CARS24 QA Engineer Interview Questions and Answers

Q1. Questions related to SQL, Manual concepts, test cases, Automation
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Q1. SQL queries, Real-time scenarios, Manual and automation concepts, Java concepts
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Q1. About company and salary
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Q1. What is the difference between cache and cookies?
Ans. 
Cache stores temporary data for faster access, while cookies store user-specific data for tracking and personalization.
• Cache is used to speed up web page loading by storing static resources like images and scripts.

• Cookies are small text files stored on the user's device to remember user preferences and sessions.

• Example of cache: A web browser caching images so they don't need to be downloaded again.

• Example of cookies: ...read more
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Q2. Will deleting cookies impact the device?
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Deleting cookies primarily affects web browsing experience, not the device itself.
• Cookies store user preferences and session information, so deleting them may log you out of websites.

• For example, if you delete cookies from an e-commerce site, you may lose your shopping cart items.

• Cookies can also store tracking information, so deleting them may reset targeted ads.

• However, deleting cookies does not affect device perform...read more
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Q3. What is the difference between severity and priority, and can you provide an example of a high-severity issue that has low priority?
Ans. 
Severity refers to the impact of a defect, while priority indicates its urgency for fixing.
• Severity is about the impact on the system; for example, a crash is high severity.

• Priority is about the urgency of fixing the issue; for example, a typo in a non-critical report.

• A high-severity issue with low priority could be a crash in a rarely used feature.

• Another example is a security vulnerability in a feature that is not cu...read more
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Q4. What are the differences between PUT, POST, and PATCH methods in API testing?
Ans. 
PUT, POST, and PATCH are HTTP methods used for sending data to APIs, each serving different purposes in resource management.
• PUT: Used to update or replace a resource at a specific URI. Example: PUT /users/1 updates user with ID 1.

• POST: Used to create a new resource. Example: POST /users creates a new user.

• PATCH: Used to apply partial modifications to a resource. Example: PATCH /users/1 updates only the email of user wi...read more
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Q5. What do HTTP status codes 201 and 500 signify?
Ans. 
HTTP status code 201 indicates successful resource creation, while 500 signifies a server error.
• 201 Created: Indicates that a request has been fulfilled and a new resource has been created.

• Example of 201: When a user registers on a website, the server responds with 201 if the account is successfully created.

• 500 Internal Server Error: Indicates that the server encountered an unexpected condition that prevented it from f...read more
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Q6. Difference between Authentication and Authorization?
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Authentication verifies identity; authorization determines access rights.
• Authentication is the process of verifying who a user is.

• Authorization is the process of determining what a user can do.

• Example of authentication: Logging in with a username and password.

• Example of authorization: A user with admin rights can access all files, while a regular user cannot.
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Q7. What are the different types of locators available in Selenium? Please list them.
Ans. 
Selenium provides various locators to identify web elements for automation testing.
• 1. ID: Locates elements by their unique ID attribute. Example: driver.findElement(By.id('username'));

• 2. Name: Locates elements by their name attribute. Example: driver.findElement(By.name('password'));

• 3. Class Name: Locates elements by their class attribute. Example: driver.findElement(By.className('btn-submit'));

• 4. Tag Name: Locates ele...read more
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Q8. What is the difference between Web.driver.close() and Web.driver.quit()?
Ans. 
Web.driver.close() closes the current browser window, while Web.driver.quit() closes all browser windows and ends the WebDriver session.
• Web.driver.close() only closes the active window, leaving other windows open.

• Example: If you have multiple tabs open, close() will only close the tab in focus.

• Web.driver.quit() terminates the entire WebDriver session, closing all windows.

• Example: After running tests, quit() ensures all...read more
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Q9. Different types of applications in Mobiles?
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Mobile applications can be categorized into various types based on their functionality and technology.
• Native Apps: Built for specific platforms (e.g., iOS, Android) using platform-specific languages (e.g., Swift, Kotlin).

• Web Apps: Accessed via browsers, responsive to different screen sizes (e.g., Google Docs, Facebook).

• Hybrid Apps: Combine elements of both native and web apps, using frameworks like Ionic or React Nativ...read more
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Q1. Write an SQL query to find the 2nd largest salary
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Q2. Write test cases of Login API
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Q3. In Jmeter, what is Rampup period
Ans. 
Rampup period in JMeter is the time taken for all virtual users to start executing the test plan.
• Rampup period is specified in seconds in JMeter test plan settings.

• During the rampup period, JMeter gradually starts all virtual users to avoid overwhelming the server.

• For example, if rampup period is set to 60 seconds and number of threads is 100, JMeter will start 1 thread every 0.6 seconds.
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Q4. Difference between cookie and cache
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Cookies are small pieces of data stored on the client side, while cache is temporary storage of web documents on the server or client side.
• Cookies are used to store user-specific information like login credentials, preferences, etc.

• Cache is used to store frequently accessed web documents to reduce loading times.

• Cookies are sent with every HTTP request, while cache is used to store resources locally to reduce server loa...read more
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Q5. API vs Webservice
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API is a general term for any set of rules that allow different software applications to communicate with each other. A web service is a type of API that is accessed over a network.
• API is a set of rules and protocols that allow different software applications to communicate with each other.

• Web service is a type of API that is accessed over a network, typically using HTTP.

• API can be used for various purposes like access...read more
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Q6. Write a program to find a prime number
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Q7. Write a program to find the factorial
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Q1. What is Smog Testing
Ans. 
Smog testing is a process to measure the amount of pollutants emitted by vehicles to ensure they meet environmental standards.
• Smog testing is also known as emissions testing or vehicle inspection.

• It is typically required by law to ensure vehicles are not emitting excessive pollutants into the air.

• The testing process usually involves measuring the levels of pollutants such as carbon monoxide, hydrocarbons, and nitrogen ...read more
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Q2. What is SDLC lifecycle
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Q1. Given was a case study of lift, need to make test cases regarding that.
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Q1. What is your marital status, family and current job.
Ans. 
Married with two children, currently working as a QA Engineer.
• Married with two children

• Currently working as a QA Engineer
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Q1. How do you perform regression testing in complex feature
Ans. 
Regression testing in complex features involves identifying critical test cases, automating tests, and executing them regularly.
• Identify critical test cases that cover the main functionalities of the complex feature

• Automate these test cases to ensure efficient and consistent testing

• Execute regression tests regularly to catch any potential issues or regressions

• Use tools like Selenium, JUnit, or TestNG for automation and...read more
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Q1. Salary Questions were asked
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Q2. Salaryyy questions were asked
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Q1. They ask about over self and about family
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Q2. And common question about customer service and skill and responsibilities
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