Cashfree Payments Sdet Interview Questions and Answers

Q1. Merge two sorted arrays
Ans. 
Merging two sorted arrays into a single sorted array
• Create a new array to store the merged result

• Iterate through both arrays simultaneously, comparing elements and adding the smaller one to the result array

• Handle cases where one array is longer than the other by appending the remaining elements
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Q2. Put patch and post in api testing
Ans. 
Patch and post are HTTP methods used in API testing to update and create resources, respectively.
• PATCH method is used to update an existing resource in the API

• POST method is used to create a new resource in the API

• Both methods are commonly used in RESTful APIs for CRUD operations

• Example: PATCH /api/users/123 to update user with ID 123

• Example: POST /api/users to create a new user
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Q3. Explain your automation framework
Ans. 
My automation framework is a data-driven framework using Selenium WebDriver and TestNG for test execution and reporting.
• Uses Selenium WebDriver for interacting with web elements

• Utilizes TestNG for test execution and reporting

• Follows a data-driven approach for test data management
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Q1. What is Class and object . explain hierarchial inheritence.
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Q2. Difference bertween deep copy and shallow copy.
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Q1. Array question from leetcode
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Q2. Stack question from leetcode
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Two problems each of array and stack

Data structure and algo questions from leetcode

Machine coding assignment

Q1. Design Content Delivery Network
Ans. 
Designing a Content Delivery Network (CDN) for efficient content distribution.
• Identify target audience and content types

• Select appropriate CDN providers based on needs (e.g. Akamai, Cloudflare)

• Implement caching strategies for static and dynamic content

• Optimize network routing for faster delivery

• Monitor performance and adjust as needed
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Q2. Design notification service
Ans. 
Design a notification service for sending alerts to users.
• Identify types of notifications (email, SMS, push notifications)

• Implement a notification queue to handle high volume of notifications

• Allow users to customize notification preferences

• Include monitoring and logging for tracking delivery status

• Consider scalability and reliability of the service
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Regex generator- used dp

Q1. LinkedList / Tree
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Q2. DP - Recursion - PnC
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Q1. Projects , Last Exp
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Q1. Introduction nd experience
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Q1. General questions
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Q1. Engineering questions. Problem solving
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1-1 with the HR head

Q1. Regular questions
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2 DSA questions one based on Bit manipulation and other one DP.

Q1. Was asked DBMS questions including 2 DSA questiosn one was sliding window LC Medium and other was easy array based questions
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