Buffer storage is often necessary to regulate ______ between two processes that have different production rates.

Buffer storage is often necessary to regulate ______ between two processes that have different production rates.

• A. Quality
• B. Inventory
• C. Time
• D. Flow

Answer: (D)

This question tests decoupling of processes to smooth the transfer of material between steps that run at different speeds. A buffer stores work between the two processes so the upstream operation can continue at its own rate without forcing the downstream step to wait or get overwhelmed. This keeps the flow steady, reduces stoppages caused by rate mismatch, and helps the overall system run more reliably. Quality isn’t about matching and smoothing the transfer rate, and while a buffer is a kind of inventory, the key idea here is regulating the rate at which material moves between processes. Time is affected by flow, but the primary function of a buffer is to maintain a steady flow between steps with different production rates.

This question tests decoupling of processes to smooth the transfer of material between steps that run at different speeds. A buffer stores work between the two processes so the upstream operation can continue at its own rate without forcing the downstream step to wait or get overwhelmed. This keeps the flow steady, reduces stoppages caused by rate mismatch, and helps the overall system run more reliably.

Quality isn’t about matching and smoothing the transfer rate, and while a buffer is a kind of inventory, the key idea here is regulating the rate at which material moves between processes. Time is affected by flow, but the primary function of a buffer is to maintain a steady flow between steps with different production rates.