Your network contains two Web servers named Server1 and Server2.
Both servers run Windows Server 2012 R2.
Server1 and Server2 are nodes in a Network Load Balancing (NLB) cluster.
The NLB cluster contains an application named App1 that is accessed by using the URL
http://app1.contoso.com.
You plan to perform maintenance on Server1.
You need to ensure that all new connections to App1 are directed to Server2.
The solution must not disconnect the existing connections to Server1.
What should you run?
A.
The Set-NlbCluster cmdlet
B.
The Set-NlbClusterNode cmdlet
C.
The Stop-NlbCluster cmdlet
D.
The Stop-NlbClusterNode cmdlet
Explanation:
The Stop-NlbClusterNode cmdlet stops a node in an NLB cluster. When you use the stop the nodes
in the cluster, client connections that are already in progress are interrupted.
To avoid interrupting active connections, consider using the -drain parameter, which allows the
node to continue servicing active connections but disables all new traffic to that node.
-Drain <SwitchParameter>
Drains existing traffic before stopping the cluster node.
If this parameter is omitted, existing traffic will be dropped.
Correct
https://technet.microsoft.com/en-us/library/ee817127.aspx
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Why? The question is asking you to ensure that new connections to App1 are directed to Server 2. Stop-NlbCluster will interrupt the traffic to Server1, but won’t do anything about redirecting it.
Set-NlbClusterNode allows you to reconfigure host priority. So wouldn’t it make more sense to go with this option?
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You do config host priority and then what? You dont even know whether it’s multiple/single etc. You must assume the cluster is properly configured and functioning. By stopping the node, the traffic will automatically get redirected by the cluster’s configs, without disconnections.
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Correct, use Stop-NlbClusterNode -Drain
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