JH Construction Interview Questions and Answers

Q1. Introduced Yourself
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Q2. About knowledge in Software Development
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Coding test duration is 30 to 40 min
on paper pen and topic is simple like related to string,pattern and number's

Q1. Introduction about yourself
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Q2. Salary expectation
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Q1. Related to the basic of html css and js
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Q2. Ask run time short code and explanation
Ans. 
Runtime refers to the period when a program is executing, affecting performance and resource usage.
• Runtime is when code is executed, as opposed to compile time.

• Performance can vary based on algorithms used; e.g., O(n) vs O(n^2).

• Memory usage is crucial; e.g., using arrays vs linked lists can impact runtime.

• Dynamic typing in languages like Python can lead to slower runtime compared to statically typed languages like C++.
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Q1. About yourself and other
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Q2. All about company your expectation and salary disscuced
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Q1. Write a mongoDB query to filter top 5 students
Ans. 
Use MongoDB's aggregation framework to filter and sort students by their scores, returning the top 5 results.
• Use the `find()` method to query the students collection.

• Sort the results by the score field in descending order.

• Limit the results to 5 using the `limit()` method.

• Example: `db.students.find().sort({ score: -1 }).limit(5)`

• Ensure the score field exists and is indexed for better performance.
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Q2. What is redux and difference between redux and context api
Ans. 
Redux is a state management library for JavaScript apps, while Context API is a built-in React feature for managing state.
• Redux provides a centralized store for application state, while Context API allows for state sharing across components without prop drilling.

• Redux uses actions and reducers to manage state changes, whereas Context API uses the Provider and Consumer pattern.

• Redux is more suitable for large applicatio...read more
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