Callido Learning Interview Questions and Answers

Q1. Difference between useMemo and useCallback ?
Ans. 
useMemo is used to memoize a value, while useCallback is used to memoize a function.
• useMemo is used to memoize a computed value and recompute it only when its dependencies change.

• useCallback is used to memoize a callback function and prevent unnecessary re-renders.

• Example: useMemo can be used to memoize the result of a complex computation, while useCallback can be used to memoize an event handler function.
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Q2. How we do error handling in js ?
Ans. 
Error handling in JavaScript involves using try-catch blocks, throwing errors, and using error objects.
• Use try-catch blocks to catch errors and handle them gracefully

• Throw errors using the throw keyword to indicate when something goes wrong

• Use error objects like Error, SyntaxError, TypeError, etc. to provide more information about the error

• Handle asynchronous errors using promises and the .catch() method
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Q3. What is Promises ? Write a Polyfill of Promise.all()
Ans. 
Promises are objects representing the eventual completion or failure of an asynchronous operation.
• Promises are used to handle asynchronous operations in JavaScript.

• Promise.all() takes an array of promises and returns a single promise that resolves when all of the input promises have resolved.

• A polyfill for Promise.all() can be implemented using a combination of Promise and Array.prototype.reduce().
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Frontend assignment make the CRUD application using of reactj.s

Q1. Only self introduction
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Q1. General questions about you, with intro etc
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Q1. General questions abot your work / exp
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Q1. Tell about your self?
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Q2. Your Strong & week points
Ans. 
Strong points - Leadership skills, problem-solving abilities, excellent communication skills. Weak points - Impatience, tendency to micromanage.
• Strong points: Leadership skills - led a team of 50 employees to successfully complete a project ahead of schedule, Problem-solving abilities - consistently find innovative solutions to complex issues, Excellent communication skills - able to effectively convey information to d...read more
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Q3. How you see yourself in next coming 05 years with GIS
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Q4. Situation related to your profession will be given
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Q5. Your background?
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Q1. Excel and Google sheet
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Good interaction with Founder

Q1. Tell me about your self
Ans. 
I am a motivated and creative individual with a passion for social media marketing.
• Experienced in creating engaging content for various social media platforms

• Proficient in analyzing social media metrics to optimize marketing strategies

• Strong communication skills and ability to work well in a team
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Q2. Your strength and weakness
Ans. 
My strength is my creativity and ability to think outside the box. My weakness is sometimes being too detail-oriented.
• Strength: Creativity in designing engaging social media content

• Strength: Ability to come up with innovative marketing strategies

• Weakness: Getting too caught up in minor details and losing sight of the bigger picture
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Q1. Why I want to become a tutor
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Q2. About work flexibility
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Q1. About my work experience
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Q1. How much Exp do you have ?
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Q2. How much salary expexting
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Q3. How to deal with a customer ?
Ans. 
Listen actively, empathize, remain calm, offer solutions, follow up.
• Listen actively to understand the customer's concerns.

• Empathize with the customer's situation to show understanding.

• Remain calm and composed, even in challenging situations.

• Offer solutions or alternatives to address the customer's needs.

• Follow up with the customer to ensure their satisfaction and resolve any outstanding issues.
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Q4. How to plan the time management.
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Effective time management involves setting goals, prioritizing tasks, creating a schedule, and monitoring progress.
• Set clear goals and objectives to guide your time management efforts.

• Prioritize tasks based on importance and deadlines.

• Create a schedule or timetable to allocate time for each task or activity.

• Use tools like calendars, planners, or project management software to organize and track your time.

• Regularly revi...read more
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Q1. Previous experience
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