Updated August 13, 2026
Organizations follow a set of procedures known as Quality Control (QC) to ensure the efficient delivery of high-quality products that meet customer demands and satisfaction. International standards serve as a reference for these procedures, which guarantee the quality output of software systems or products. Different parameters considered for Software Quality include functional and non-functional requirements, which directly and indirectly affect the product, such as performance, usability, and supportability. During product performance, handling unexpected scenarios and evaluating error rates are key considerations.
Software Quality Assurance is different from Software Quality Control as software quality assurance encompasses the various standards and processes for the stable maintenance of the quality of the products, e.g., software deliverables, processes, and documentation, reducing the number of defects, etc. In contrast, software quality control is a form of artifact compliance validation against established requirements to identify defects.
If you are looking for a job related to Quality Control, you must prepare for the 2023 Quality Control Interview Questions. Every interview is indeed different depending on the various job profiles. Here, we have prepared the critical Quality Control Interview Questions and Answers to help you succeed in your interview.
In this 2023 Quality Control Interview Questions article, we shall present the ten most important and frequently asked Quality Control Interview questions. We can divide these questions into two parts as follows:
Quality Control Interview Questions (Basic)
This first part covers basic Interview Questions and Answers.
Q1. What is Software Quality Control, and what are its benefits?
Answer:
Software Quality Control comprises a set of standard procedures followed by organizations, institutes, or international groups based on reference standards. These procedures aim to ensure the delivery of efficient and high-quality products that meet customer satisfaction and requirements. The several benefits of Software Quality Control are as follows –
- Improves software quality, reliability, and stability.
- Identifies defects early in the development lifecycle.
- Reduces the cost and impact of defects.
- Improves test coverage and traceability.
- Helps verify functional and non-functional requirements.
- Supports faster and safer software releases.
- Improves customer satisfaction and confidence.
- Reduces production failures and regression issues.
- Supports continuous testing in CI/CD pipelines.
- Provides measurable quality information for release decisions.
Q2. What are the different steps or processes involved in the Quality Control Procedure?
Answer:
This is a basic Quality Control interview question. The Quality Control Procedure involves several steps, including reviewing and testing the product according to the requirements. The steps involved in the Review and Testing phases are mentioned below–
Reviewing Phase:
- Requirement analysis and validation
- Acceptance criteria review
- Risk identification and assessment
- Test strategy and test planning
- Test environment planning
- Test data preparation
- Test case and test scenario design
- Traceability between requirements and tests
- Code review and static analysis
Testing Phase:
- Unit Testing
- Integration Testing
- System Testing
- System Integration Testing
- Non-Functional Testing
- User Acceptance Testing
- API and service testing
- Functional testing
- Regression testing
- Security testing
- Performance testing
- Compatibility testing
- Exploratory testing
Release and Monitoring Phase:
- Defect verification and closure
- Regression validation
- Release-readiness assessment
- Production smoke testing
- Monitoring and incident feedback
- Root-cause analysis
- Continuous quality improvement
Q3. What are the different types of Quality Control Parameters available in Software QC?
Answer:
The different types of Quality Control Parameters available in Software Quality Control are Products, processes, and Resources, which are explained below:
- Products: The products refer to the customer’s actual requirements, which need to be delivered without any defects.
- Processes: The processes define the rules or procedures that should be followed during the testing of the software system or product, ensuring the delivery of the best product. The set of processes will enable the testing procedure to be carried out efficiently, testing the complete product without missing any functional or non-functional deficiencies per the customer’s required specifications.
- Resources: Resources to be deployed should be very efficient in terms of the team, tools, or technologies used. Depending on the project’s budget, one can execute the testing procedure automatically or manually. If manual processes are used, efficient resources should be available within the team to avoid manual errors or defects. In contrast, Automated testing also needs a technical professional to be deployed.
Q4. What are the different types of Quality Control Processes involved?
Answer:
A commonly used Quality Control improvement approach is PDCA (Plan-Do-Check-Act). It provides a continuous improvement cycle rather than treating quality as a one-time testing activity.
- Plan: In this stage, we follow and consolidate all Quality Control processes into a single test coverage document or a Test Plan Document.
- Do: This stage defines all Quality Control processes as parameters for developing the Quality Standards.
- Check: This is a stage where all Quality Control processing parameters meet the prescribed quality standards.
- Act: This stage involves taking necessary actions to ensure quality, repeating them if necessary, and implementing corrective actions.
Q5. What types of testing are performed as part of Quality Control processes?
Answer:
Software Quality Control can include many types of testing depending on the application’s requirements, architecture, risks, and business objectives.
Common testing types include:
- Unit Testing
- Functional Testing
- Integration Testing
- System Testing
- System Integration Testing
- API Testing
- Regression Testing
- Smoke Testing
- Sanity Testing
- User Acceptance Testing
- End-to-End Testing
- Exploratory Testing
- Performance Testing
- Load Testing
- Stress Testing
- Volume Testing
- Security Testing
- Usability Testing
- Accessibility Testing
- Compatibility Testing
- Installation and Upgrade Testing
- Recovery Testing
- Reliability Testing
- Mobile and Cross-Browser Testing
- Database Testing
- Continuous Testing in CI/CD pipelines
Quality Control Interview Questions (Advanced)
Let us now look at advanced Quality Control Interview Questions and Answers relevant to current software development and testing environments.
Q6. What are the different characteristics of Quality Control?
Answer:
The different characteristics of Quality Control are described below:
- Requirement-focused: Testing should verify that the software meets defined requirements and acceptance criteria.
- Defect prevention and detection: QC should identify defects as early as possible.
- Measurable: Quality should be evaluated using meaningful metrics and evidence.
- Continuous: Quality activities should continue throughout the software lifecycle.
- Risk-based: Testing effort should be prioritized according to business and technical risks.
- Traceable: Requirements, test cases, execution results, and defects should be traceable.
- Repeatable: Testing and quality processes should produce consistent results.
- Customer-focused: The final product should satisfy user and business expectations.
- Automation-friendly: Repetitive and regression activities should be automated where practical.
- Continuous-improvement oriented: Defects and incidents should be used to improve development and testing processes.
Q7. What are the different factors involved in the Software Quality Control of a System or Product, and explain them?
Answer:
The different factors involved in the Software Quality Control of a System or a Product are such as Usability, Portability, Maintainability, Reliability, and Efficiency, which are explained below –
- Usability: Ease of using the software.
- Portability: To be able to use in different locations or environments.
- Maintainability: Ease of maintenance and upgrading functionalities.
- Reliability: Long reliability without any downtime or defects
- Efficiency: To be able to meet the requirements efficiently.
- Compatibility: Ability to work and exchange information with other systems.
- Interaction Capability: Ability to help users interact and complete tasks effectively.
- Security: Ability to protect data and systems from unauthorized access and threats.
- Flexibility: Ability to adapt to changing requirements and environments.
- Safety: Ability to operate without causing unacceptable risks.
Q8. What are the Quality Control characteristics according to the latest ISO/IEC 25010 standard?
Answer:
Below are the Quality Control characteristics described according to ISO standards:-
- Functional Suitability – Ensures the software provides the required functions accurately and completely.
- Performance Efficiency – Measures how well the software performs while using available resources.
- Compatibility – Ensures the software can work and exchange information with other systems.
- Interaction Capability – Measures how easily and effectively users can interact with the software.
- Reliability – The ability of the software to perform required functions consistently under specified conditions.
- Security – Protects software, data, and information from unauthorized access or harmful actions.
- Maintainability – Indicates how easily the software can be analyzed, updated, corrected, and maintained.
- Flexibility – Shows how easily the software can adapt to changing requirements, environments, or situations.
- Safety – The ability to operate without creating unacceptable risks to people, property, or the environment.
Q9. What are the different Software Control Views?
Answer:
This is the most-asked Quality Control interview question. These are the Different Software Control Views
- User View: Covers usability, functionality, performance, reliability, security, and overall user experience.
- Product View: Evaluates software quality characteristics and measurable product attributes.
- Development View: Addresses maintainability, testability, architecture, code quality, and ease of modification.
- Business/Value View: Measures business value, customer satisfaction, risk reduction, and organizational objectives.
Q10. What is the best tool available for QC?
Answer:
The best tool available for Quality Control is HP ALM (Application Lifecycle Management), a product of HPE, used as a test management tool.
- Test Management: Jira with test-management applications, OpenText ALM/Quality Center, OpenText ALM Octane, TestRail, Xray, and Zephyr.
- Defect and Work Management: Jira and Azure DevOps.
- UI Automation: Selenium, Playwright, and Cypress.
- API Testing: Postman and REST-assured.
- Performance Testing: Apache JMeter and Gatling.
- Code Quality and Static Analysis: SonarQube and similar code-analysis platforms.
- CI/CD: Jenkins, GitHub Actions, GitLab CI/CD, and Azure Pipelines.
- Mobile Testing: Appium and cloud-based device testing platforms.
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