Paisabazaar.com Test Engineer Interview Questions and Answers

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Hackerrank LeetCode 2 Hard questions and 1 medium

1. PEAK ELEMENT QUESTION.
2. COIN DENOMINATION

Q1. Create APIs for a Quiz platform
Ans. 
Create APIs for a Quiz platform
• Design RESTful APIs for creating, updating, deleting, and retrieving quizzes

• Include endpoints for managing quiz questions, answers, and user responses

• Implement authentication and authorization mechanisms for secure access

• Utilize JSON format for data exchange between client and server
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Design and code a parking lot application

Q1. Past work and digging around that. few changes in past work and how to implement them.
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Q1. How to ensure that there is no data corruption when data is being streamed and processed asynchronously
Ans. 
To ensure no data corruption during asynchronous streaming and processing, use data validation, error handling, and checksums.
• Implement data validation techniques to check the integrity of the streamed data.

• Handle errors and exceptions properly to prevent data corruption.

• Use checksums or hash functions to verify the integrity of the data.

• Implement reliable communication protocols like TCP/IP to ensure data integrity.

• Co...read more
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Q1. Find word with most frequency
Ans. 
Use a hashmap to count the frequency of each word in the array of strings and find the word with the highest frequency.
• Create a hashmap to store the frequency of each word

• Iterate through the array of strings and update the frequency in the hashmap

• Find the word with the highest frequency in the hashmap
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Q2. Spring boot concept
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Q1. Write a rest API which return employee data based on ID.
Ans. 
Create a REST API to retrieve employee data by ID
• Use a GET request to /employees/{id} endpoint

• Query the database for employee data based on the provided ID

• Return the employee data in JSON format
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