Which three actions should you recommend?

###BeginCaseStudy###
Case Study: 2
A)
Datum
Overview
General Overview
A)
Datum Corporation is a pet supply company that has stores across North
America.
A)
Datum has an Exchange Server 2007 organization. A. Datum plans to migrate to
Exchange Server 2013.
Physical Locations
A)
Datum has five locations. The locations are configured as shown in the following
table.

Existing Environment
Network Infrastructure
All of the locations connect to the each other by using a WAN link. The New York,
Toronto, and Chicago locations connect directly to the Internet.
All client computers run Windows 7 and Office 2010. All servers run Windows Server
2008.
Active Directory Environment
The network contains an Active Directory domain named adatum.local. Adatum.local
is the corporate domain based in the United States. The network contains a domain
named
Canada.adatum.local. Canada.adatum.local is the domain for the stores in Canada.
Each location is configured as an Active Directory site.
The forest functional level is Windows Server 2008.

The main office and both of the distribution centers each has two domain controllers
for their respective domain. All of the other locations have one domain controller for
their respective domain. All of the domain controllers are global catalog servers.
Exchange Infrastructure
The main office and the distribution centers each have three servers that have
Exchange Server 2007 installed.
The servers have the following configurations:
Two of the servers have cluster continuous replication (CCR) deployed
One of the servers has the Client Access server role and the Hub Transport server
role installed Each store contains a server that has Exchange Server 2007 installed.
Each server has mailboxes for active users and mailboxes for inactive users. Each
server has approximately 50 mailboxes.
Remote users access Outlook Web Access by using a namespace of
mail.adatum.com, which resolves to the Client Access server in the New York office.
Requirements
Planned Changes
The company plans to implement the following changes:
Migrate all of the mailboxes in the main office and the distribution centers to
Exchange Server 2013.
Integrate a new telephone system to the Exchange Server 2013 organization.
Deploy a standalone certification authority (CA) that will be used to issue all of the
certificates for the messaging infrastructure.
Technical Requirements
The company identifies the following technical requirements:
Hardware costs must be minimized whenever possible.
The impact on end users if a site fails must be minimized.
Voice mail traffic between the telephone system and the Exchange Server
environment must be encrypted.
Each user must be able to access the internal resources and their mailbox by using
a single user account.
Compliance Requirements
After a security review, the company identifies the following compliance
requirements for the new Exchange Server environment:
All administrative changes made to the mailboxes must be tracked.
The legal department must be able to search for messages in all of the mailboxes.
Users must be prevented from sending email during an upcoming statutory holiday.
All store managers must be prevented from permanently deleting email messages
from their Inbox.
All email messages must be archived for a minimum of five years to meet regulatory
requirements.
Management occasionally sends the staff internal memos that contain confidential
information, such as sales figures. The memos must be protected so that
unauthorized users cannot read the memos and internal users cannot forward the
memos to external recipients.
The users in the research department must be able to send email to anyone in the
organization, but only the members of a group named Execs must be able to send
email to the research users. All other users must be notified that email sent to the
research users will remain undelivered.
###EndCaseStudy###

You are creating a contingency plan to be implemented if the entire New York site fails after
Exchange Server 2013 is deployed.
You need to recommend which tasks must be performed to ensure that all of the users can access
Outlook Web App from the Chicago site if the New York fails.
Which three actions should you recommend? (Each correct answer presents part of the solution.
Choose three.)

A.
On the Client Access server in the Chicago site, set the ExternalURL of Outlook Web App to
mail.adatum.com.

B.
On the Mailbox server in the Chicago site, set the ExternalURL of Outlook Web App to
mail.adatum.com.

C.
Modify the host (A) record for mail.adatum.com to point to the Client Access server in the Chicago
site.

D.
On the Client Access server in the Chicago site, set the internal URL of Outlook Web App to
mail.adatum.local.

E.
Install the mail.adatum.com certificate and private key on the Client Access server in the Chicago
site.

Explanation:
A) Example: To configure an external URL for Outlook Web App, run the following command in
Exchange Management Shell. Set-OwaVirtualDirectory “<CAS2013>\OWA (Default Web Site)” –
ExternalUrl https://mail.contoso.com/OWA
C) Need a new record in the DNS.
E) In Exchange 2013, you can use the Certificate Wizard to request a digital certificate from a
certification authority. After you’ve requested a digital certificate, you’ll need to install it on the
Client Access server.
Reference: Exchange 2013 Client Access server configuration