Walmart Interview Questions, Process, and Tips

Q1. Tell me about yourself and day to day activities. difference between Functional vs non-functional testing. difference b/w selenium, WebDriver and cucumber. write a program to validate status code in JAVA f...read more
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Q2. Mostly , in 2nd round just what would you do if project is getting escalated just situational questions.
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Q1. How to reduce model inference latency
Ans. 
To reduce model inference latency, optimize model architecture, use efficient algorithms, batch processing, and deploy on high-performance hardware.
• Optimize model architecture by reducing complexity and removing unnecessary layers

• Use efficient algorithms like XGBoost or LightGBM for faster predictions

• Implement batch processing to make predictions in bulk rather than one at a time

• Deploy the model on high-performance har
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Q2. Different sql joins and their difference
Ans. 
SQL joins are used to combine rows from two or more tables based on a related column between them.
• INNER JOIN: Returns rows when there is at least one match in both tables.

• LEFT JOIN: Returns all rows from the left table and the matched rows from the right table.

• RIGHT JOIN: Returns all rows from the right table and the matched rows from the left table.

• FULL JOIN: Returns rows when there is a match in one of the tables.

• SEL
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Q1. What is OOPS ?
Ans. 
OOPS stands for Object-Oriented Programming System. It is a programming paradigm based on the concept of objects.
• OOPS focuses on creating objects that contain both data and methods to manipulate that data.

• It allows for encapsulation, inheritance, and polymorphism.

• Examples of OOPS languages include Java, C++, and Python.
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Reverse Array of elements in swift

Coding on java and python platform

Q1. About aws cloud
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Q2. About current project
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Q1. How do you give space in span
Ans. 
To give space in span, use CSS properties like padding, margin, or line-height.
• Use padding property to add space inside the span element

• Use margin property to add space outside the span element

• Use line-height property to adjust the height of the line containing the span element
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Q1. React Coding to implement Stop watch with Start, Stop, Resume, Pause
Ans. 
Implement a React stopwatch with start, stop, resume, and pause functionalities.
• Use state to track the elapsed time

• Create functions for start, stop, resume, and pause actions

• Use setInterval for updating the timer every second

• Display the timer in the UI
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Q2. Theoretical Questions on React like Code splitting, Virtual DOM, useCallback etc.
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Q3. How does memory leak happen in Javascript
Ans. 
Memory leaks in JavaScript happen when unused objects are not properly released from memory.
• Memory leaks can occur when variables are not properly dereferenced, preventing garbage collection.

• Closures can also lead to memory leaks if they hold references to large objects.

• Event listeners can cause memory leaks if not removed properly after use.

• Using setInterval without clearing it can lead to memory leaks.

• Circular refere
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Q4. Error Handling component in React
Ans. 
Error handling in React involves creating a component to display error messages and handling errors gracefully.
• Create an ErrorBoundary component to catch errors in child components.

• Use try-catch blocks in async functions to handle errors.

• Display error messages to the user using state or props.

• Use error boundaries to prevent the entire UI from crashing due to a single error.
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Q5. Currying related problem. Implement sum(1)(2)(3)()
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