How is the node name that is specified in the dsm.opt file used by the IBM Spectrum Protect server?

How is the node name that is specified in the dsm.opt file used by the IBM Spectrum Protect server?
A . to identify the client operation system
B . to encrypt the client data files
C . to identify the client and grant access
D . to select the target storage pool

Answer: C

Explanation:

Register your workstation with a server

Before you can use IBM Spectrum Protect, you must set up a node name and password and your node must be registered with the server.

References:https://www.ibm.com/support/knowledgecenter/en/SSEQVQ_8.1.0/client/c_cfg.html