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Case Study
This is a case study. Case studies are not timed separately. You can use as much exam time as you would like to complete each case. However, there may be
additional case studies and sections on this exam. You must manage your time to ensure that you are able to complete all questions included on this exam in the
time provided.
To answer the questions included in a case study, you will need to reference information that is provided in the case study. Case studies might contain exhibits and
other resources that provide more information about the scenario that is described in the case study. Each question is independent of the other question on this
case study.

At the end of this case study, a review screen will appear. This screen allows you to review your answers and to make changes before you move to the next
sections of the exam. After you begin a new section, you cannot return to this section.
To start the case study
To display the first question on this case study, click the Next button. Use the buttons in the left pane to explore the content of the case study before you answer the
questions. Clicking these buttons displays information such as business requirements, existing environment, and problem statements. If the case study has an All
Information tab, note that the information displayed is identical to the information displayed on the subsequent tabs. When you are ready to answer a question, click
the Question button to return to the question.
Overview
Background
Alpine Skihouse designs and manufactures skis and ski accessories. The corporate headquarters for the company is located in London. The company has a design
office in Rome and sales offices in Paris, Los Angeles, and Boston. The design team director works in the Rome office.
The company plans to implement Skype for Business Server 2015 to address their unified communications needs. The company currently has traditional PBX
implementations in each office location and uses a dial-in conferencing system that is hosted on their internal PBX.
The number of users in each office is shown in the following table:

Remote connectivity to all corporate resources and services is provided by SSL virtual private network (VPN) only. The current VPN solution tunnels all traffic to the
office. Internet facing services cannot be reached directly from users’ laptops when they are traveling.
Problem statements
During the requirements gathering process for the Skype for Business deployment project, users reported the following issues:
Users based in the United States report that they experience poor audio and video quality when they conduct meetings with users that are not located in the
United States.
Users based in the United States report that they experience poor audio and video quality when they conduct meetings and calls while they remotely connected to
the office.
The design team director would like customers to be greeted in the Italian language when they use dial-in conferencing to join meetings.
The sales team director organizes daily alignment meetings with local sales teams. He reports that there are issues with the quality of the audio and video.
Proposed solution
London
The following table shows the proposed London Skype for Business Server 2015 server architecture and IP addresses:

The following table shows the proposed Rome Skype for Business Server 2015 server architecture and IP addresses:

Los Angeles
The following table shows the proposed Los Angeles Skype for Business Server 2015 server architecture and IP address:

Requirements
Business requirements
The company has identified the following business requirements:
Users must be able to access all Skype for Business services when they work remotely.
The solution must support meetings with up to 10,000 users.
The solution must be highly available, and must withstand the loss of a single component at any point in time with as little interruptions of service as possible.
The language used by Skype for Business services must be localized wherever possible.
The leadership team in the Americas regions hosts an AllHands meeting for all employees four times per year. All employees are requested to join this meeting.
You must not install any additional servers to support this requirement.

Technical requirements
The company has identified the following technical requirements:
The SQL team has completed an upgrade of the entire SQL Server to the latest version. They require every SQL Server to use a SQL AlwaysOn Availability
Group as the high availability (HA) option.
There is no data center within the Boston site.
You must use the secondary data center in London to minimize the impact to users in the event of a single-site disaster.
Media traffic must only be encrypted once.
You must use the Skype for Business Management ShellInvoke-CsComputerFailOverandInvoke-CsComputerFailBackcmdlets to perform maintenance actions
during daily operations.
You must implement Domain Name System (DNS) load balancing wherever possible.
You need to deploy the Edge Servers in the Rome location. Which action should you
suggest before publishing the topology?
A. Enable Direct Access on the Edge Server for users in the Americas region.

B. Change the server locale to Italian.

C. Change the server name of the Edge Server in Rome.

D. Change the External A/V Edge NAT-enabled public address.

Explanation:
The same IP (64.4.6.100) is used for both the London and Rome External A/V Edge NAT-enabled public addresses. One of them needs to be corrected.

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