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01

What is software testing and why is it important?

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Software testing evaluates and verifies that software applications meet requirements and function correctly through manual or automated execution.

Importance:

  • Quality Assurance: Ensures software meets quality standards
  • Risk Mitigation: Identifies defects before production
  • Cost Reduction: Early bug detection is less expensive
  • User Satisfaction: Better user experience and reliability
  • Compliance: Meets regulatory and business requirements
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02

Explain the difference between verification and validation.

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Verification answers "Are we building the product right?"

  • Static process of checking documents, design, code without executing
  • Reviews, walkthroughs, inspections
  • Ensures the product meets specifications

Validation answers "Are we building the right product?"

  • Dynamic process involving actual execution of code
  • Testing the actual software against user requirements
  • Ensures the product meets user needs and expectations

Example: Verification checks if login form has username/password fields as per design. Validation tests if users can actually log in successfully.

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03

What are the different levels of testing?

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The four main levels of testing are:

  1. Unit Testing: Testing individual components or modules in isolation
  2. Integration Testing: Testing interfaces between integrated components
  3. System Testing: Testing the complete integrated system
  4. Acceptance Testing: Final testing to determine if system meets business requirements

Each level has specific objectives and is typically performed by different roles (developers, testers, users).

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04

What is the difference between static and dynamic testing?

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Static Testing:

  • Testing without executing code
  • Reviews, walkthroughs, inspections
  • Code analysis tools, syntax checking
  • Early defect detection
  • Examples: Code reviews, requirement reviews

Dynamic Testing:

  • Testing by executing code
  • Functional and non-functional testing
  • Requires test environment
  • Runtime behavior validation
  • Examples: Unit testing, system testing, performance testing
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05

Explain positive and negative testing with examples.

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Positive Testing: Testing with valid inputs to verify system works as expected

  • Example: Login with correct username/password should succeed

Negative Testing: Testing with invalid inputs to verify system handles errors gracefully

  • Example: Login with wrong password should show appropriate error message

Both are essential for comprehensive testing coverage.

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06

What is the difference between functional and non-functional testing?

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Functional Testing: Verifies what the system does

  • Tests specific business requirements
  • Examples: Unit, integration, system, acceptance testing
  • Focus on functionality, features, and user interactions

Non-Functional Testing: Verifies how the system performs

  • Tests quality attributes
  • Examples: Performance, security, usability, scalability testing
  • Focus on system behavior under various conditions
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07

What are the advantages and disadvantages of test automation?

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Advantages:

  • Faster execution
  • Reusable test scripts
  • Better accuracy
  • Cost-effective for regression testing
  • 24/7 execution capability
  • Better resource utilization

Disadvantages:

  • High initial investment
  • Maintenance overhead
  • Cannot automate exploratory testing
  • Tool dependencies
  • Requires skilled resources
  • Not suitable for frequently changing UI
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08

What is the difference between QA and QC?

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09

Explain test case design and test case components.

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10

What tools are used for API testing?

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Intermediate 31
11

Explain the Software Testing Life Cycle (STLC).

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12

Explain white box, black box, and gray box testing.

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13

What is regression testing and when is it performed?

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14

Explain smoke testing and sanity testing.

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15

What is API testing and why is it important?

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16

Explain database testing and its key aspects.

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17

Explain equivalence partitioning with an example.

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18

What is boundary value analysis?

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19

Explain decision table testing.

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20

What is the test automation pyramid?

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21

How do you select test cases for automation?

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22

What is Page Object Model (POM)?

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23

Explain data-driven testing.

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24

Explain the concept of shift-left testing.

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25

What are quality gates in software testing?

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26

What is test planning and what does a test plan contain?

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27

What is defect life cycle?

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28

Explain test execution and test reporting.

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29

What is performance testing and its types?

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30

Explain load testing vs stress testing.

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31

What are key performance testing metrics?

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32

What is security testing and its key areas?

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33

What are the key aspects of API testing?

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34

How do you test RESTful APIs?

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35

What are the key challenges in mobile testing?

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36

Explain the difference between native, web, and hybrid mobile app testing.

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37

What mobile testing tools are commonly used?

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38

What is agile testing and how does it differ from traditional testing?

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39

Explain the role of a tester in agile teams.

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40

What are important test metrics and how are they calculated?

Part of Pro
41

What should be included in a test summary report?

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Expert 9
42

What is state transition testing?

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43

What is keyword-driven testing?

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44

What is risk-based testing?

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45

Explain SQL injection and how to test for it.

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46

What is cross-site scripting (XSS) and how to test for it?

Part of Pro
47

What is behavior-driven development (BDD) and how does it help testing?

Part of Pro
48

How do you measure test effectiveness?

Part of Pro
49

What is shift-right testing and how does it complement shift-left?

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50

How do you implement continuous testing in DevOps pipelines?

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