Fault Injection Tools CTAL-TTA Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   What is the primary purpose of using fault injection during testing?

   • ATo replace unit testing by automatically generating test cases
   • BTo identify security vulnerabilities by simulating external attacks
   • CTo verify that the system correctly handles errors and remains robust when faults occur
   • DTo measure the system's performance under normal operating conditions
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2. 2expert · hard

   A company is developing a financial trading system. The system must be able to handle a failure in the market data feed without losing trades. The test team has been asked to verify this requirement. However, the team has limited time and cannot perform extensive testing. What is the most effective way to verify this requirement?

   • ATest the system with a large number of trades to see if it can handle the load.
   • BReview the code to identify potential issues in the trade processing logic.
   • CSimulate a market data feed failure and verify that trades are queued and processed correctly.
   • DUse a monitoring tool to observe the system's behavior during normal operation.
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4. 3foundation · easy

   What is a typical capability of a fault injection tool?

   • AGenerating test data for normal functional testing
   • BMeasuring code coverage during unit testing
   • CInjecting faults into a system to observe its behavior under error conditions
   • DAutomatically fixing defects found during testing
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5. 4application · easy

   A development team is building a web application that must remain available during a database outage. They have implemented a retry mechanism with exponential backoff. The team wants to verify that the application correctly handles a database failure and does not crash. What is the primary reason for using fault injection in this scenario?

   • ATo deliberately introduce a database failure and observe how the application responds.
   • BTo ensure that the database is always available.
   • CTo identify security vulnerabilities in the application's code.
   • DTo measure the performance of the application under normal load.
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6. 5foundation · easy

   Which fault injection technique involves introducing faults at the physical layer, such as causing a hardware component to malfunction?

   • ANetwork-based fault injection
   • BInterface-based fault injection
   • CSoftware-based fault injection
   • DHardware-based fault injection
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