Pegasystems Senior QA Engineer Interview Questions and Answers

Q1. Given a String contains only 0s, 1s and 2s, count the number of sub strings that have equal number of 0s, 1s, and 2s. Input : str = "0102010" output : 2. Very Hard question is being asked in interview for...read more
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Count the number of substrings with equal number of 0s, 1s, and 2s in a given string.
• Iterate through the string and maintain counts of 0s, 1s, and 2s encountered so far.

• Keep track of the counts in a hashmap and increment the count of substrings whenever counts of 0s, 1s, and 2s are equal.

• Return the total count of substrings at the end.
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Q2. Group of anagrams together. input : ["eat", "tea", "tan", "ate", "nat", "bat"] output : [["eat" ,"tea", "ate"],["tan", "nat"],["bat"]] This is another hard level question is asked in interview for the QA p...read more
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Group anagrams together in an array of strings.
• Create a hashmap to store sorted strings as keys and corresponding anagrams as values.

• Iterate through the input array, sort each string, and add it to the hashmap.

• Return the values of the hashmap as the grouped anagrams.
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Q1. Java related qs
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Q1. Questions on whole QA Testing, Windows
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Q2. Types of testing
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Types of testing include functional testing, non-functional testing, manual testing, automated testing, regression testing, and performance testing.
• Functional testing: Testing the functionality of the software against the requirements.

• Non-functional testing: Testing aspects like performance, usability, and security.

• Manual testing: Testing performed manually by QA engineers.

• Automated testing: Testing performed using aut...read more
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Q3. How to test a particular scenario
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To test a particular scenario, create test cases covering all possible inputs and expected outcomes.
• Identify the specific scenario to be tested

• Create test cases for different inputs and expected outcomes

• Execute the test cases and analyze the results

• Perform regression testing to ensure no new issues are introduced
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Q4. Bugs validation
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Simple coding on python

Q1. What is oops ?
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Object-oriented programming paradigm that focuses on objects and classes for code organization and reusability.
• Encapsulation: bundling data and methods that operate on the data into a single unit (object)

• Inheritance: ability of a class to inherit properties and behavior from another class

• Polymorphism: ability to present the same interface for different data types

• Abstraction: hiding the complex implementation details an
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Q2. Method overloading and overriding
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Q1. What is the STLC, bug severity priority, waits in selenium with syntax, Java oops question with example,
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STLC, bug severity priority, waits in Selenium, Java OOPs
• STLC stands for Software Testing Life Cycle and includes phases like requirement analysis, test planning, test design, test execution, and test closure

• Bug severity is the impact of a bug on the system, while bug priority is the order in which bugs should be fixed

• Waits in Selenium are used to make the test script wait for a certain condition to be met before proce...read more
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Q1. Programs on java agile process selenium webdriver methods and architecture
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Q1. Scenario based questions
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Q1. What is tdd in it
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TDD stands for Test-Driven Development, a software development process where tests are written before the code.
• Tests are written before the actual code implementation

• Code is then written to pass the tests

• Helps in ensuring code quality and functionality

• Promotes writing modular and testable code
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Q2. What is class inheritance
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Class inheritance is a concept in object-oriented programming where a class inherits attributes and methods from another class.
• Allows a class to inherit properties and behaviors from another class

• Promotes code reusability and reduces redundancy

• Derived class can add new features or override existing ones

• Example: Class 'Car' can inherit from class 'Vehicle' and inherit properties like 'color' and methods like 'drive'
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Q3. Why pytest fixtures are used
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Pytest fixtures are used to set up preconditions for tests, share resources, and reduce code duplication.
• Fixtures help in setting up preconditions for tests, such as creating test data or initializing objects.

• They allow for sharing resources across multiple tests, reducing code duplication.

• Fixtures can be used to simulate real-world scenarios, like setting up a database connection or mocking external services.

• They prov...read more
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Q1. Testng priority and annotations
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Q2. Multiple inheritance
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Q3. Hashing concept
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