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Databricks Certified Machine Learning Professional · Databricks
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- Correct answer : A — All 4 processes run on the single driver machine, since `local_mode=True` confines TorchDistributor to launching multiple processes on one node. A . Correct: `local_mode=True` tells TorchDistributor to launch the specified number of processes on a single machine, so all 4 GPU processes run on the driver rather than being spread across workers. B . Spreading one process per worker node is the behavior of multi-node mode (`local_mode=False`), not local mode, which intentionally keeps every process on one machine. C . `use_gpu` only controls whether processes use GPU devices; it does not override `local_mode`, which independently governs whether execution stays on one node or spans the cluster. D . `num_processes` in local mode specifies how many processes run on the single local machine and has no required relationship to the number of worker nodes in the cluster.