Dynamic Testing CT-PT Practice Questions (Page 1)

Questions 1–5

1. 1application · medium

   A team is developing a new microservice that processes financial transactions. They have written unit tests that mock external dependencies and test the service's logic in isolation. Now they want to test the service with the real database and message queue. What is the primary benefit of this integration-level dynamic test?

   • AIt is only useful for performance testing, not for functional validation.
   • BIt is a static testing activity because it involves reviewing the service's configuration.
   • CIt replaces the need for unit tests because it tests the entire system at once.
   • DIt validates the service's behavior when interacting with real components, revealing integration defects.
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2. 2application · medium

   A test engineer is asked to verify that a new authentication module correctly rejects invalid passwords. The engineer has access to the module's source code and a running instance of the application. Which action best represents dynamic testing?

   • ARead the authentication module's code to check for correct password validation logic.
   • BReview the requirements document to confirm the expected error message for invalid passwords.
   • CSubmit a series of invalid passwords through the application's login interface and observe the responses.
   • DAsk the developer if the module has been tested with invalid passwords.
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4. 3expert · hard

   A performance test team is testing a new API that is expected to handle 2,000 requests per second. During the test, they observe that the API returns a 503 error for 5% of requests when the load reaches 1,500 requests per second. The team is debating whether this is a performance defect or a functional defect. Which approach best resolves this question?

   • AClassify the 503 errors as a performance defect because they occur under load.
   • BInvestigate the 503 errors to determine if they are caused by resource exhaustion or by incorrect handling of concurrent requests.
   • CClassify the 503 errors as a functional defect because they are HTTP errors.
   • DIgnore the 503 errors because they only affect 5% of requests.
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5. 4expert · hard

   A performance test team is testing a new web application. They have a test script that simulates user sessions. During the test, they notice that the application's response time is acceptable, but the error rate is high for a specific transaction. The team is considering whether to stop the test and investigate or continue the test to collect more data. Which action is most appropriate?

   • AIncrease the load to see if the error rate improves.
   • BContinue the test but simultaneously investigate the high error rate for the specific transaction.
   • CStop the test immediately to investigate the error rate before collecting more data.
   • DIgnore the error rate because the response time is acceptable.
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6. 5application · medium

   A performance test engineer is designing a load test for a new mobile banking application. The goal is to determine if the backend can handle 1,000 concurrent users during peak hours. The engineer has written a script that simulates user login, balance inquiry, and fund transfer. What is the most critical next step to ensure the test provides valid performance data?

   • AAsk the development team to enable debug logging on the application server.
   • BReview the script's code to ensure all API endpoints are correctly referenced.
   • CExecute the script against the test environment and collect response time and throughput metrics.
   • DConfirm that the test environment has the same hardware specifications as production.
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