CGS QA Engineer Interview Questions and Answers

Current Technologies

Duration 1 hr, Coding,GK and English

Q1. Remove duplicates in string
Ans. 
Remove duplicates in a string array
• Iterate through the array and use a Set to store unique strings

• Convert the Set back to an array to get the final result
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Q2. Remove spaces in string
Ans. 
Remove spaces in a string
• Use string.replace() method with regex to replace spaces with empty string

• Alternatively, loop through each character in the string and build a new string without spaces

• Consider trimming the string first to remove leading and trailing spaces
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Q3. What is testing
Ans. 
Testing is the process of evaluating a system or application to identify defects or errors.
• Testing involves executing software to find bugs or issues.

• It ensures that the software meets the specified requirements.

• Types of testing include functional, performance, security, and regression testing.

• Examples of testing tools include Selenium, JUnit, and Postman.
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Q1. Strings remove duplicate and count
Ans. 
Remove duplicate strings in an array and count occurrences of each string.
• Iterate through the array and use a Set to remove duplicates.

• Use a HashMap to count occurrences of each string.

• Return the unique strings and their counts.
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Q1. Discussed about salary
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They told to write java program in string and collections

Q1. Different between test cases and test scenario
Ans. 
Test cases are specific conditions or inputs to test a particular functionality, while test scenarios are a sequence of test cases to test a broader functionality.
• Test cases are detailed steps to test a specific functionality, while test scenarios are a collection of test cases to test a broader functionality.

• Test cases are more granular and focus on individual functionalities, while test scenarios are more high-level ...read more
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Q2. Write a program to read from excel
Ans. 
A program to read data from an Excel file using a programming language.
• Use a library or module that supports reading Excel files, such as pandas in Python or Apache POI in Java.

• Open the Excel file and select the specific sheet or range of cells to read data from.

• Iterate through the rows and columns to extract the data and store it in an array of strings.
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Q1. Why you want to switch company
Ans. 
Seeking new challenges and growth opportunities in a more innovative environment.
• Desire for new challenges and learning opportunities

• Seeking a more innovative work environment

• Looking for career growth and advancement

• Interested in working with new technologies or methodologies
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Q1. What is STLC How Webdriver works
Ans. 
STLC stands for Software Testing Life Cycle. Webdriver is a tool used for automating web application testing.
• STLC is a process followed by QA teams to ensure software quality

• It includes planning, designing, executing and reporting of tests

• Webdriver is a popular tool for automating web application testing

• It uses a browser-specific driver to interact with web elements

• Webdriver supports multiple programming languages like
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Q1. What are OOPS concepts What is polymorphism
Ans. 
OOPS concepts are the principles of Object-Oriented Programming that help in creating modular and reusable code.
• Encapsulation: Binding data and functions together in a single unit called class

• Inheritance: Acquiring properties and behavior of a parent class by a child class

• Polymorphism: Ability of an object to take many forms. It can be achieved through method overloading and method overriding

• Abstraction: Hiding the imp...read more
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In Aptitude asked very common question in verbal quants.

Q1. In technical round tested coding knowledge
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Q1. Disscussed about salary package details
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