What must occur before adding one or more spoke servers to the hub server?
A . grant administrativeprivileges to spoke servers
B . define hub server as the target server
C . install IBM Spectrum Protect Operations Center on spoke servers
D . define server-to-server communications between hub and spoke severs
Answer: D
Explanation:
When you install the IBM Spectrum Protect server, the default configuration requires secure communication by using the Secure Sockets Layer (SSL) or Transport Layer Security (TLS) protocol. Unless this requirement was disabled for both the hub and the spoke servers, you must add the certificate of the spoke server to the truststore file of the hub server.
References:https://www.ibm.com/support/knowledgecenter/SSEQVQ_8.1.0/srv.solutions/t_msdisk_add_spoke.html