SNS iHub Interview Questions and Answers

E-commerce website was asked to submit

Q1. What is Virtual DOM
Ans. 
Virtual DOM is a lightweight copy of the actual DOM in memory, used for efficient updating of the UI.
• Virtual DOM is a concept used in frameworks like React to improve performance by minimizing actual DOM manipulations.

• When changes are made to the UI, the Virtual DOM is updated first, then compared to the actual DOM to determine the minimal changes needed.

• This process helps reduce the number of updates to the actual DOM...read more
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Q2. What is Hoisting
Ans. 
Hoisting is a JavaScript mechanism where variable and function declarations are moved to the top of their containing scope during compilation.
• Variable and function declarations are hoisted to the top of their scope.

• Only declarations are hoisted, not initializations.

• Function declarations take precedence over variable declarations.
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Q3. Life cycle of react
Ans. 
React has three main phases in its life cycle: Mounting, Updating, and Unmounting.
• Mounting phase: Component is created and inserted into the DOM.

• Updating phase: Component is updated in response to changes in props or state.

• Unmounting phase: Component is removed from the DOM.
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Q4. What is List and index
Ans. 
A list is a collection of items in a specific order, and an index is the position of an item in the list.
• A list can contain any type of data, such as numbers, strings, or objects.

• Indexes in a list typically start at 0, with the first item being at index 0.

• You can access items in a list using their index, such as list[0] to access the first item.
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Q1. How do you interact with UI/UX designers
Ans. 
I collaborate closely with UI/UX designers to ensure seamless integration of design and functionality.
• Regular meetings to discuss project requirements and design concepts

• Provide feedback on design mockups and suggest improvements

• Work together to implement designs using appropriate technologies and frameworks
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Q2. How to handle difficult projects
Ans. 
Handling difficult projects requires effective communication, problem-solving skills, time management, and collaboration.
• Break down the project into smaller tasks to make it more manageable

• Communicate regularly with team members and stakeholders to address challenges

• Prioritize tasks based on importance and deadlines

• Seek help or guidance from mentors or experienced colleagues when needed

• Stay organized and maintain a pos...read more
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Assignment was given to create form using node js , angular and mongodb

Q1. About node js basics
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Q2. About angular basics
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Group discussion with managers and project management team about my project and work experience

Q1. About my projects
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Basics -45 minutes online mode(MCQs)

Basic coding knowledge - 30 min test(MCQs)

Q1. Tell about yourself
Ans. 
I am a passionate software developer with a strong background in computer science and experience in various programming languages.
• Graduated with a degree in Computer Science

• Proficient in Java, Python, and JavaScript

• Experience with web development frameworks like React and Angular

• Worked on projects involving database management and API integration
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