DRAG DROP
Your network contains four servers that run Windows Server 2012 R2.
Each server has the Failover Clustering feature installed. Each server has three network adapters
installed. An iSCSI SAN is available on the network.
You create a failover cluster named Cluster1. You add the servers to the cluster.
You plan to configure the network settings of each server node as shown in the following table.
You need to configure the network settings for Cluster1.
What should you do?
To answer, drag the appropriate network communication setting to the correct cluster network.
Each network communication setting may be used once, more than once, or not at all. You may
need to drag the split bar between panes or scroll to view content.
Answer: 
Explanation:
Allow cluster network communication for heartbeats.
Note: Heartbeats
The Cluster service, running on each node of the cluster, keeps track of the current state of the
nodes within a cluster and determines when a group and its resources fail over to an alternate node.
This communication takes the form of messages that are sent regularly between each node’s Cluster
service. These messages are called heartbeats.Network communication between nodes
http://technet.microsoft.com/en-us/library/cc787135(v=WS.10).aspx