Denodo Technologies Data Engineer Interview Questions and Answers

Q1. Create basic react app with dummy data fetched from JSON API
Ans. 
Create a basic React app with dummy data fetched from a JSON API.
• Set up a new React project using create-react-app

• Create a component to fetch data from a JSON API using fetch or axios

• Display the fetched data in the component
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Q2. Array methods and Flatten array
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Q3. Event loop
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Q4. HTML and Javascript basics
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3 dsa questions were asked

Q1. Dsa questinsxare asked
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Q2. Coding in live anlong project explanation
Ans. 
Coding in live project involves writing and implementing code in a real-world software development project.
• Understand the project requirements and scope before writing any code.

• Collaborate with team members to ensure code integration and compatibility.

• Test and debug code to ensure it meets project specifications.

• Document code changes and updates for future reference.

• Follow coding best practices and guidelines to mainta...read more
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Q3. Nothing is asked in my 3rd question
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Q4. What does the following C++ code snippet do? int x = 5; while (x > 0) { cout << x << " "; x--; } Results in a compilation error Prints "54321" Prints "545454" Prints "12345"
Ans. 
Prints numbers from 5 to 1 separated by a space
• The code initializes x to 5, then enters a while loop that prints the value of x and decrements it until x is no longer greater than 0

• The output will be '54321'
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Q5. What will be the value printed to the console? #include void function(int arr[], int size) { for (int 10; 1 size; 1++) { arr[1] = 2; } int main() { int arr[] {1, 2, 3, 4, 5); function(arr, 5);...read more
Ans. 
The value printed to the console will be 246810.
• The function modifies the array elements to be 2.

• The main function calls the function to modify the array.

• The loop in main function prints the modified array elements.
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Basic Js concepts like debouncing,event loop, and other output-based questions.

Q1. Js concepts in depth
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Q1. Hiring manager round, questions around my project
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Q2. Optimization techniques
Ans. 
Optimization techniques are methods used to improve the efficiency and performance of software applications.
• Use algorithms like greedy, dynamic programming, or divide and conquer to optimize code

• Minimize time complexity by avoiding nested loops and unnecessary iterations

• Utilize data structures like hash tables, arrays, and trees for efficient storage and retrieval

• Profile code to identify bottlenecks and optimize critic...read more
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There are Question based on data strcuture ,they cover all the topic in ds

In coding code they gave internet access to solve the problem after 30 they told us to make some changes in it and we should ready to explain the entire code

Q1. About ur self some technical problem
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Q1. Explain Object Oriented Programming principles
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Q2. Puzzle
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Q1. Introduce yourself
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Q2. Expectations
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