Software Testing - Full Review

Fundamental Limit of Testing

1 pts

volume_mute

Which statement most accurately captures the fundamental limit of software testing?

Testing proves software correctness when 100% branch coverage is achieved

Testing is only useful for functional requirements, not non-functional ones

Testing can only show the presence of errors in a program; it cannot show there are no remaining faults

Testing guarantees that the software is defect-free when all test cases pass

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Validation vs. Verification - Key Distinction

1 pts

Complete the two questions that distinguish validation from verification: Validation: "Are we building the (1) product?" Verification: "Are we building the product (2)?"

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wrong

faster

right

correctly

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Three Stages of Commercial Testing

1 pts

Classify each activity into the correct stage of commercial software testing.

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Inspection Advantage - Error Masking

1 pts

volume_mute

Why does software inspection avoid the problem of error masking that affects testing?

Inspections require errors to be corrected in the order they are found

Inspections do not involve executing the system, so errors in one part cannot cause misleading outputs in another

Inspections automatically fix errors before they can mask each other

Inspections use formal verification that prevents errors from occurring

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Parts of an Automated Unit Test

1 pts

An automated unit test has three standard parts. Match each part to its description.

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Click on the match in the second group

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Part

Setup

Assertion

Call

Description

Initialize the system with the test case inputs and expected outputs

Compare the actual result with the expected result; true means pass, false means fail

Invoke the object or method being tested

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Equivalence Partitioning - Core Principle

1 pts

volume_mute

Why can you test just one or a few values from each equivalence partition instead of all possible values?

Because programs normally behave in a comparable way for all members of an equivalence partition

Because the other values are mathematically equivalent and produce identical binary outputs

Because testing all values is prohibited by intellectual property restrictions

Because testing tools can only generate one value per partition automatically

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Four Interface Types

1 pts

Please drag and drop the options to sort them

Sort the four types of component interfaces by placing them in the order they are typically described (parameter, shared memory, procedural, message passing).

Message passing interfaces - components request services by passing messages

Procedural interfaces - one component encapsulates procedures callable by others

Shared memory interfaces - a block of memory shared between subsystems

Parameter interfaces - data or function references passed from one component to another

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TDD Core Process - Identify the Missing Step

1 pts

volume_mute

In TDD, a developer (1) identifies a small functionality increment, (2) writes an automated test, (3) runs the test and it fails, (4) implements the functionality, and (5) re-runs all tests. If all tests now pass, what is the sixth step?

Write documentation for the new feature

Submit the code for peer review before moving to the next increment

Delete the test that was just written to keep the test suite lean

Refactor the code to improve its structure without breaking any tests

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Release Testing Approaches

1 pts

Match each release testing approach to its key characteristic.

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Approach

Requirements-based testing

Performance testing

Stress testing

Scenario testing

Characteristic

Checks the system meets response time and throughput requirements at expected load

Uses realistic usage stories to test multiple features together and their interactions

Derives tests directly from each specified requirement to check it has been satisfied

Overloads the system beyond its design capacity to observe failure behavior

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User Testing Types - Sort by Formality

1 pts

Please drag and drop the options to sort them

Arrange the three types of user testing from least formal (most exploratory) to most formal (most contractually binding).

Alpha testing - selected users work with the development team on early releases

Acceptance testing - customers test with real data to decide on contract sign-off

Beta testing - a larger group of users experiments and reports problems

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Three Interface Error Classes

1 pts

Classify each scenario into the correct interface error class.

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TDD Benefits vs. Limitations

1 pts

Which of the following are documented benefits of TDD, and which are documented limitations? Classify each.

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System Testing - Emergent Behavior

1 pts

volume_mute

A development team integrates an encryption module with a mobile device sync module. During system testing, they discover the system correctly enforces that records must always be encrypted before syncing to a mobile device - a behavior not present in either module alone. They also find that occasionally a sync operation corrupts a record if interrupted mid-transfer. Which statement correctly describes these two findings?

The encryption enforcement is planned emergent behavior; the corruption is unplanned emergent behavior that tests must check for

The corruption is planned behavior for interrupted transfers; the encryption enforcement is a bug

Both are planned emergent behaviors that the system architecture intended

Both are unplanned emergent behaviors that indicate serious design flaws

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Acceptance Testing Stages - Correct Order

1 pts

volume_mute

A customer is about to begin formal acceptance testing of a new hospital information system. Which correctly shows the order of the six acceptance testing stages?

Define criteria - Plan testing - Derive tests - Run tests - Negotiate results - Accept/reject

Plan - Define criteria - Derive tests - Run tests - Negotiate results - Accept/reject

Define criteria - Derive tests - Plan testing - Run tests - Accept/reject - Negotiate results

Derive tests - Define criteria - Plan testing - Run tests - Negotiate results - Accept/reject

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Automated vs. Manual Testing - Key Advantage

1 pts

volume_mute

What is the most significant practical advantage of automated testing over manual testing?

Automated tests generate better test cases than human testers in all situations

Automated testing is completely free to set up and requires no configuration

Automated tests can be re-run quickly and cheaply every time a change is made, making regression testing practical

Automated testing can find all possible defects in a program given enough time

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Mock Objects - Purpose and Use

1 pts

volume_mute

A team is implementing a component that sends emails via an external SMTP server. During unit testing, they do not want to send real emails but still need to verify that their component correctly formats and triggers email sends. What is the most appropriate approach?

Skip testing this component since it depends on an external system

Set up a live SMTP server in the test environment and send real test emails

Use a mock object that has the same interface as the SMTP service but records calls without sending real emails

Test only after the SMTP integration is complete in the production environment

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Scenario Testing - Multiple Requirements Coverage

1 pts

volume_mute

The Mentcare home visit scenario for nurse George tests seven different system features in one narrative. What key advantage does this demonstrate over testing each requirement in isolation?

It demonstrates that requirements-based testing is unnecessary when scenario testing is used

It demonstrates that scenario testing checks that combinations of requirements do not cause problems when used together

It demonstrates that scenario testing is always cheaper than requirements-based testing

It demonstrates that scenario testing can only be used for healthcare systems

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Guideline-Based Testing for Sequences

1 pts

volume_mute

Which three guidelines are recommended for testing programs that process sequences or arrays?

Test only with sequences containing unique values

Always test with the maximum possible sequence length only

Only test sequences with an even number of elements

Test with sequences that have only a single value

Derive tests so that the first, middle, and last elements of the sequence are accessed

Use different sequences of different sizes in different tests

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User Testing - Working Environment Impact

1 pts

volume_mute

A hospital patient information system passes all system tests and release tests in the developer's lab. During user testing in the hospital, nurses report that the system is unreliable and slow during busy periods. What does this illustrate?

The developer's testing was incompetent and should be repeated

Influences from the real working environment (concurrent users, clinical interruptions, real data volumes) can cause issues invisible in the developer's artificial testing environment

The hospital's hardware is inadequate and must be upgraded before deployment

User testing is unnecessary if release testing has already been completed

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Comprehensive Classification of Testing Concepts

1 pts

Classify each statement as belonging to development testing, release testing, or user testing.

Fundamental Limit of Testing

Correct Answer

Explanation

Validation vs. Verification - Key Distinction

Correct Answer

Explanation

Three Stages of Commercial Testing

drag and drop the selected option to the right place

Correct Answer

Explanation

Inspection Advantage - Error Masking

Correct Answer

Explanation

Parts of an Automated Unit Test

Part

Description

Correct Answer

Explanation

Equivalence Partitioning - Core Principle

Correct Answer

Explanation

Four Interface Types

Correct Answer

Explanation

TDD Core Process - Identify the Missing Step

Correct Answer

Explanation

Release Testing Approaches

Approach

Characteristic

Correct Answer

Explanation

User Testing Types - Sort by Formality

Correct Answer

Explanation

Three Interface Error Classes

drag and drop the selected option to the right place

Correct Answer

Explanation

TDD Benefits vs. Limitations

drag and drop the selected option to the right place

Correct Answer

Explanation

System Testing - Emergent Behavior

Correct Answer

Explanation

Acceptance Testing Stages - Correct Order

Correct Answer

Explanation

Automated vs. Manual Testing - Key Advantage

Correct Answer

Explanation

Mock Objects - Purpose and Use

Correct Answer

Explanation

Scenario Testing - Multiple Requirements Coverage

Correct Answer

Explanation

Guideline-Based Testing for Sequences

Correct Answer

Explanation

User Testing - Working Environment Impact

Correct Answer

Explanation

Comprehensive Classification of Testing Concepts

drag and drop the selected option to the right place

Correct Answer

Explanation

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