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QUESTION 16
You need to recommend a solution that will improve voice quality for Skype for Business clients. What should you recommend?

A.    Change the Voice802lp value to 46.
B.    Ensure that VoiceDiffservtag values are set to 46 for all Skype for Business Phone Edition devices at all sites.
C.    Configure an Audio and Video Quality of Service (QoS) to use a DSCP value of 40 and a port range of 57501:65535.
D.    Configure a Domain Group Policy object (GPO) configuring Quality of Service (QoS) and set it to Enforced for all Windows 7 clients.

Answer: B

QUESTION 17
You need to configure the Skype for Business Server 2015 environment to meet the technical requirements for push notifications to mobile users.
Which two actions should you perform? Each correct answer presents part of the solution.

A.    Open port 23457 on the Enterprise Wi-Fi network.
B.     Open port 5223 on the Enterprise Wi-Fi network.
C.     Configure NAME redirection over HTTPS for the acquired domain.
D.     Configure a web publishing rule for port 80 on the reverse proxy for the acquired domain.

Answer: BC

QUESTION 18
You need to allocate the current average amount of bandwidth that is required for peer-to- peer (P2P) voice calls for all three sites.
How much bandwidth in kilobits per second (Kbps) should you allocate?

A.    36,960 Kbps
B.    51,150 Kbps
C.    80,025 Kbps
D.    135,795 Kbps

Answer: B

QUESTION 19
Drag and Drop Question
You need to prepare the Quality of Service (QoS) policy for the Skype for Business environment.
Which values should you use for each configuration? To answer, drag the appropriate value or values to the correct configuration or configurations in the answer area. Each value may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content. Each correct set of answers is worth one point.

 

Answer:

 

Case Study 4 – Trey Research (QUESTION 20 – QUESTION 27)
Trey Research is a global marketing research organization that has a main office in Moscow and branch offices in Los Angeles, London, Berlin, Copenhagen, and Jakarta.

The number of users per office is shown below:
 

Existing systems and telephones
The company has existing IP-PBX systems that are reaching end of life. They use an automatic call distribution (ACD) system for their help desk. This system provides interactive voice response options to users so that they can choose the location for support. This system is also reaching end of life.

The Copenhagen office uses a call group pickup solution that runs on an existing IP-PBX system. All users with the exception of users in Copenhagen have Direct Inward Dialing (DID) numbers.

Trey Research has Skype for Business Enterprise pools in the Moscow, London, and Berlin offices, respectively. They run a Unified Communications Managed API (UCMA) based application in a trusted application pool.

All users in Trey Research are using Aries phones. Users authenticate by using PIN codes.

Quarterly global town hall meetings
Executive conduct global town hall meetings each quarter. Each meeting occurs in a different office. Employees attend the global town hall meetings in meeting rooms which are equipped with full high definition (HD) screens for video. Ten percent of the employees attend the audio portion of the global town hall meetings from their desk.
 

Trey Research plans to implement Skype for Business Enterprise Voice across the company to replace the existing IP-PBX systems.

You must use the following typical bandwidth values to determine the bandwidth requirements in kilobits per second (Kbps) for the solution:

Video resolution bandwidth:
 

Audio codec bandwidth:
 

You have the following requirements:
General
– You must reduce international long distance calling costs, and lower
support and administration costs for the IP-PBX and ACD solutions.
– You must implement voice survivability for all the sites in case of a
wide area network (WAN) link failure.
– Where possible, you must optimize media paths.
– The solution must be resilient to the failure of mediation server
pools.
– The maximum concurrent peer-to-peer connections between Moscow and
Berlin will be 196.
– Response groups must be managed by dedicated response group
administrators.

Gateways
– Existing gateways do not support the REFER method. You must use the
existing gateways with Skype for Business to provide PSTN connectivity.
– In the event of a failure of both gateways at any office, all international calls from that office must route through the Moscow gateways.

Outbound calls
– All calls placed to Russia from any office must route through the
Moscow gateways.
– Germany experiences high public switched telephone network (PSTN) call volume. All calls for Germany must breakout from Berlin in the event of Mediation Server pool failure in Berlin.
– All PSTN calls to Germany must use Berlin gateways in the event of Mediation Server pool failure in Berlin.

You test the Enterprise Voice solution with users in the Copenhagen office. During testing, users reported audio call issues related to the Call Admission Control (CAC) configuration.
The relevant portion of the current configuration is shown in the Table below:

 

You create the following policies:

 

QUESTION 20
Hotspot Question
Two users who recently joined the company’s finance department report that they are not able to use their Aries phones even when they tether the phone to their computer.
You need to design a solution for the Mediation Server pools and trunks that are required to support London, Berlin, and Moscow users.
How many of each component should you deploy? To answer, select the appropriate number of Mediation Server pools and trunks from the lists in the answer area.
 

Answer:

 

QUESTION 21
Drag and Drop Question
You need to replace the existing automatic call distribution (ACD) helpdesk with Skype for Business Server 2015 solution.
Which three actions should you perform in sequence to recreate the ACD in Skype for Business Server 2015? To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct order.

 

Answer:

 

QUESTION 22
You are troubleshooting audio call issues for users in Copenhagen.
You need to resolve the issues.
Which three actions should you perform? Each correct answer presents part of the solution.

A.    Create and configure a new network region and assign Copenhagen to this region.
B.     Create an inter-site policy which includes Copenhagen and Berlin and apply the existing BandwidthPolicyProfile “LOW”.
C.     Create an inter-site policy which includes Copenhagen and Moscow and specify the existing BandwidthPolicyProfile “LOW”.
D.     Add Copenhagen to the Berlin network region.
E.     Create and configure a new network region and assign Berlin and Copenhagen to this region.

Answer: BCE

QUESTION 23
You need to plan a solution to allow masking of a calling number.
How can a calling number of a Skype for Business user be changed to match the main number of the company?

A.    Create a new normalization rule and add it to the global dial plan.
B.    Use the Skype for Business control panel to mask the calling number.
C.    Create a trunk translation rule that masks the called number.
D.    Use the voice gateway to mask the called number.

Answer: AD

QUESTION 24
You need to configure the trunks defined in the Skype for Business topology based on the requirements.
Which two actions should you perform? Each correct answer presents part of the solution.

A.    Enable media bypass.
B.    Enable centralized media processing.
C.    Set Encryption Support Level to required.
D.    Disable REFER support.

Answer: AD

QUESTION 25
Drag and Drop Question
You need to configure the Berlin public switched telephone network (PSTN) usages and voice routes.
In which order will the PSTN usage policies be applied? To answer, move all PSTN usage policies from the list of PSTN usage policies to the answer area and arrange them in which they should be applied.

 
Answer:

 

QUESTION 26
Users in Copenhagen report frequent audio call issues.
You need to resolve the issues.
Which three actions should you perform? Each correct answer presents part of the solution.

A.    Create a new region link between the MPLS region and the Berlin region.
B.    Create and configure a new network region and assign only Copenhagen to this region.
C.    Create an inter-site policy which includes Copenhagen and Moscow and specify the existing BandwidthPolicyProfile “LOW”.
D.    Create an inter-site policy which includes Copenhagen and Berlin and apply the existing BandwidthPolicyProfile “LOW”.
E.    Create and configure a new network region and assign Berlin and Copenhagen to this region.

Answer: CDE

QUESTION 27
Drag and Drop Question
You need to replace the existing call group pickup solution in Denmark with a Skype for Business solution. You need to prepare the Skype for Business Server 2015 environment to provide call group pickup functionality.
Which three Skype for Business Management Shell cmdlets should you run in sequence? To answer, move the appropriate Skype for Business Management Shell cmdlets from the list of cmdlets to the answer area and arrange them in the correct order.

 
Answer:
 
Explanation:
“You need to prepare the Skype for Business Server 2015 environment to provide call group pickup functionality.”
We’re just preparing the environment. We’re not creating the call park yet. After running the three cmdlets above, you can then run the NewCsCallParkOrbit cmdlet.

Case Study 5 – Tailspin toys (QUESTION 28 – QUESTION 32)
Tailspin toys is a toy manufacturer. The company headquarters is located in Melbourne.
The company has a design and development office located in Singapore. The company also has branch offices in Hong Kong, Jakarta, Tokyo, Sydney, and Auckland. Tailspin Toys has implemented Skype for Business Server 2015 and is actively using instant messaging (IM), presence, peer-to peer audio and video, conferencing, remote access, and federation. The company uses Exchange Online. The number of users in each office is shown in the following table:

 

Existing Environment
Networks
You have the following networks:

 

The network latency between each branch site and the central site is more than 25ms. Based on the network latency, you use the RTAudio codec for all public switched telephone network (PSTN) calls from the branch sites.
All Windows desktop client computers run Windows 7, Windows 8.1, or Windows 10 and are domain joined.

Skype for Business
Singapore and Melbourne each have the following Skype for Business Server 2015 components:
– A front-end pool with three front-end servers
– A back-end pool that is configured as a two server SQL AlwaysOn availability group
– A single Edge Server
– A single Reverse Proxy server
– A single Office Web App server

Tailspin Toys currently uses a third-party dial-in conferencing provider. Moving dial-in conferencing from the third-party dial-in conferencing provider to the new Skype for Business solution will add a maximum concurrency of 50 PSTN calls to the Melbourne and Singapore sites, respectively.

 

PBX and Dial plans
The following table shows the call load for the existing IP PBX solution:

 

The following table details the Dial Plan for the Sydney office:

 

User issues
Users report the following issues:
– Users in Hong Kong report issues with media quality when using Skype for Business conferencing features.
– Users who need to use Call Via Work report that this option is not visible in their desktop client.
– Users in the Auckland office report issues regarding call quality. You identify that the issue relates to use of non-qualified devices. You purchase new qualified devices and have delivered the device to the Auckland office.
– After the migration from the existing IP-PBX, users in Sydney report that they cannot make calls to mobile numbers.

User1 is located in the Auckland office. User1 reports persistent call quality issues. You generate the following diagnostic report for User1:

Caller Device and Signal Metrics:

 

Audio Stream (Caller->Callee)

 

Audio Stream (Callee -> Caller)

 

Requirements
Business Requirements
You have the following business requirements:
– You must centralize voice services and reduce the costs associated with long distance and international calls.
– You must implement a single voice solution across the enterprise.
– Any planned changes to the solution must minimize administrative and financial costs.
– Executives must be allowed to use third party tablets and mobile devices.
– Executives must be able to receive inbound calls even under bandwidth constrained situations.

Technical Requirements
You have the following technical requirements. The new Skype for Business solution needs to replace the existing third-party party dial-in conferencing provider.

Network requirements
Prioritize Skype for Business traffic on the network where possible.
Avoid over-subscription on bandwidth constraint network sites.

Unified Messaging requirements
Tailspin toys prefers to use voice mail as part of Exchange Online.

Enterprise Voice requirements
Provide enterprise voice to all users in all locations.
Ensure that the solution is highly available.
PSTN connections must be centralized to Melbourne and Singapore.
You must implement Call Via Work functionality for specific users.

QUESTION 28
You need to implement the Mediation services solution.
What should you do?

A.    Use a collocated Mediation server on the existing Front End Servers in Melbourne and Singapore.
B.    Deploy a new stand-alone Mediation server pool in Melbourne and Singapore.
C.     Deploy a dedicated Mediation server pool at each site.
D.     Deploy a Survivable Branch appliance at each site.

Answer: A

QUESTION 29
Hotspot Question
You need to configure the Enterprise Voice deployment for the Hong Kong site.
How should you configure the Hong Kong network link? To answer, select the appropriate codec and bandwidth in kilobits per second (Kbps) from the list in the answer area.

 

Answer:

 

QUESTION 30
You need to enable all users for voice mail.
Which three configuration steps are required to configure the environment for Exchange Unified Messaging? Each correct answer presents part of the solution.

A.    Run the OcsUMUtil executable on the Skype for Business server.
B.    Run ExchUCUtil.ps1 on the Exchange server.
C.    Run the New-CsHostingProvider Skype for Business Management Shell cmdlet.
D.     Run the New-CsHostedVoicemailPolicy Skype for Business Management Shell cmdlet.
E.     Apply the hosted voice mail policy to all users.

Answer: AB

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May 20th, 2017

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