Which two networking requirements are true about the node types in a vRealized Operations (vROps) cluster? (Choose two.)

Which two networking requirements are true about the node types in a vRealized Operations (vROps) cluster? (Choose two.)
A . Analytics cluster nodes must be on separate VLANs as long as they are in the same cluster
B . All node types including remote collectors must be bi-directionally routable by IP address or FQDN
C . All vROps cluster node types must be configured with dynamic IP addresses
D . An underscore must NOT be included in the hostname of any cluster node

Answer: B,D

Explanation:https://docs.vmware.com/en/vRealize-Operations-Manager/6.5/vrealize-operations-manager-65-linux-install-guide.pdf (p.20)