Your flex cluster has these attributes: 1. Hub nodes host01 and host02 2. Leaf nodes host03 and host04 3. Full Featured GNS is configured and running. You attempt to run this command to add two more nodes to the cluster: $ ./addnode.sh –silent "CLUSTER_NEW_NODES={host05,host06}" "CLUSTER_NEW_NODE_ROLES={hub,leaf}" What is the result and the reason for this result? 

Answer options:

A. It fails because no VIP was specified for the hub node host05.
B. It fails because hub and leaf nodes may not be added by the same execution of addNode.sh.
C. It fails because GNS doesn’t assign VIPs for leaf nodes and no VIP was specified in the command.
D. It succeeds because no VIP specification is required for leaf nodes and none need to be specified for hub nodes when using full featured GNS.

A

Hub Nodes always have VIPs. Incorrect Answers: C: Hub Nodes always have VIPs but Leaf Nodes may not. B: Use the CLUSTER_NEW_NODE_ROLES parameter to indicate, in an Oracle Flex Cluster, whether the node you are adding is a Hub Node or a Leaf Node. You can add multiple nodes, as follows: $ addnode.sh -silent -noCopy ORACLE_HOME=Grid_home "CLUSTER_NEW_NODES={node2,node3,node4}" "CLUSTER_NEW_VIRTUAL_HOSTNAMES={node2-vip,node3-vip,}" "CLUSTER_NEW_NODE_ROLES={HUB,HUB,LEAF}" In the preceding syntax example, Node 4 is designated as a Leaf Node and does not require that a VIP be included. References: https://docs.oracle.com/database/121/CWADD/clonecluster.htm#CWADD92139