Jagdamba Auto Components Senior Engineer Interview Questions and Answers

Hacker Rank test with medium difficulty

Q1. Technical discussion mainly around system design, different architectures, problem solving and coding question may be asked.
Add your answer

A case study for a problem statement

Q1. Asked to write a program to check whether string is valid or not. String consists of only three kind of special characters "(), [], {}". We need to return true if all special characters are in correct for...read more
Add your answer
Q2. What is useRef hook used for?
Ans. 
useRef hook is used to persist a mutable value across renders without causing a re-render.
• Used to store mutable values that do not trigger re-renders.

• Commonly used for accessing DOM elements or storing previous values.

• Does not cause a re-render when the value changes.
Answered by AI
Add your answer
Q3. What are the best practices to avoid rerenders and to improve performance
Ans. 
Use memoization, virtual DOM, and shouldComponentUpdate to avoid unnecessary rerenders and improve performance.
• Implement memoization to store the result of expensive function calls and avoid recalculating them.

• Use virtual DOM to efficiently update only the parts of the UI that have changed.

• Override shouldComponentUpdate to prevent unnecessary rerenders by comparing current and next props/state.
Answered by AI
Add your answer
Q4. What are callbacks, Promises, async await
Ans. 
Callbacks, Promises, async await are asynchronous programming concepts in JavaScript.
• Callbacks are functions passed as arguments to another function to be executed later.

• Promises are objects representing the eventual completion or failure of an asynchronous operation.

• async await is a syntax for writing asynchronous code that looks synchronous, making it easier to read and maintain.

• Example: Using a callback to handle th...read more
Answered by AI
Add your answer

Write word count program

Q1. Architecture of Spark
Add your answer
Q2. What is AWS Glue job
Add your answer

They will give you written exam like ssc, upsc.

Q1. Relevant to there skill related only.
Add your answer

Q1. Normal questions and salary negotiation.
Add your answer

Q1. Authentication and authorization
Add your answer
Q2. Solid principles
Add your answer

Basic aptitude questions

Linked list, array, tree and graph questions

Got 2 medium level DSA questions in the coding test

Q1. Computer fundamentals
Add your answer
Q2. System Design Questions
Add your answer

Q1. Coding questions was leecode replace 3 concurrent character in string until there is none
Add your answer
Q2. You can google the answer
Add your answer

Q1. Here also leetcode easy
Add your answer
Q2. Easily solvable
Add your answer