Explanation/Reference:
References: https://docs.microsoft.com/en-us/skypeforbusiness/manage/conferencing/conferencing Testlet 1 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.
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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 All Hands 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.