ZestMoney QA QC Engineer Interview Questions and Answers

Q1. What is Class and object . explain hierarchial inheritence.
Ans. 
Class is a blueprint for creating objects, while objects are instances of classes. Hierarchical inheritance is when a class inherits properties and behaviors from another class.
• Class is a template for creating objects with similar properties and behaviors

• Objects are instances of classes that have specific values for their properties

• Hierarchical inheritance is when a class inherits properties and behaviors from a parent...read more
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Q2. Difference bertween deep copy and shallow copy.
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Deep copy creates a new copy of an object with all nested objects also copied, while shallow copy creates a new object with references to the original nested objects.
• Deep copy duplicates all levels of nested objects, ensuring changes in the original object do not affect the copied object.

• Shallow copy only duplicates the top-level object, with nested objects being referenced, so changes in nested objects affect both the
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Q1. Regarding automation and asked me to automate a application.
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Q2. Do You Know Core Java
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Yes, I have knowledge of Core Java.
• I have a strong understanding of object-oriented programming concepts in Java.

• I am familiar with the Java syntax and can write and debug Java code.

• I have experience in using Java libraries and frameworks for test automation.

• I can create and execute test cases using Java-based testing tools like JUnit or TestNG.

• I am proficient in handling exceptions, file I/O, and multithreading in Jav
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Q1. Explain agile process
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Agile process is a software development methodology that emphasizes flexibility, collaboration, and iterative development.
• Iterative development with short cycles called sprints

• Frequent collaboration between cross-functional teams

• Continuous feedback and adaptation

• Prioritization of customer satisfaction and delivering working software

• Use of tools like Scrum, Kanban, or XP
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Q2. Explain scrum processs
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Scrum is an agile framework for managing work on complex projects.
• Scrum involves breaking down work into small, manageable tasks called user stories.

• It includes sprint planning, daily stand-up meetings, sprint review, and sprint retrospective.

• Scrum teams are self-organizing and cross-functional.

• The product backlog is a prioritized list of user stories.

• Sprints are time-boxed iterations, usually 2-4 weeks long.

• Scrum emph
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Q1. About experience you have and how you fit for same role
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Q1. What are your strengths and weaknesses?
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Q2. What are your salary expectations?
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Q3. Share details of your previous job.
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Q1. Leetcode medium question using heap
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Q2. MySQL Queries using joins, group by, aggregate functions
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Q1. Leetcode medium question of string
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Q2. Database design for the notification service
Ans. 
Design a database schema for a notification service
• Identify the entities involved such as users, notifications, and devices

• Create tables for each entity with relevant attributes

• Establish relationships between tables using foreign keys

• Consider indexing for efficient retrieval of notifications

• Implement a mechanism for tracking read/unread status of notifications
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Q1. Data Structure and algorithm
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Q2. System design question
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