What is Concurrency Testing ?
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Multi-user testing geared towards determining the effects of accessing the same application code, module or database records. Identifies and measures the level of locking, deadlocking and use of single-threaded code and locking semaphores.
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Concurrently designing & testing the application.
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Single user testing, determining the effects of accessing the same application.
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Mainly concurrency testing refers to testing the application once it is fully designed.
Concurrency testing is multi-user testing that evaluates what happens when multiple users or processes access the same application code, module, or database records simultaneously. It identifies locking issues, deadlocking problems, and single-threaded code that should be multi-threaded. Option A correctly describes this testing approach. Options B, C, and D incorrectly describe concurrent design, single-user testing, or post-design testing - none of these capture the essence of concurrency testing.