PERICENT Data Engineer Interview Questions and Answers

Q1. Find in rotated sorted array
Ans. 
Search for a target value in a rotated sorted array.
• Use binary search to find the pivot point where the array is rotated.

• Determine which half of the array the target value lies in based on the pivot point.

• Continue binary search in the appropriate half of the array to find the target value.
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Q2. Design IMDB. how will you manage concurrent ratings
Ans. 
Design IMDB with concurrent ratings management
• Implement a locking mechanism to ensure only one user can update a rating at a time

• Use a queue system to handle multiple rating requests in an orderly manner

• Consider using distributed systems to handle high concurrency levels
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Q1. Design vehicle rental system. Api design
Ans. 
Design a vehicle rental system API
• Create endpoints for listing available vehicles, booking a vehicle, and returning a vehicle

• Include authentication and authorization mechanisms for users and admins

• Implement payment gateway integration for processing rental payments

• Include features like vehicle search, filtering, and reviews/ratings

• Consider scalability and performance optimizations for handling high traffic
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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. K8s architecture
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3 DSA questions on array and strings 1 easy, 2 medium level

Create django backend project for book store

Q1. Behaviour and Situations questions
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