問題文
A rack of GPU servers has just been installed and cabled. The project plan lists several activities: configuring the management controllers, updating firmware, installing the cluster software, and running acceptance tests. A new engineer asks why the management controllers come before everything else in the plan. What is the reason?
選択肢
- Later activities depend on being able to power and inspect each server remotely, which is what those controllers provide.
- Firmware can only be read once the controllers are configured, so the update step in the plan has to wait for them and the ordering follows from that alone.
- Those controllers hold the license that the cluster software validates during its own installation, so the installer refuses to proceed until every controller in the rack has been reached at least once.
- The controllers have to be configured while the servers are still powered off, and this is the only point in the schedule at which the whole rack is guaranteed to be down simultaneously.