ABC.com boasts a two-node Network Load Balancing cluster which is called web.CK1.com.
The purpose of this cluster is to provide load balancing and high availability of the intranet
website only.
With monitoring the cluster, you discover that the users can view the Network Load
Balancing cluster in their Network Neighborhood and they can use it to connect to various
services by using the name web.CK1.com.

You also discover that there is only one port rule configured for Network Load Balancing
cluster. You have to configure web.CK1.com NLB cluster to accept HTTP traffic only.
Which two actions should you perform to achieve this objective? (Choose two answers.
Each answer is part of the complete solution)

A.
Create a new rule for TCP port 80 by using the Network Load Balancing Cluster console

B.
Run the wlbs disable command on the cluster nodes

C.
Assign a unique port rule for NLB cluster by using the NLB Cluster console

D.
Delete the default port rules through Network Load Balancing Cluster console

Explanation:
http://technet.microsoft.com/en-us/library/cc733056.aspx
Create a new Network Load Balancing Port Rule
Port rules control how a Network Load Balancing (NLB) cluster functions. To maximize
control of various types of TCP/IP traffic, you can set up port rules to control how each port’s
cluster-network traffic is handled. The method by which a port’s network traffic is handled is
called its filtering mode. There are three possible filtering modes: Multiple hosts, Single host,
and Disabled.
You can also specify that a filtering mode apply to a numerical range of ports. You do this by
defining a port rule with a set of configuration parameters that define the filtering mode. Each
rule consists of the following configuration parameters:
The virtual IP address that the rule should apply to
The TCP or UDP port range that this rule should apply to
The protocols that this rule should apply to, including TCP, UDP, or both
The filtering mode that specifies how the cluster handles traffic, which is described by the
port range and the protocols
In addition, you can select one of three options for client affinity: None, Single, or Network.
Single and Network are used to ensure that all network traffic from a particular client is
directed to the same cluster host.
To allow NLB to properly handle IP fragments, you should avoid using None when you select
UDP or Both for your protocol setting. As an extension to the Single and Network options,
you can configure a time-out setting to preserve client affinity when the configuration of an
NLB cluster is changed. This extension also allows clients to keep affinity to a cluster host
even if there are no active, existing connections from the client to the host.