Software Testing MCQ Quiz - Objective Question with Answer for Software Testing - Download Free PDF

The correct answer is option 1

Key Points

Black-box testing, also known as behavioral testing, focuses on the software's functional specifications. In other words, black-box testing allows a software developer to create sets of input conditions that completely exercise all of a program's functional requirements. The methods for behavioral testing are as follows.

1. graph-based testing methods
2. equivalence partitioning
3. boundary value analysis
4. comparison testing
5. orthogonal array testing

So the Glass box testing is not black-box testing because glass box testing is open box testing but black-box testing is closed box testing.

Additional Information

Glass box testing:

Glass box testing is a testing technique that examines the program structure and derives test data from the program logic/code. The other names of glass box testing are clear box testing, open box testing, logic-driven testing or path-driven testing, or structural testing.

• Verification and validation techniques are very similar since both these techniques are designed to help remove errors in a software
• In spite of the apparent similarity between their objectives, the underlying principles of these two bug detection techniques and their applicability are very different
• Verification is the process of determining whether the output of one phase of software development conforms to that of its previous phase
• Validation is the process of determining whether a fully developed software conforms to its requirements specification

Performance testing is designed to test the run-time performance of software within the context of an integrated system. Performance testing occurs throughout all steps in the testing process.

Performance tests are often coupled with stress testing and usually require both hardware and software instrumentation.

The correct answer is Option 1.

• S1: Statement coverage cannot guarantee execution of loops in program under test.
  • Statement coverage ensures that each statement in the code is executed at least once. However, it does not ensure that all possible paths through a loop are executed, especially if the loop can execute multiple times.
• S2: Use of independent path testing criterion guarantees execution of each loop in a program under test more than once.
  • Independent path testing involves testing all possible paths through the code, which includes ensuring that loops are executed enough times to cover all independent paths. This means that each loop will be executed more than once, if necessary, to cover those paths.

• Statement coverage is a basic testing criterion, but it does not account for the complexity of loops and conditional paths in the code.
• Independent path testing is a more thorough approach as it ensures that all possible execution paths, including those within loops, are tested.
• Both S1 and S2 are true, making Option 1 the correct answer.

Concept:

Mutlimedia means combination of text, audio, video, graphics, and animation. Mutlimedia project are the multimedia materials which are presented on computer screen.

Explanation:

Phases of a multimedia project are : planning, designing , testing and delivering. 

Some points about multimedia project : 

• Interactive mutlimedia gives the navigational controls to the user. It control what elements are to be delivered.
• It requires creative skills, tools and organization talent to create mutlimedia projects.
• There are two categories in multimedia : linear and non - linear.
• Linear multimedia is without any navigational control example cinema.
• Non - linear provides user interactivity to control progress. Example : computer game.
• Mutlimedia system must be integrated, handled digitally and usually interactive.
• Mutlimedia can be delivered using optical disk, web or distributed network.

NON-FUNCTIONAL REQUIREMENT (NFR)

It specifies the quality attribute of a software system. They judge the software system based on Responsiveness, Usability, Security, Portability, and other non-functional standards that are critical to the success of the software system

Product requirements

Requirements specify that the delivered product must behave in a particular way, e.g. execution speed, reliability, etc.

Organizational requirements

Requirements which are a consequence of organizational policies and procedures, e.g. process standards used, implementation requirements, etc.

External requirement

Requirements which arise from factors which are external to the system and its development process, e.g. interoperability requirements, a legislative requirement

The correct answer: Acceptance Testing

Alpha and Beta testing are forms of:

Acceptance Testing

Important Points

Alpha Testing is usually done by internal staff before the product is released to external testers. It is a type of acceptance testing that's done in a lab environment and not by the end users. It helps identify all possible issues and problems in the system before it goes for Beta testing. 

Beta Testing is performed by actual users or potential customers in their own environment. It is the second phase of testing in which a sampling of the intended audience tries the product out before it is officially released to the general public. This is the final test before shipping the product. Problems that were not discovered during Alpha testing may be identified here.

These types of tests are done to make sure that the system is working as expected and will be accepted by the end users. They are types of User Acceptance Testing (UAT) and are very important in software development processes.

Data

code testes in unit testing = t =90% = 0.9

probability of success = p = 0.9

Calculation

Reliability ≤  t × p = 0.9 ×0.9 = 0.81

Threfere, the reliability of the module is at most 0.81

Correct answer is Option 4

Explanation:

• Fault-based testing aims to detect certain classes of known faults.
• Example: security testing for buffer overflows
• Mutation Testing Fault-based testing strategy
• It is used to evaluate test suite adequacy
• Measures the effectiveness of test cases
• Leads to creation of more effective tests
• Mutation Testing Faults are introduced into the program by creating versions of the program called mutants.

Debugger:

• A debugger is a computer program used to test and debug target programs.
• The main use of a debugger is to run the target program under controlled conditions that permit the programmer to track its operations in progress and monitor changes in computer resources that may indicate malfunctioning code.
• Typical debugging facilities include the ability to run or halt the target program at specific points, display the contents of memory, CPU registers or storage, and modify memory or register contents in order to enter selected test data that might be a cause of faulty program execution.

The correct option is (4)

Gorilla testing

Concept:-

This kind of software testing methodology places a lot of emphasis on thoroughly evaluating one specific module. By having various testing teams evaluate the same capability, quality assurance teams examine one or a few functionalities fully or exhaustively to discover any deviations.

Key Points

• Gorilla testing is a method of software testing in which a program module is routinely examined to ensure that it is working correctly and is free of flaws.
• A module can be assessed in exactly the same manner 100 times. Gorilla testing is so frequently referred to as "Frustrating Testing."

Additional InformationFuzz testing:- An automated software testing technique called fuzzing introduces erroneous, abnormal, or unexpected inputs into a system in order to detect flaws and vulnerabilities in the software.

Breadth Testing:- It is a test suite that confirms a product's complete functionality but does not thoroughly evaluate all of the features.

Inter-system testing:- Inter-system testing is the process of evaluating the integration points and functionality between various systems that share a common data source.

The correct answer is "option 4".

CONCEPT: 

Testing is a process of evaluating software in order to identify any errors contrary to actual requirements. 

Testing ensures that the software product is defect-free.

EXPLANATION: 

option1: Path testing is used to design the test cases.

option2: Integration testing includes the testing of two or more combined modules of the software.

option3: Unit testing includes the testing of every single module or component of the software.

option4: Regression testing is used to test modified parts of code & parts affected by the code to ensure that software doesn't have any defect after modifications.

Hence, Regression Testing ensures that the software product runs correctly after the changes during maintenance.

Concept:

Regression Testing

It is defined as a type of software testing to confirm that a recent program or code change has not adversely affected existing features. Regression Testing is nothing but a full or partial selection of already executed test cases which are re-executed to ensure existing functionalities work fine

Smoke Testing 

It is a software testing technique performed post software build to verify that the critical functionalities of software are working fine. It is executed before any detailed functional or regression tests are executed.

Stress testing

It is a software testing activity that determines the robustness of software by testing beyond the limits of normal operation. Stress testing is particularly important for "mission critical" software, but is used for all types of software

Hence Option 4 is correct

The correct answer is option 1.

Key Points

• Total number of faults found = 159
• Real faults detected among all detected faults = 159 - 75 = 84
• Since probability distribution is the same, the total number of real  faults is (100/75)*84 = 112
• Undetected real faults = 112- 84 = 28 

Alternate Method

• 75% of defects are observed because of 75 of 100 artificially seeded defects. Given that the total faults detected = 159
• Real faults detected among all detected faults = 159 – 75= 84
• Since probability distribution is the same, the total number of real faults is (100/75)*84 = 112
  Therefore undetected real faults = 112-84 = 28.

Hence the correct answer is 28.