###BeginCaseStudy###
Case Study: 6
Trey Research

Overview
Trey Research is a pharmaceutical company that has 10,000 users. Most of the users work remotely,
including the users in the finance department. The finance department users reside in an
organizational unit (OU) named Finance.
Trey Research purchases a partner pharmaceutical company named Fabrikam, Inc. Fabrikam has
2,000 users and hosts its own Exchange Server 2010 organization.
Existing Environment
Active Directory Environment
The network of Trey Research contains an Active Directory forest. The forest contains an empty
parent domain named treyresearch.com and a child domain named main.treyresearch.com. The
forest contains one site named DefaultSite.
The Trey Research network and the Fabrikam network connect to each other by using a WAN link. A
two-way trust exists between the Trey Research and Fabrikam networks.
Trey Research Exchange Server Organization
Trey Research has an Exchange Server 2013 organization that contains four servers. The servers are
configured as shown in the following table.

EX1 and EX2 are the members of a database availability group (DAG) named DAG1.
Trey Research has three databases named DB1, DB2, and DB3. DB1 and DB2 replicate between all of
the servers in DAG1. DB3 is mounted on EX4.
The storage on EX1 and EX2 is configured as shown in the following table.

The Exchange Server 2013 servers at Trey Research are configured as follows:
• EX3 and EX4 perform spam filtering.
• The public folder hierarchy mailbox is homed on DB3.
• Each mailbox database contains a public folder mailbox.
• HTTP traffic is load balanced by using a Layer 4 hardware
load balancer.
• The hardware load balancer uses the OWA virtual directory
for health monitoring.
• On EX1 and EX2, the mailbox database files and log files are
stored on volume mount points.
• IMAP is enabled on EX4 to download email messages for a
custom help desk application.
• Remote users access their mailbox by using Outlook Web
App and Exchange ActiveSync.
• The custom help desk application uses a service account
that has a display name of Help Desk and an SMTP address of
helpdesk@treyresearch.com.
Fabrikam Exchange Server Organization
Fabrikam has an Exchange Server 2010 organization that contains two servers. The servers are
configured as shown in the following table.

Fabrikam plans to implement the address rewrite feature to change the SMTP domain name of all
outbound email to use the treyresearch.com SMTP suffix.
Problem Statements
Trey Research identifies the following issues:
• Recently on EX2, Volumel failed for three days. Once the
volume was repaired, reseeding the database from EX1 took more
than six hours.
• You recently discovered that when the
MSExchangeOWAAppPool application pool on EX3 was in a stopped
state, the hardware load balancer marked EX3 as offline.
• Users report that during the installation of updates on the
Exchange Server 2013 servers, the users lost access to their mailbox
and were unable to modify public folders.
• Several finance department users store sensitive data on
their mobile device. The legal department requires that Exchange
ActiveSync be disabled for all of the finance department users.
• An Active Directory administrator reports that the domain
controllers in the treyresearch.com domain are overused. The
administrator requests that the Exchange Server 2013 servers only
use the domain controllers in the main.treyresearch.com domain.
Requirements
Business Goal
The legal department requires that the finance department users have a segmented view of the
global address list (GAL) that only shows recipients in the finance department
Planned Changes
Trey Research plans to implement the following spam confidence level (SCL) configurations:
• Block email messages when the SCL score is 9.
• Move the email messages to the postmaster mailbox when
the SCL score is 7.
• Block email messages and send a non-delivery report (NDR)
when the SCL score is 8.
Resource Utilization Requirements
Users report that their connection to Outlook Web App is slow since the deployment of IMAP on
EX4. The users do not report that they experience performance issues when they use their mobile
device.
Trey Research reports that the IMAP service is not business critical and must not have a higher
priority over hardware resources than Outlook Web App. On EX4, Outlook Web App has the same
priority over hardware resources as Exchange ActiveSync.
###EndCaseStudy###

You need to recommend a solution to resolve the load balancing issue.
Which action or actions should you recommend performing? (Each correct answer presents part of
the solution. Choose all that apply.)

A.
From Exchange Management Shell, import a certificate and assign the certificate to the IIS service.

B.
From the settings of the hardware load balancer, enable cookie-based persistence.

C.
From Exchange Admin Center, configure the Exchange Server 2013 virtual directories.

D.
From DNS Manager, create new DNS records in the public DNS zone.

E.
From the settings of the hardware load balancer, disable the source NAT (SNAT).

F.
From EX3, generate a new certificate.