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Case Study: 2
Contoso Ltd
Overview
General Overview
Contoso, Ltd., is a scientific research and supply company that has offices along the east
coast of North America. The company recently completed an upgrade to Exchange Server
2013.
Physical Locations
The company has three sales offices and a research office. The sales offices are located in
Atlanta, New York, and Montreal. The research office is located in Miami.
Existing Environment
Active Directory Environment
The network contains one Active Directory forest named contoso.com. The Miami office has
its own domain named research.contoso.com.

Each office is configured as an Active Directory site. Each site contains two domain
controllers that run Windows Server 2008 R2 x64. All of the FSMO roles for contoso.com are
owned by a domain controller in the New York site. All of the FSMO roles for the
research.contoso.com domain are owned by a domain controller in the Miami site.
One domain controller in each site is configured as a global catalog server. All of the domain
controllers are configured as DNS servers.
The functional level of the forest and domains is Windows Server 2008 R2.
Network Infrastructure
All client computers are configured to connect to the DNS servers in their respective office
only.
Contoso.com has a standalone certification authority (CA) on a server that runs Windows
Server 2008 R2.
All offices connect to the New York office by using a high-speed WAN link.
Email Infrastructure
The Exchange Server 2013 organization contains four servers in the New York office. The
servers are configured as shown in the following table.

All external access for the contoso.com organization is provided through an Internet link at
the New York office. Load balancing is provided by using DNS round robin. All inbound and
outbound email for the domain is routed through a mail appliance in the New York office.
The Exchange Server 2013 organization contains four servers in the Atlanta office. The
servers are configured as shown in the following table.

The file share witness for NY-DAG is on a file server in the Atlanta office.
The Exchange Server 2013 organization contains two servers in the Montreal office and two
servers in the Miami office. The servers are configured as shown the following table.

All external access to the organization of the research.contoso.com domain is provided
through the Internet link at the Miami office. Load balancing is provided by using DNS round
robin. All inbound and outbound email for the domain goes through an email appliance in
the Miami office.
All Exchange Server 2013 servers run Windows Server 2012 Standard.
All users have Windows Phone devices that connect to the Exchange organization by using
Exchange ActiveSync.
User Issues
You discover the following user issues:
• Some users report that, intermittently, they fail to connect to their email from their
Windows Phone device.
• Some users from the New York office report that some searches from Outlook Web
App return incomplete results.
• Some of the users in each office report that they fail to access their mailbox during
the maintenance period of the Active Directory domain controllers.
You verify that all of the remote users can connect to the network successfully by using a
VPN connection, and can then launch Outlook successfully.

Partnerships
Contoso recently entered into a partnership with a company named A. Datum Corporation.
A Datum has a main office and four branch offices. The main office is located in Toronto.
A Datum has a messaging infrastructure configured as shown in the following table.

Requirements
Planned Changes
Contoso plans to deploy a hardware load balancer in the New York office. The load balancer
must bridge all SSL connections to the Exchange servers.
You plan to deploy two new Exchange Server 2013 servers in a virtual server environment in
the Miami office. The servers will host a few mailboxes as part of an evaluation of resource
utilization for virtualized Exchange servers.
You also plan to deploy a high availability solution for Mailbox servers in the
You plan to replace the email appliance in New York because of recent power outages.
Business Requirements
Contoso identifies the following business requirements:
• Minimize the hardware costs required for a load balancing solution.
• Minimize the software costs required for a load balancing solution.
• Minimize user interruptions if a service fails on a Mailbox server.
• Minimize user interruptions if a service fails on a Client Access server.
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You need to resolve the search issue reported by the users in the New York office. You restart the
Microsoft Exchange Search service and discover that the active copy of the mailbox database has a
content indexing status of Unknown. What should you do next?

A.
Rebuild the content index.

B.
Run the Update-MailboxDatabaseCopy cmdlet and specify the -manualresume parameter.

C.
Restart the Microsoft Exchange Mailbox Replication service.

D.
Run the Update-MailboxDatabaseCopy cmdlet and specify the -catalogonly parameter.