Overview
General Overview
ADatum is an international logistics company that has 12,000 employees. The company has a sales department, a marketing department, a human resources department, a finance department, and an operations department.
Physical Locations
ADatum has four offices located throughout the world.
ADatum has two data centers. The data centers are located in New York and Toronto. All communications are routed through the New York and Toronto data centers.
The number of users in each office is shown in the following table:

Existing Environment
Active Directory environment
ADatum has an Active Directory Domain Services (AD DS) forest named adatum.com.
The forest contains a single domain. All domain controllers run Windows Server 2012 R2.
Each office contains redundant domain controllers. Each office is configured as an AD DS site.
Lync Server environment
ADatum has a Lync Server 2013 infrastructure that contains Two pools. There is one pool in the New York data center and one pool in the Toronto data center. These pools are in a pairing relationship for site resiliency.
In preparation for the Skype for Business Server update, you install the required prerequisite components on all Lync Server 2013 servers.
There is a dedicated management computer named NYCMGMT1 in the New York office that has Lync Server 2013 administrative tools installed.
All company users are evenly distributed across the New York and Toronto pools.
The servers are configured as shown in the following tables:


Both data centers have a complete set of redundant load balancers and reverse proxies.
Internal and external URLS.
The Lync Server 2013 Web Services and Office Web Apps Server 2013 farm for both New York and Toronto pools use the following internal and external URLs:

Reverse Proxy Rules
You use the following reverse proxy rules to publish external access for the New York pool:

Unused servers
The Sydney and Stockholm offices each have a server room. The following is the list of unused servers in the server rooms:


SIP Domain and firewall
The SIP domain is adatum.com.
ADatum has a Microsoft Office 365 subscription. The company recently completed an upgrade to Exchange Server 2013. In-Place hold is not in use.
ADatum is federated with Fabrikam. Inc. The configuration information is shown below:

Firewall configuration on the edge firewall facing to the Internet from both perimeter networks in New York and Toronto allows connection to Any IP addresses in the Internet on port TCP/5061.
Problem statements
All external users that are homed in the New York pool reported that they have issues with uploading PowerPoint presentations during conferences.
The PowerPoint upload issue is affecting all internal users that are homed in the Toronto pool.
Users in the Sydney office report poor audio and video quality during conferences. Desktop sharing during conferences also exhibits poor performance.
Business requirements
The company has identified the following business requirements:
The Sales and marketing departments must have the ability to interact with various suppliers and

customers that use Skype Consumer. To enhance the capability, users from sales and marketing departments would like to be able to look up additional Skype Consumer contact details.
The company wants to improve the conferencing experience for users in the Sydney office.

ADatum recently acquired a local logistic company in Australia and is planning to rebrand the business

in the Asia pacific market. The rebranded business with operate under the name Wide World Importer.
The acquired company has an existing video teleconferencing (VTC) solution from Cisco/Tandberg.

ADatum wants to minimize the cost of any changes to the infrastructure.

A consultant that works from the Stockholm office will oversee the deployment of any new services.

Technical requirements
The company has identified the following technical requirements:
Any new infrastructure must be deployed to support high availability.

All users in Sydney will use the new email and SIP domain.

All federation traffic for the SIP domain wideworldimporters.com must route through the infrastructure in

the Sydney office.
All conferencing capabilities must be available in the event of wide area network (WAN) link failure.

Only users in the sales and marketing departments must be able to federate with Skype consumer.

ADatum uses third party identity providers to federate with Azure Active Directory.

You must integrate Microsoft Exchange with Skype for Business to archive Skype for Business data in

user mailboxes.
You must use wideworldimporters.com as the email and SIP domain for rebranded business.

You must implement archiving for all skype for business users. You must not make changes to existing

Microsoft exchange functionality.
You configure Skype Directory Search after you upgrade all pools to Skype for Business Server 2015.
Sales and marketing users report that they cannot search Skype consumer contact details.
You need to resolve the issue.
Which outbound connections should you allow?