GuruCul QA Engineer Interview Questions and Answers

Logical + Quantitative questions +subjective round for QA -> questions to figure the mistake in designs

Q1. 100 apples in 5 consecutive days, each day 6 more than the previous day, how many apples were eaten on the first day
Ans. 8 + 14 + 20 + 26 + 32 = 100 -> Ans: 8
Answered by Prachi Jain
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Q2. 80 pairs of socks in a dark room, 40 black, 40 white, how many minimum number of socks need to be taken out to get 15 pairs of socks
Ans. 
Minimum 31 socks need to be taken out to get 15 pairs of socks
• To get 15 pairs of socks, you need to have 30 socks of different colors

• After taking out 30 socks, the next sock you take out will complete the 15 pairs

• So, minimum 31 socks need to be taken out to get 15 pairs of socks
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Q3. 11 mins hourglass and 7 mins hourglass, use them both to calculate 15 mins
Ans. 1. use both 11 and 7 at same time and stop as 7 empties on one side -> total = 7 and 11 mins divided in 4 + 7 2. flip 7 mins glass and let 4 mins emptied, stop as 4 mins passes -> total = 7 + 4 = 11 and 7 mins divided in 3 + 4 3. let 4 mins pass -> total = 7 + 4 + 4 = 15 mins
Answered by Prachi Jain
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Q4. Tell me about yourself
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Q5. Why Quality Assurance
Ans. 
Quality Assurance ensures that products meet high standards and customer expectations.
• Ensures product quality and reliability

• Identifies and fixes defects early in the development process

• Increases customer satisfaction and trust in the product

• Reduces risks and costs associated with product failures
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Q1. Tell me about yourself
Ans. 
QA Engineer with 5 years of experience in software testing, automation, and a passion for delivering high-quality products.
• Experienced in manual and automated testing, using tools like Selenium and JUnit.

• Strong background in Agile methodologies, participating in daily stand-ups and sprint planning.

• Proficient in writing test cases and bug reports, ensuring clear communication with development teams.

• Worked on a project t...read more
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Q2. Pen weight = 2 kg + 1/2 of its own weight -> what is the weight of pen?
Ans. 
The weight of the pen is 4 kg.
• To find the weight of the pen, we can set up the equation: pen weight = 2 kg + 1/2 of its own weight

• Let x be the weight of the pen. The equation becomes: x = 2 + 1/2 * x

• Solving for x, we get x = 4 kg
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Q3. 3 boxes with apples, oranges, apples + oranges --> labels are jumbled that is each box is labeled incorrectly, least number of steps required to correct the labels, considering each fruit we pick out is on...read more
Ans. 
To correct the labels on 3 boxes with jumbled fruit labels, the least number of steps required is 2.
• Pick a fruit from the box labeled 'apples + oranges', since it must contain both fruits.

• Then pick a fruit from the box labeled 'oranges', as it cannot contain apples.
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Q4. When designing an online carrom game, if the game is paused in between and then resumed again, what all things need to be saved?
Ans. 
When designing an online carrom game, the saved data when the game is paused and resumed should include player scores, positions of coins, game state, and timer status.
• Player scores should be saved to ensure continuity.

• Positions of coins on the board should be saved to resume the game accurately.

• Game state (such as whose turn it is) should be saved to maintain the flow.

• Timer status should be saved to resume the game wi...read more
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Q5. Two jugs -> 5L and 3L -> fill 4L using only them, while wasting the least amount of water
Ans. 1. fill 5L and empty it in 3L ---> 5L has 2L and 3L has 3L 2. empty 3L ---> 5L has 2L and 3L has 0L 3. empty 5L into 3L ---> 5L has 0L and 3L has 2L 4. fill 5L to the top ---> 5L has 5L and 3L has 2L 5. fill 3L till full using 5L ---> 5L has 4L and 3L has 3L
Answered by Prachi Jain
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Q1. About your experience.
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Q2. Tell your experience
Ans. 
I have 5 years of experience in QA roles, focusing on test automation, regression testing, and defect tracking.
• Experience in test automation using tools like Selenium and JUnit

• Proficient in regression testing to ensure software quality

• Skilled in defect tracking and reporting using tools like Jira

• Collaborated with development teams to resolve issues and improve product quality
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Q1. Write scenarios on banking application
Ans. 
Scenarios on banking application for QA testing
• 1. User login with valid credentials

• 2. User login with invalid credentials

• 3. Transfer funds between accounts

• 4. Check account balance

• 5. Update personal information
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Q2. Write sql queries
Ans. 
SQL queries for QA Engineer interview
• Use SELECT statement to retrieve data from database

• Use WHERE clause to filter data based on specific conditions

• Use JOIN clause to combine data from multiple tables

• Use GROUP BY clause to group data based on specific columns

• Use ORDER BY clause to sort data in ascending or descending order
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Q1. Basic questions
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Q1. What is the D/B verification and validation in QA?
Ans. 
D/B verification and validation in QA refers to the process of ensuring that data in a database is accurate, complete, and consistent.
• Verification involves checking if the data in the database matches the expected values or rules.

• Validation involves ensuring that the data in the database meets the specified requirements and is reliable.

• Examples include verifying that user information is correctly stored in a database a...read more
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Q2. Verification : ensures the product is being built correctly (meet design specifications). Validation : ensures the right product is built (meets user needs and requirements).
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Q1. What is JMeter?
Ans. 
JMeter is an open-source tool used for performance testing and load testing of web applications.
• JMeter allows testers to simulate heavy loads on servers, networks, or objects to test their strength and analyze overall performance.

• It can be used to measure performance under different load types, such as stress testing, spike testing, and endurance testing.

• JMeter supports various protocols like HTTP, HTTPS, FTP, JDBC, LD...read more
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Q1. What is Cucumber and Karate?
Ans. 
Cucumber and Karate are testing frameworks used for behavior-driven development (BDD) and API testing, respectively.
• Cucumber is a BDD tool that allows writing test cases in plain English using Gherkin syntax

• Karate is an API testing tool that combines API testing, test doubles, performance testing, and UI automation in one framework

• Both tools support automation testing and help in collaboration between technical and non...read more
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Q1. What is the main responsibility of a QA Engineer?
Ans. 
The main responsibility of a QA Engineer is to ensure the quality of software products by testing and identifying defects.
• Creating test plans and test cases

• Executing test cases and reporting defects

• Collaborating with developers to resolve issues

• Automating test cases using tools like Selenium

• Performing regression testing to ensure software stability
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Q2. Ensure software quality through testing.
Ans. 
Ensuring software quality through testing involves thorough testing of all functionalities to identify and fix any bugs or issues.
• Create test cases to cover all functionalities of the software

• Perform manual and automated testing to identify bugs

• Regression testing to ensure new changes do not impact existing functionalities

• Use tools like Selenium, JUnit, or TestNG for automated testing

• Collaborate with developers to fix ...read more
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Easy aptitude questions based on logical reasoning and basic maths.

Easy logic-based question based on arrays and strings with some javascript output-based questions.

Discussion about the projects that I made in college and the tech stack I know.
1 basic array/string-based problem.