Have you ever been asked in a QA interview:
- Why Do Interviewers Ask Production Bug Questions?
- 1. Real-Time Production Bug Interview Questions: A Critical Production Bug
- 2. How Do You Decide the Severity of a Production Bug?
- 3. What Is the Difference Between Severity and Priority?
- 4. A Bug Cannot Be Reproduced in Your Environment. What Will You Do?
- 5. What Would You Check First When a Production Bug Is Reported?
“A critical bug is found in production. What will you do?”
This sounds like a simple question.
But the interviewer is not only checking whether you know testing concepts.
They want to understand how you think under pressure.
A production bug can involve customers, business teams, developers, DevOps, support teams, and management. As a QA, you need to know how to investigate, communicate, prioritize, validate, and prevent the issue from happening again.
In this guide, you’ll find real-time production bug interview questions with practical scenarios and sample answers to help you prepare for QA interviews.
Why Do Interviewers Ask Production Bug Questions?
Production-bug questions help interviewers evaluate your:
- Problem-solving skills
- Debugging approach
- Risk assessment
- Communication skills
- Knowledge of Severity and Priority
- Understanding of RCA
- Regression testing approach
- Hotfix validation skills
- Ability to work under pressure
- Understanding of the complete defect lifecycle
A strong QA should not simply say:
“I will raise a bug.”
Instead, explain what you will check, whom you will inform, how you will validate the fix, and how you will prevent recurrence.
1. Real-Time Production Bug Interview Questions: A Critical Production Bug
Scenario
A customer reports that they are unable to complete a payment in production.
What would you do?
Sample Answer
First, I would understand and reproduce the issue if possible.
I would collect important information such as:
- User/account details
- Steps to reproduce
- Error message
- Timestamp
- Browser/device
- Environment
- Screenshots or logs
- Transaction/order ID, if applicable
Then I would assess the business impact and severity.
If the issue is affecting many users or blocking a critical business transaction, I would immediately inform the relevant stakeholders.
I would work with developers and the support/DevOps team to identify the cause.
If a hotfix is released, I would validate:
- The reported issue
- The affected functionality
- Critical related functionality
- Important regression scenarios
Finally, I would participate in the Root Cause Analysis (RCA) to understand why the defect escaped to production.
Interview Tip
Don’t stop at:
“I will create a defect.”
Show the interviewer that you understand the complete production incident lifecycle.
2. How Do You Decide the Severity of a Production Bug?
Severity represents the impact of the defect on the application or business.
For example:
Critical Severity
Payment is failing for all users.
High Severity
Users cannot place orders.
Medium Severity
A particular feature is not working, but users have an alternative way to complete the task.
Low Severity
A minor UI alignment issue exists.
However, severity should be evaluated based on the actual business and technical impact, not simply because the bug is found in production.
3. What Is the Difference Between Severity and Priority?
This is one of the most common QA interview questions.
Severity
Severity indicates how seriously the defect impacts the system.
Priority
Priority indicates how urgently the defect should be fixed.
Example
A company website has a spelling mistake in its homepage banner during a major marketing campaign.
It may have:
Severity: Low
Priority: High
Why?
The application still works, but the business may want the issue fixed immediately because it is highly visible to customers.
Interview Tip
Remember:
Severity = Impact
Priority = Urgency
For a broader understanding of software testing concepts, QA professionals can also refer to the official ISTQB website
4. A Bug Cannot Be Reproduced in Your Environment. What Will You Do?
This is a very realistic production scenario.
First, I would not immediately close the issue as “Not Reproducible.”
I would collect more information.
I would check:
- Exact production steps
- User data
- Browser and version
- Device/OS
- Application version
- Timestamp
- Logs
- Network requests
- Database information, if accessible
- Feature flags/configuration
- Third-party integrations
I would also compare the production environment with the test environment.
If required, I would work with developers, DevOps, and support teams to investigate the issue.
Key Point
Not reproducible does not automatically mean not a bug.
5. What Would You Check First When a Production Bug Is Reported?
I would start by understanding the business impact and scope.
My initial checklist would be:
1. What is failing?
2. Who is affected?
3. How many users are affected?
4. Can the issue be reproduced?
5. Is there a workaround?
6. Is customer data or money at risk?
7. Is the issue intermittent or consistent?
8. When did the issue start?
9. Was there a recent deployment or configuration change?
This helps determine the appropriate response quickly.