Software Testing Interview Questions

Software Testing Basics

· In which Software Life cycle phase does testing occur?

· Can you explain PDCA cycle and where does testing fit?

· What is the difference between white box, black box and gray box testing?

· Define Defect?

· What is the difference between Defect and Failure?

· What are the broader categories of defects?

· What is the difference between Verification and Validation?

· How does testing affect risk?

· Does Increase in testing always mean good to the project?

· As a manager what process did you adopt to define testing policy?

· Should testing be only after build and execution?

· Are number of defects more in design phase or coding phase?

· What kind of inputs do we need from the end user to start proper testing?

· What is the difference between Latent and Masked Defect?

· A defect which could have been removed during initial stage is removed in later

stage how does it affect cost?

· In testing can you explain the concept of work bench?

· What's the difference between Alpha and Beta testing?

· Can you explain the concept of defect cascading?

· Can you explain how one defect leads to other defects?

· Can you explain what is Usability testing?

· What are the different strategies of rollout to the end users?

· Can you explain requirement traceability and its importance?

· What is the difference between Pilot and Beta testing?

· How will you do a risk analysis during software testing?

· How do you conclude which section is most risky in your application?

· What does entry and exit criteria mean in a project?

· On what basis is the Acceptance plan prepared?

· What's the relation between environment reality and test phases?

· What are different types of verifications?

· What's the difference between Inspections and Walkthroughs?

· Can you explain regression testing and confirmation testing?

· What do you mean by coverage and what are the different types of coverage

techniques?

· How does fundamentally a coverage tool work?

· What is configuration management?

· Can you explain the concept of baseline in software development?

· What are the different test plan documents in project?

· How do test documents in a project span across software development life cycle?

· Can you explain inventories?

· How do you do Analysis and design for testing projects?

· Can you explain calibration?

· Which test cases are first written white boxes or black box?

· Can you explain Co-habiting software?

· What different impact rating's you have used in your project?

· Can you explain what a test log is?

· Explain SDLC (Software development Life Cycle) in detail?

· Can you explain waterfall model?

· Can you explain big-bang waterfall model?

· Can you explain phased waterfall model?

· Explain Iterative model, Incremental model, Spiral model, Evolutionary model

and V-Model?

· Explain Unit testing, Integration tests, System testing and Acceptance testing?

· What's the difference between system and acceptance testing?

· Which is the best model?

· What group of teams can do software testing?

Testing techniques

· Can you explain boundary value analysis?

· What is BV in software testing?

· Can you explain Equivalence partitioning?

· Can you explain how state transition diagram can be helpful during testing?

· Can you explain random testing?

· Can you explain monkey testing?

· What is negative and positive testing?

· Can you explain exploratory testing?

· What exactly are semi-random test cases?

· Can you explain the concept of orthogonal array?

· Can you explain pair-wise defect fundamental?

· Can you explain the concept of decision tables?

· How did you define severity ratings in your project?

Software process

· What is a Software process?

· What are the different cost element involved in implementing process in an

organization?

· What is a model?

· What is maturity level?

· Can you explain the concept of process area in CMMI?

· Can you explain the concept of tailoring?

CMMI

· What is CMMI and what's the advantage of implementing CMMI in an

organization?

· What's the difference between implementation and Institutionalization?

· What are different models in CMMI?

· Can you explain staged and continuous models in CMMI?

· Can you explain the different maturity levels in staged representation?

· Can you explain capability levels in continuous representation?

· Which model should we use and under what scenarios?

· How many process areas are present in CMMI and in what classification do they

fall in?

· What the difference between every level in CMMI?

· What different sources are needed to verify authenticity for CMMI

implementation?

· Can you explain SCAMPI process?

· How is appraisal done in CMMI?

· Which appraisal method class is the best?

· Can you explain the importance of PII in SCAMPI?

· Can you explain implementation of CMMI in one of the Key process areas?

· Explanation of all process areas with goals and practices?

· Can you explain the process areas?

Six Sigma

· What is six sigma?

· Can you explain the different methodology for execution and design process in

SIX sigma?

· What does executive leaders, champions, Master Black belt, green belts and black

belts mean?

· What are the different kinds of variations used in six sigma?

· Can you explain the concept of standard deviation?

· Can you explain the concept of fish bone/ Ishikawa diagram?

· Can you explain QFD?

· Can you explain FMEA?

· Can you explain X bar charts?

· Can you explain Flow charting and brain storming?

Metrics

· What is meant by measure and metrics?

· Can you explain Number of defects measure?

· Can you explain number of production defects measure?

· Can you explain defect seeding?

· Can you explain DRE?

· Can you explain Unit and system test DRE?

· How do you measure test effectiveness?

· Can you explain Defect age and Defect spoilage?

Automated Testing

· What are good candidate for automation in testing?

· Does automation replace manual testing?

· Which automation tool have you worked and can you explain them in brief?

· Can you explain how does load testing conceptually work for websites?

· Can you explain how did you perform load testing using tool?

· What does load test summary report contain?

· Can you explain the concept of data-driven testing?

· Can you explain table-driven testing?

· How can you perform data-driven testing using Automated QA?

Testing Estimation

· What are the different ways of doing black box testing?

· Can you explain TPA analysis?

· Can you explain in brief Function points?

· Can you explain the concept Application boundary?

· Can you explain the concept of elementary process?

· Can you explain the concept of static and dynamic elementary process?

· Can you explain concept of FTR, ILF, EIF, EI, EO, EQ and GSC?

· How can you estimate number of acceptance test cases in a project?

· Can you explain on what basis does TPA actually work?

· How did you do estimation for black box testing?

· How did you estimate white box testing?

· Is there a way to estimate acceptance test cases in a system?

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