SQA MCQs with answers are essential for computer science students, QA engineers, software developers, and competitive exam preparation (PPSC, FPSC, NTS). If you are looking for reliable SQA MCQs, this comprehensive set of SQA MCQs covers software testing techniques, bug life cycle, black-box testing, white-box testing, and quality assurance metrics. Mastering these SQA MCQs helps build core software engineering skills and achieve high test scores in every exam. Practicing these SQA MCQs regularly will boost your technical testing knowledge.

Table of Contents

Part 1: Fundamentals of Software Testing & QA

Question 1: What does SQA stand for in software engineering?

  • A) Software Quality Architecture
  • B) Software Quality Assurance
  • C) System Quality Analysis
  • D) Software Quantitative Assessment

Correct Answer: B) Software Quality Assurance

Question 2: What is the primary difference between Software Quality Assurance (SQA) and Software Testing?

  • A) SQA is process-oriented (preventing defects), while Testing is product-oriented (finding defects)
  • B) SQA is performed only after deployment, while Testing is done during coding
  • C) Testing fixes bugs, while SQA writes source code
  • D) There is no difference between them

Correct Answer: A) SQA is process-oriented (preventing defects), while Testing is product-oriented (finding defects)

Question 3: Which testing technique checks the internal logic and code structure of an application?

  • A) Black-box Testing
  • B) White-box Testing
  • C) User Acceptance Testing
  • D) Alpha Testing

Correct Answer: B) White-box Testing

Question 4: Which testing technique evaluates system functionality without knowledge of internal code structure?

  • A) White-box Testing
  • B) Black-box Testing
  • C) Glass-box Testing
  • D) Unit Testing

Correct Answer: B) Black-box Testing

Question 5: What type of testing ensures that newly added code changes do not break existing functionality?

  • A) Unit Testing
  • B) Regression Testing
  • C) Smoke Testing
  • D) Stress Testing

Correct Answer: B) Regression Testing
Note: Explore foundational concepts in these SQA MCQs along with our guide on Web Technologies MCQs.

Question 6: Which testing is performed at the individual component level by developers?

  • A) System Testing
  • B) Unit Testing
  • C) Acceptance Testing
  • D) Integration Testing

Correct Answer: B) Unit Testing

Question 7: What is a Software Bug or Defect?

  • A) A hardware failure in the CPU
  • B) A variance between expected behavior and actual system output
  • C) A slow internet connection speed
  • D) An outdated operating system update

Correct Answer: B) A variance between expected behavior and actual system output

Question 8: Which testing level verifies the interaction between integrated modules?

  • A) Unit Testing
  • B) Integration Testing
  • C) System Testing
  • D) Alpha Testing

Correct Answer: B) Integration Testing

Question 9: What is Verification in the V-Model of software development?

  • A) Are we building the product right? (Checking process and documents)
  • B) Are we building the right product? (Testing the final executable)
  • C) Running automated load scripts
  • D) Deploying to production servers

Correct Answer: A) Are we building the product right? (Checking process and documents)

Question 10: What is Validation in software quality management?

  • A) Reviewing requirements documents on paper
  • B) Are we building the right product? (Evaluating software against user requirements)
  • C) Compiling source code files
  • D) Installing database drivers

Correct Answer: B) Are we building the right product? (Evaluating software against user requirements)

Question 11: Which black-box technique divides input data into valid and invalid partitions?

  • A) Boundary Value Analysis
  • B) Equivalence Partitioning
  • C) Code Coverage Analysis
  • D) Path Testing

Correct Answer: B) Equivalence Partitioning

Question 12: Which black-box technique tests values at the extreme edges of input ranges?

  • A) Equivalence Partitioning
  • B) Boundary Value Analysis (BVA)
  • C) State Transition Testing
  • D) Decision Table Testing

Correct Answer: B) Boundary Value Analysis (BVA)

Question 13: What type of testing is performed by potential end-users at the developer’s site before product release?

  • A) Beta Testing
  • B) Alpha Testing
  • C) Unit Testing
  • D) Load Testing

Correct Answer: B) Alpha Testing

Question 14: What type of testing is performed by end-users in their own real-world environment?

  • A) Alpha Testing
  • B) Beta Testing
  • C) Component Testing
  • D) Integration Testing

Correct Answer: B) Beta Testing

Question 15: What is Smoke Testing often called?

  • A) Deep Exhaustive Testing
  • B) Build Verification Testing (BVT)
  • C) Security Penetration Testing
  • D) Static Code Inspection

Correct Answer: B) Build Verification Testing (BVT)

Question 16: What is the primary purpose of Sanity Testing?

  • A) To quickly verify if a minor code fix or build is rational enough to proceed with deeper testing
  • B) To test system performance under extreme loads
  • C) To review user manuals and documentation
  • D) To test database backup recovery

Correct Answer: A) To quickly verify if a minor code fix or build is rational enough to proceed with deeper testing

Question 17: Which non-functional testing type measures system responsiveness under heavy user traffic?

  • A) Functional Testing
  • B) Performance Testing
  • C) Unit Testing
  • D) Structural Testing

Correct Answer: B) Performance Testing

Question 18: What type of performance testing determines system behavior beyond normal capacity limits?

  • A) Load Testing
  • B) Stress Testing
  • C) Usability Testing
  • D) Component Testing

Correct Answer: B) Stress Testing

Question 19: What is static testing in SQA?

  • A) Executing application code on a server
  • B) Testing performed without executing the application code (Reviews, Inspections, Walkthroughs)
  • C) Running automated Selenium scripts
  • D) Testing database network speed

Correct Answer: B) Testing performed without executing the application code (Reviews, Inspections, Walkthroughs)

Question 20: What is dynamic testing?

  • A) Reading design documentation
  • B) Testing performed by executing the software application with test data
  • C) Peer review of requirements
  • D) Code formatting check

Correct Answer: B) Testing performed by executing the software application with test data

Question 21: Which document outlines the strategy, scope, resources, and schedule of intended testing activities?

  • A) Test Case
  • B) Test Plan
  • C) Bug Report
  • D) Release Note

Correct Answer: B) Test Plan

Question 22: What constitutes a Test Case in software testing documentation?

  • A) A set of preconditions, inputs, actions, expected results, and postconditions
  • B) A list of developer salaries
  • C) Database schema definitions
  • D) Operating system kernel code

Correct Answer: A) A set of preconditions, inputs, actions, expected results, and postconditions

Question 23: What metric measures the percentage of source code executed during automated testing?

  • A) Cyclomatic Complexity
  • B) Code Coverage
  • C) Defect Density
  • D) Mean Time Between Failures

Correct Answer: B) Code Coverage

Question 24: What is Cyclomatic Complexity used for in software metrics?

  • A) Measuring the quantitative structural complexity of a program
  • B) Measuring software installation time
  • C) Calculating hardware hosting costs
  • D) Counting lines of text in user manuals

Correct Answer: A) Measuring the quantitative structural complexity of a program

Question 25: What is a False Positive in automated software testing?

  • A) A test that reports a defect when the system is actually working correctly
  • B) A test that passes when a defect exists
  • C) A bug that causes hardware reboot
  • D) A valid user login attempt

Correct Answer: A) A test that reports a defect when the system is actually working correctly

Part 2: Bug Life Cycle & Advanced QA Metrics

Question 26: What is the initial status of a bug when it is logged by a tester in a defect tracking tool?

  • A) Assigned
  • B) Open / New
  • C) Fixed
  • D) Verified

Correct Answer: B) Open / New

Question 27: What does Bug Severity indicate?

  • A) The business importance or urgency of fixing the bug
  • B) The technical impact of the defect on system operation and functionality
  • C) The time taken by developers to write code
  • D) The size of the test case document

Correct Answer: B) The technical impact of the defect on system operation and functionality

Question 28: What does Bug Priority indicate?

  • A) The urgency with which a defect should be fixed based on business needs
  • B) The lines of code affected by the bug
  • C) The operating system version
  • D) The total RAM consumed by the bug

Correct Answer: A) The urgency with which a defect should be fixed based on business needs

Question 29: What situation describes a bug with High Severity but Low Priority?

  • A) System crash on a button that is rarely accessed or obsolete
  • B) Company logo misspelled on the home page
  • C) Login page completely broken for all users
  • D) Payment gateway rejecting valid credit cards

Correct Answer: A) System crash on a button that is rarely accessed or obsolete

Question 30: What situation describes a bug with High Priority but Low Severity?

  • A) A typo in the company name on the main homepage
  • B) Database corruption during server restart
  • C) Application crash on data export
  • D) Memory leak in background worker

Correct Answer: A) A typo in the company name on the main homepage

Question 31: What status is assigned to a bug when developers fix it and send it back to QA for re-testing?

  • A) Closed
  • B) Resolved / Fixed
  • C) Deferred
  • D) Rejected

Correct Answer: B) Resolved / Fixed

Question 32: What happens when a tester verifies a fixed bug and finds it still reproduces?

  • A) The bug is Closed
  • B) The bug is Reopened
  • C) The bug is Deferred
  • D) The bug is Archived

Correct Answer: B) The bug is Reopened

Question 33: What is Exploratory Testing?

  • A) Simultaneous learning, test design, and test execution without pre-scripted test cases
  • B) Running scheduled overnight regression builds
  • C) Reading user requirements documents
  • D) Stress testing network bandwidth

Correct Answer: A) Simultaneous learning, test design, and test execution without pre-scripted test cases

Question 34: Which testing framework is widely used for web browser automation?

  • A) Selenium
  • B) Wireshark
  • C) Cisco Packet Tracer
  • D) MySQL Workbench

Correct Answer: A) Selenium

Question 35: What is Defect Density?

  • A) Total bugs divided by total developer lines of code
  • B) Number of testers in a software company
  • C) Time taken to log a test case
  • D) Number of test scripts executed per hour

Correct Answer: A) Total bugs divided by total developer lines of code

  • A) Compliance / Regulatory Testing
  • B) Unit Testing
  • C) Smoke Testing
  • D) Stub Testing

Correct Answer: A) Compliance / Regulatory Testing

Question 37: What is a Test Stub in integration testing?

  • A) A dummy module that simulates a lower-level module called by the module under test
  • B) A physical hardware connector
  • C) A database backup table
  • D) An error log file

Correct Answer: A) A dummy module that simulates a lower-level module called by the module under test

Question 38: What is a Test Driver in integration testing?

  • A) A dummy module that simulates a higher-level calling module
  • B) A printer hardware software driver
  • C) A human test engineer
  • D) An automated test runner machine

Correct Answer: A) A dummy module that simulates a higher-level calling module

Question 39: Which testing type evaluates system security against unauthorized hacking attempts?

  • A) Penetration Testing (Pen Testing)
  • B) Usability Testing
  • C) Load Testing
  • D) Compatibility Testing

Correct Answer: A) Penetration Testing (Pen Testing)

Question 40: What is Compatibility Testing?

  • A) Verifying software operates across different browsers, operating systems, and hardware
  • B) Checking developer code style conventions
  • C) Measuring CPU memory usage
  • D) Counting database tables

Correct Answer: A) Verifying software operates across different browsers, operating systems, and hardware

Question 41: What is Usability Testing focused on evaluating?

  • A) Ease of use, user-friendliness, and user experience of the application interface
  • B) Network packet loss rates
  • C) Database indexing speed
  • D) Server power consumption

Correct Answer: A) Ease of use, user-friendliness, and user experience of the application interface

Question 42: What is monkey testing in SQA?

  • A) Providing random, arbitrary inputs to test system stability and crash tolerance
  • B) Testing performed exclusively on mobile devices
  • C) Writing structured automated test scripts
  • D) Formal code inspection by management

Correct Answer: A) Providing random, arbitrary inputs to test system stability and crash tolerance

Question 43: Which model emphasizes testing activities alongside corresponding development phases?

  • A) V-Model (Verification & Validation)
  • B) Waterfall Model
  • C) Big Bang Model
  • D) Linear Sequential Model

Correct Answer: A) V-Model (Verification & Validation)

Question 44: What is a Defect Leakage metric?

  • A) Defects discovered by customers in production that were missed during QA testing
  • B) Water damage in data center servers
  • C) Memory leaks in RAM
  • D) Unsaved source code files

Correct Answer: A) Defects discovered by customers in production that were missed during QA testing

Question 45: What does TDD stand for in agile software development?

  • A) Test-Driven Development
  • B) Technical Data Design
  • C) Total Defect Detection
  • D) Task-Driven Deployment

Correct Answer: A) Test-Driven Development

Question 46: What is the core workflow of Test-Driven Development (TDD)?

  • A) Write test first -> Run test (fail) -> Write minimal code -> Pass test -> Refactor
  • B) Write all code -> Deploy -> Write tests later
  • C) Manual testing only on production
  • D) Skip testing if code compiles without errors

Correct Answer: A) Write test first -> Run test (fail) -> Write minimal code -> Pass test -> Refactor

Question 47: What does BDD stand for in software QA methodologies?

  • A) Behavior-Driven Development
  • B) Build Defect Analysis
  • C) Base Data Deployment
  • D) Binary Domain Design

Correct Answer: A) Behavior-Driven Development

Question 48: What is Regression Testing Automation most beneficial for?

  • A) Saving time and effort when running repetitive test suites across multiple releases
  • B) Eliminating the need for developers
  • C) Writing requirements documents
  • D) Designing application logos

Correct Answer: A) Saving time and effort when running repetitive test suites across multiple releases

Question 49: What is the purpose of a Traceability Matrix (RTM)?

  • A) Mapping user requirements to corresponding test cases to ensure complete test coverage
  • B) Tracking network IP addresses
  • C) Monitoring developer attendance
  • D) Calculating project hardware budgets

Correct Answer: A) Mapping user requirements to corresponding test cases to ensure complete test coverage

Question 50: Why is mastering SQA MCQs and testing fundamentals essential for computer science careers?

  • A) Because delivering bug-free, reliable software is vital for business success and user trust
  • B) Because testing is no longer used in modern software development
  • C) Because it replaces writing code entirely
  • D) Because manual inspection is always 100% defect proof

Correct Answer: A) Because delivering bug-free, reliable software is vital for business success and user trust

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