Friday, September 25, 2026

Question of the day

One fresh CCA-F question, every day — commit to an answer, then read the explanation for every option. Come back tomorrow for a new one.

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D5 · Q1stateless API state
You built a customer-support assistant directly on the Claude Messages API. In turn 6 the model no longer 'remembers' a preference the user stated in turn 2, even though your logs show turn 2 was handled correctly. Your backend stores each request and response in a database keyed by conversation ID. What is the most likely root cause?