問題文
During an operational review of an accelerated data center, a manager asks which network an operator uses to power-cycle an unresponsive node, and which one carries the gradient exchange of a distributed training job. Which pairing is correct?
選択肢
- Power control goes over the out-of-band network; the gradient exchange goes over the storage fabric, and the nodes already share it for checkpoints.
- Power control goes over the out-of-band management network; the gradient exchange goes over the compute fabric.
- Both go over the compute fabric, since it has the lowest latency and a separate management path would only add a second network to keep running.
- Power control goes over the in-band management network, which is the network that carries node provisioning and administrative traffic and is therefore also the one that reaches a node whose operating system has stopped responding.