Which of the following statements about the open protocol of the NDMP for network backup is independent of the platform data storage?

Which of the following statements about the open protocol of the NDMP for network backup is independent of the platform data storage?
A . The NAS device that supports the NDMP protocol can directly communicate with the backup server without installing the backup software client on the NAS device.
B . When the NDMP protocol is used, the backup software, NAS devices, backup media, and production servers must support the NDMP protocol.
C . During the backup, the NAS device transfers files and directories related to the backup media to the backup server. The backup server prepares indexes for maintenance.
D . Backup data can be read from NAS storage devices and backed up to backup media instead of production servers. This reduces the workload on production servers.

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Answer: A