フリー問題

問題文

A data center that already runs enterprise applications is being extended with a cluster of accelerator nodes. The nodes will exchange data with each other during every training step, and the design has to keep that exchange away from the traffic of the existing applications. What does the design add for this?

選択肢

1. A separate network whose only members are the accelerator nodes and the storage they read, so the exchange between the nodes stays off the links that the existing applications use.
2. A separate pair of switches for the accelerator nodes at the aggregation layer, so the exchange between the nodes reaches the existing applications through one hop instead of two.
3. A separate group of addresses for the accelerator nodes inside the existing network, so the exchange between the nodes can be recognized by its addresses, and counted apart from the existing applications.
4. A separate queue for the accelerator nodes on every existing switch, so the exchange between the nodes is served before the traffic of the existing applications on each shared link.