To answer this question, you need to understand the process of automatically correlating after recording in performance testing.
Before attempting to automatically correlate after recording, you must perform the following step:
B) Play back the script at least one time
Explanation:
During the playback of the script, the performance testing tool records all the dynamic values and correlations required for subsequent iterations. It captures the values exchanged between the client and server, allowing you to identify and extract the dynamic values that need to be correlated.
Options:
A) Enable the Auto Correlation feature - This option is incorrect because enabling the Auto Correlation feature alone is not sufficient. It is important to play back the script first to capture the dynamic values.
C) Ensure the snapshots are visible in the Tree view - This option is incorrect because although it is important to have the snapshots visible in the Tree view for analysis, it is not a prerequisite for attempting to automatically correlate after recording.
D) Add the web_auto_correlation function to the global.h section - This option is incorrect because adding the web_auto_correlation function to the global.h section is not necessary for attempting to automatically correlate after recording.
The correct answer is B) Play back the script at least one time. This option is correct because playing back the script allows the performance testing tool to capture the dynamic values that need to be correlated.