Implementation CT-PT Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   How does concurrency differ from throughput in performance testing?

   • AConcurrency and throughput are the same concept measured in different units
   • BConcurrency is the rate of transactions, while throughput is the number of simultaneous users
   • CConcurrency is the number of simultaneous users, while throughput is the rate of completed transactions
   • DConcurrency is the response time, while throughput is the number of users
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2. 17expert · hard

   A performance test engineer is running a load test on a payment gateway API. The script sends a payment request and expects a response with a transaction ID. Some requests fail with a timeout error, and the engineer suspects the server is occasionally slow. The engineer wants to ensure that the script does not abort the entire test on a timeout, but instead logs the failure and continues with the next iteration. Which approach should the engineer implement?

   • AConfigure the script to catch timeout exceptions, log the error, and continue to the next iteration without retrying.
   • BRemove the timeout setting from the script so the request waits indefinitely.
   • CIncrease the timeout value for the request to avoid timeouts altogether.
   • DAdd an assertion that checks for the transaction ID, and if it is missing, abort the entire test.
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4. 18foundation · easy

   In performance testing, what does 'throughput' measure?

   • AThe time taken for a single request to travel from client to server and back
   • BThe total amount of data stored in the system's database
   • CThe rate at which the system processes requests or transactions over a period of time
   • DThe number of concurrent users actively interacting with the system
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5. 19expert · hard

   A performance test engineer is scripting a test for a web application that uses a CSRF token in forms. The token is generated by the server and embedded in the HTML of the login page. The script must capture this token and send it with the login request. The engineer notices that the token changes with each page load. Which approach should the engineer use to handle this dynamic value?

   • AUse a correlation rule to extract the CSRF token from the login page response and store it in a variable, then use that variable in the login request.
   • BDisable CSRF validation in the application to simplify the script.
   • CAdd an assertion to verify that the CSRF token is present in the login page response.
   • DParameterize the CSRF token using a data file with a list of valid tokens.
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6. 20expert · hard

   A performance test engineer is scripting a test for a search application. The script currently uses a single search term for all virtual users, which causes the server to cache the results and artificially inflate throughput. The engineer needs to simulate realistic user behavior by using a variety of search terms. However, the test data file contains only 50 unique search terms, and the test will run with 500 virtual users. Which approach should the engineer take to ensure realistic behavior without exhausting the data?

   • AUse a unique search term for each virtual user by generating random strings in the script.
   • BRemove the search step from the script to avoid the caching issue.
   • CIncrease the number of virtual users to 500 and use the same search term for all users.
   • DConfigure the parameterization to use random selection from the data file, allowing reuse of search terms across virtual users.
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