelor's degree in Computer Engineering and developed a web-based project for managing student records.
• Bachelor's degree in Computer Engineering from XYZ University.

• Completed a capstone project on a web application for student record management.

• Utilized technologies like HTML, CSS, JavaScript, and Node.js.

• Implemented features such as user authentication, data visualization, and a responsive design.

• Collaborat...read more
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Q1. Why do you believe this company is a suitable fit for you?
Ans. 
This company aligns with my values, offers growth opportunities, and fosters innovation, making it an ideal environment for my skills.
• The company's commitment to innovation resonates with my passion for developing cutting-edge software solutions.

• I admire the collaborative culture here, which I experienced during my interactions with the team during the interview process.

• The emphasis on professional development and cont...read more
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Q2. Do you have any questions
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It was a Basic Aptitude Test

We were asked to do Sorting, SQL queries (join)

Q1. Can you tell me about yourself?
Ans. 
I am a passionate software engineer with 5 years of experience in developing web applications using various technologies.
• 5 years of experience in software development

• Proficient in developing web applications

• Skilled in using various technologies such as Java, JavaScript, and SQL
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