Computer Knowledge

Software Testing and Quality Control

2,292 Questions

Software testing and quality control questions cover testing methodologies, unit testing, and defect management. These concepts are crucial for the computer knowledge sections of competitive exams. Practice these questions to understand verification and validation processes thoroughly.

Quality control typesUnit testing purposeSoftware vulnerability testingTest planning tasksLoop testing criteriaTest harness functions

Software Testing and Quality Control Questions

Multiple choice technology testing

Black box testing is

  1. Functional testing

  2. Structural testing

  3. Performance testing

  4. Requirements testing
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Black box testing focuses on inputs and outputs without knowledge of internal implementation - this is the definition of functional testing. Structural testing (glass box) requires code knowledge, performance testing measures speed/scalability, and requirements testing validates against specifications (though all functional tests ultimately trace to requirements).

Multiple choice technology testing

What is the main characteristic of the best tester?

  1. The one who finds the most bugs.

  2. The one who embarrasses the most programmers.

  3. The one who gets the most bugs fixed.

  4. a & c
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The best tester is measured by bugs FIXED, not found. A tester who finds 100 bugs that get ignored is less valuable than one who finds 10 critical bugs that all get fixed. The goal is improving software quality, which only happens when bugs are actually resolved. Option D (a & c) would be correct if both A and C were right, but finding the most bugs alone doesn't make someone the best.

Multiple choice technology testing

Which of the following is an example of static testing:

  1. Black box testing

  2. Structural testing

  3. Path testing

  4. None of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Static testing involves evaluating software artifacts without executing code. Options A, B, and C (black box, structural, path testing) are all dynamic testing techniques that require running the program. Therefore D (None of the above) is correct - none of the listed options are static testing methods.

Multiple choice technology testing

Which of the following is NOT part of system testing?

  1. Business process-based testing.

  2. Performance, load and stress testing.

  3. Usability testing.

  4. Top-down integration testing.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

System testing validates the entire integrated system against requirements. Options A, B, and C (business process testing, performance/load/stress testing, usability testing) are all system-level activities. Top-down integration testing is an integration testing strategy, not system testing - it's about combining modules, not testing the complete system.

Multiple choice technology testing

Which of the following is a form of static testing:

  1. Appraisal

  2. Walkthrough

  3. Assessment

  4. Gap Analysis
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Walkthrough is a form of static testing where peers review documents or code informally to find defects. Appraisal, Assessment, and Gap Analysis are not standard static testing techniques. Walkthroughs, inspections, and technical reviews are the primary static testing methods.

Multiple choice technology testing

Which of the following requirements is testable?

  1. The system shall be user friendly.

  2. The safety-critical parts of the system shall contain 0 faults.

  3. The response time shall be less than one second for the specified design load.

  4. The system shall be built to be portable.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A testable requirement must be objective, quantifiable, and measurable. Specifying a response time of 'less than one second for the specified design load' provides a clear, measurable threshold, unlike subjective terms like 'user friendly' or 'portable'.

Multiple choice technology testing

Integration testing

  1. involves testers look for various types of bugs in the entire system, fully integrated.

  2. involves testers looking for bugs in the relationships and interfaces between pairs and components of groups of components in the system under test.

  3. Occurs often in a staged fashion.

  4. B & C.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Integration testing focuses on relationships and interfaces between components. Option B correctly describes this - testing bugs in relationships and interfaces between pairs and groups of components. Option C is also correct because integration testing often happens in stages (incremental integration). Therefore D (B & C) is the correct answer.

Multiple choice technology testing

Structural testing is not

  1. Glass box testing.

  2. Proper selection of program or subprogram paths.

  3. Feeding the component input and examining the output.

  4. Exercised during the battery of tests.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Structural testing (also called glass box or white box testing) involves examining internal code structure and selecting specific paths through the program. Option C describes black box testing - feeding inputs and examining outputs without knowledge of internal structure. Since structural testing DOES involve internal knowledge, C is what it is NOT.

Multiple choice technology testing

How would you estimate the amount of re-testing likely to be required?

  1. Metrics from previous similar projects.

  2. Discussions with the development team

  3. Time allocated for regression testing.

  4. a&b.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Estimating re-testing effort should be based on historical data from similar projects (metrics) AND discussions with the development team about expected changes and code quality. Time allocated for regression testing is a result of the estimate, not an input to it. Therefore D (a & b) correctly combines the two estimation approaches.

Multiple choice technology testing

Junit is a (Choose Two)

  1. a.)Open Source Framework

  2. b.)Regression-Testing Framework

  3. c.)Java Application Development Framework

  4. d.)Web Application Framework
Reveal answer Fill a bubble to check yourself
A,B Correct answer
Explanation

JUnit is an open-source framework (Option A) designed specifically for regression testing (Option B) in Java applications. It is NOT a general Java application development framework (Option C) - that would be something like Spring or Java EE. It is also NOT a web application framework (Option D) - that would be frameworks like JSF or Spring MVC.

Multiple choice technology testing

Unit Testing belongs to

  1. a.) Test a single unit of code

  2. b.)Test a one module of the application

  3. c.)Test a whole application

  4. d.)Test the data, stored in database.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Unit testing specifically focuses on testing the smallest testable part of an application - a single unit of code such as a method, function, or class (Option A). It does NOT test entire modules (Option B), whole applications (Option C), or database data directly (Option D) - those are integration or system testing levels.

Multiple choice technology testing

Junit supports two ways (Static & Dynamic) to run a single unit test. True/False?

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

JUnit does support both static (using test suites and test runners) and dynamic (using JUnit 4's @Test annotation and JUnit 5's @TestFactory) approaches to run single unit tests. The static approach involves explicit test suite creation, while the dynamic approach uses runtime test discovery and execution through annotations.

Multiple choice technology testing

Which of the following elements needed in CLASSPATH to run the Junit tests

  1. The JUnit JAR file.

  2. b.) Location of your JUnit test classes.

  3. c.) Location of classes to be tested.

  4. d.) JAR files of class libraries that are required by classes to be tested

  5. e.) All of the above
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

To run JUnit tests, the CLASSPATH must include: the JUnit JAR file itself (Option A), the location of JUnit test classes (Option B), the location of classes being tested (Option C), and any dependent library JARs (Option D). All four components (Option E) are essential for the test runner to find and execute tests properly.

Multiple choice technology testing

JUnit TestSuite is a

  1. a.) Container class, which used to group multiple test cases into a collection and run them together.

  2. b.) defines test fixture, which contains all the test methods.

  3. c.) interface, which contains the declaration of all the methods, needs to be implemented by Testcases.

  4. d.) None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A JUnit TestSuite is a container class (Option A) used to group multiple test cases into a collection and run them together. It does NOT define test fixtures (Option B) - that's the purpose of @Before/@BeforeAll methods. It is NOT an interface (Option C) - TestSuite is a concrete class. Option D is incorrect because Option A accurately describes TestSuite functionality.