Your company named Contoso, Ltd. has a two-node Network Load Balancing cluster. The cluster is
intended to provide high availability and load balancing for only the intranet Web site. The name of
the cluster is web.contoso.com. You discover that Contoso users can see the Network Load
Balancing cluster in the network neighborhood and can connect to various services by using the
web.contoso.com name. The web.contoso.com Network Load Balancing cluster is configured with
only one port rule. You need to configure the web.contoso.com Network Load Balancing cluster to
accept only HTTP traffic. Which two actions should you perform? (Each correct answer presents part
of the solution. Choose two.)

A.
Log on to one of the cluster nodes and run the wlbs disable all command.

B.
Open the Network Load Balancing Clusters console and delete the default port rules.

C.
Open the Network Load Balancing Clusters console and create a new Allow rule for TCP port 80.

D.
Open the Network Load Balancing Clusters console and change the default port rule to
a disabled port range rule.

Explanation:

The following procedure describes how to configure NLB on the Web tier for a typical deployment.
To configure NLB on the Web tier Open properties for the front-end adapter (for communicating
with clients on the Internet). In Network Load Balancing Properties dialog box, on the Cluster
Parameters tab, type the Primary IP address (the virtual IP address shared across all cluster
members), Subnet Mask, and Full Internet name. In Network Load Balancing Properties dialog box,
on the Host Parameters tab, type the Priority (Unique host ID), Dedicated IP address, and Subnet
Mask In Network Load Balancing Properties dialog box, on the Port Rules tab, remove the default
port rule covering ports 0 to 65535 by selecting the port rule, then clicking Remove. Create a port
rule for HTTP using the information in the following table, and then click Add.
Source: http://technet.microsoft.com/en-us/library/ee784931(CS.20).aspx