Fault Injection Tools CTAL-TTA Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   Why would a test team deliberately inject faults into a system that appears to be working correctly?

   • ATo increase the system's processing speed by removing unnecessary code
   • BTo ensure the system's error handling and recovery mechanisms work as intended
   • CTo verify that the system can operate without any external dependencies
   • DTo demonstrate that the system never fails under any circumstances
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2. 7application · medium

   A test team is testing a web application that uses a third-party authentication service. They need to test how the application handles a failure in the authentication service. The team has access to the application's code and can modify it for testing. Which fault injection technique is most appropriate?

   • APhysically disconnect the server from the network.
   • BUse a mock object to simulate a failure in the authentication service.
   • CUse a load testing tool to send many requests to the authentication service.
   • DUse a hardware fault injection tool to corrupt the server's memory.
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4. 8application · medium

   A test team is testing a mobile application that relies on a backend service. They want to test how the app behaves when the backend service returns an unexpected response format. The team has access to the app's code and can modify it for testing. Which fault injection technique is most appropriate?

   • AUse a load testing tool to send many requests to the backend.
   • BPhysically disconnect the device from the network.
   • CUse a hardware fault injection tool to corrupt the device's memory.
   • DUse a proxy tool to intercept and modify the backend response.
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5. 9application · medium

   A test team is working on a distributed system that communicates via REST APIs. They need to test how the system handles various network failures, such as timeouts and connection resets. The team wants to use a tool that can simulate these failures without modifying the application code. Which type of tool is most suitable?

   • AA code coverage tool that measures which lines of code are executed.
   • BA unit testing framework that mocks API calls.
   • CA load testing tool that generates high traffic.
   • DA network fault injection tool that intercepts and modifies network traffic.
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6. 10expert · hard

   A test manager is planning the testing strategy for a new healthcare system. The system must be highly reliable and handle failures gracefully. The manager wants to include fault injection in the test plan. However, the team has limited experience with fault injection. What is the most effective way to build the team's capability in fault injection?

   • ASkip fault injection testing and rely on code review.
   • BOutsource fault injection testing to an external vendor.
   • CUse a complex fault injection tool immediately to cover all scenarios.
   • DStart with simple fault injection scenarios and gradually increase complexity.
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