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Q1. - (Topic 7)
Your company has a Skype for Business Server 2015 infrastructure that contains two topology sites named London and Seattle. Each site contains an Enterprise Edition Front End pool and an Edge Server.
The external DNS records are configured as shown in the following table.
All users use the Skype for Business client. Some of the users use the Skype for Business client from their personal computer.
You need to ensure that the users in the London site use the Edge Server in the London site for authentication and the users in the Seattle site use the Edge Server in the Seattle site for authentication. The solution must minimize administrative effort.
What should you do?
A. Create an SRV record named _sipexternal._tls.contoso.com that points to sip2.contoso.com.
B. Create an SRV record named _sip._tls.contoso.com that points to sip2.contoso.com.
C. Create an A record for discover.contoso.com that points to the reverse proxy in the Seattle site.
D. Configure a Group Policy object (GPO) for the London site that configures the Skype for Business client touse an external server name of sip2.contoso.com.
Answer: B
Explanation:
References: https://technet.microsoft.com/en-us/library/gg398758(v=ocs.15).aspx
Q2. - (Topic 7)
You create a topology that includes Enterprise Voice. You configure the system to play a message when unassigned numbers are dialed.
You need to add the voice announcements.
Which two file formats can you use? Each Answer: presents a complete solution.
A. WAVE Audio file (*.WAV).
B. Windows Media Audio File (*.WMA)
C. MPEG-4 Audio File (*.M4A)
D. MPEG-2 Audio File (*.MPA)
E. MP3 Audio File (*.MP3)
Answer: A,B
Explanation: References: https://technet.microsoft.com/en- us/library/gg398649(v=ocs.14).aspx
Q3. - (Topic 4)
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: B
Q4. - (Topic 7)
A company plans to implement Skype for Business Server 2015. Before they start deploying the solution, they want to ensure that the network can handle the media traffic that the solution produces.
You must perform a network traffic simulation on their network.
You need to ensure that the correct network metrics are collected during the network traffic simulation.
Which three network metrics should you collect? Each Answer: presents part of the solution.
A. packet loss
B. one-way network delay
C. average jitter
D. forward error correction overhead
E. number of media streams
Answer: A,B,C
Explanation:
References: http://i.crn.com/custom/UC_Strategies_Report.pdf Page 4
Q5. - (Topic 7)
You have a Skype for Business Server 20l5 environment. All users are enabled for Enterprise Voice. You have a Microsoft Exchange Server 2013 organization that contains one server named FX01.
You plan to implement Unified Messaging (UM). From Skype tor Business Management Shell, you run the following commands:
New-UMDialPlan -Name UMDialPlan -UriType “SipName” -VoipSecurity Secured NumberOfDigitsInExtension 4 ExchUCUtil.ps1
You discover that the Enterprise Voice users fail to receive voice mail.
From Event Viewer, you discover the following error message when Skype for Business Server 2015 attempts to transfer a call to UM: “Attempts to route to servers in an Exchange UM Dialplan failed. No server in the dialplan UMDialPlan accepted the call with id [03b5ba2bf7ec4663bc43e8e49c246634]. Cause: Dialplan is not configured properly.”
You need to ensure that the Enterprise Voice users can receive voice mail.
Which two actions should you perform? Each Answer: presents part of the solution.
A. Change the value of the VoipSecurity of the UMDialPlan from Secured to SipSecured.
B. Change the value of the UriType property of the UMDialPlan from SipName to E.164.
C. Run the following Skype for Business Management Shell command: Set-UmService EXO1 -UmStartupMode TIs -DialPlans "UMDialPlan"
D. Run the following Skype for Business Management Shell command:
Set-UmCallRouterSettings EXO1 -UmStartupMode TIs -DialPlans “UMDialPlan”
E. Run the following Skype for Business Management Shell command:
New-UmAutoAttendant -name LyncAa -UmDialPlan LyncUMDialPlan -Status Enabled
Answer: D,E
Explanation:
References: https://technet.microsoft.com/en-gb/library/jj687983.aspx
Q6. - (Topic 6)
You need to estimate the future volume of Skype for Business traffic in the Vancouver office.
Which two employee totals should you use for the estimate? Each correct answer presents part of the solution.
A. 300 employees at Contoso, Ltd.
B. 80 employees at Litware, Inc.
C. 40 employees at Litware, Inc.
D. 35 hybrid users at Contoso, Ltd.
Answer: A,C
Q7. HOTSPOT - (Topic 1)
You need to ensure that the Miami users can use a five-digit extension when they call the Los Angeles users.
What should you include in the normalization rule? To answer, configure the appropriate match pattern and translation pattern in the dialog box in the answer area.
Answer:
Topic 2, Litware, inc
General Overview:
Litware, Inc. is a marketing company that has 20,000 users.
Physical Locations:
Litware has a main office and a branch office. The main office is located in New York. The branch office is located in Montreal.
The offices connect to each other by using a WAN link. Each office connects directly to the Internet.
Each office has a firewall between the internal network and the perimeter network. Each office has a firewall between the perimeter network and the Internet.
Existing Environment
Active Directory Infrastructure
The network contains an Active Directory Domain Services (AD DS) forest named litware.com. The forest contains a single domain. All domain controllers run Windows Server 2012.
Each office contains two domain controllers. Each office is configured as an Active Directory site.
Skype for Business Server Infrastructure
The network contains a Skype for Business Server 2015 infrastructure. The infrastructure contains 12 servers. The servers are configured as shown in the following table.
Litware uses the following Skype for Business features:
Instant messaging (IM) A/V conferencing
The Skype for Business Server 2015 infrastructure is configured to use federation with users at a partner company, which is named Contoso, Ltd. Contoso has a SIP domain named contoso.com. The users at Contoso use Microsoft Skype for Business Online.
Litware has a Microsoft Exchange Server 2013 organization. You integrate Exchange 2013 with Skype for Business Server 2015.
Planned Changes
Litware plans to implement the following changes: Enable Enterprise Voice for all users.
Add IP phones to the existing VLANs. Add a SIP trunk to each site.
Problem Statements
Litware identifies the following issues:
The current firewall configurations allow all ports and all protocols to the Skype for Business Server 2015 infrastructure.
A change to the Skype for Business hosted provider proxy FQDN recently caused the federation with contoso.com to become unavailable.
Requirements Business Goals
Litware plans to minimize hardware and software purchasing costs.
Technical Requirements
Litware identities the following technical requirements:
The Enterprise Voice solution must ensure that calls to Canada are routed through the SIP trunk in the Montreal office. Litware identifies 39 area codes and a country code of 1 for Canada. You must minimize the number of voice routes that you must create.
The Enterprise Voice solution must ensure that calls to any country besides Canada are routed through the SIP trunk in the New York office. Litware identifies 269 area codes and a country code of 1 for the United States.
If the SIP trunk in the New York office fails, users in the Montreal office must be able to place international calls.
The provider of the New York SIP trunk requires that the 011 prefix be used to make all international calls. Rules exist to ensure that dialed numbers conform to E.164 standards. Application sharing for up to 200 simultaneous remote users and 100 simultaneous internal users in a single conference must be supported. Each application sharing session uses 500 Kbps. Only users on the internal network are presenters of the conferences. You must minimize the amount of bandwidth needed to application sharing.
Users in the New York and Montreal offices must be able to dial a local number to access their voice mail remotely. Subscriber access must be available in French for the Montreal
office users and in English and Spanish for the New York office users. Skype for Business Phone Edition devices must be supported.
Users must be able to access their voice mail only from the Skype for Business client by clicking Call Voice Mail.
You must minimize the number of access numbers and UM dial plans that you create.
Security Requirements
Allow only the required communications through the firewalls for the supported Lync services.
Response Group Requirements
Litware plans to create a response group for support calls to meet the following requirements:
Incoming calls must be routed to any support staff who are online and available.
If the support call is not answered by a support staff member, the call must be forwarded to the group of managers on call that day.
Calls forwarded to the managers must be sent to the manager who has not answered a support call in the longest amount of time.
Q8. - (Topic 7)
You have a Microsoft Exchange Server 2013 organization and a Skype for Business Server 2015 infrastructure.
You need to design a Unified Messaging (UM) solution to meet the following requirements: Support a peak concurrency of 500 calls.
Connect to two Skype for Business Server 2015 pools.
What is the minimum number of mailbox servers that are required?
A. 1
B. 2
C. 3
D. 5
Answer: C
Explanation:
References: http://technet.microsoft.com/en-us/library/aa997637
Q9. - (Topic 3)
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: B,C
Q10. DRAG DROP - (Topic 3)
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:
Topic 4, Trey Research
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:
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.
Two users who recently joined the company in the finance department report that they are not able to use the Aries phone even when tethering the phone to their PC.
Executives 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 have the following requirements:
You must reduce international long distance calling costs, and lower support and administration costs foe 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.
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.
Existing gateways do not support the REFER method. You must use the existing gateways with Skype for Business to provide PSTN connectivity.
Where possible, you must optimize media paths.
All calls placed to Russia from any office must route through the Moscow gateways.
In the event of a failure of both gateways at any office, all international calls from that office must route through the Moscow gateways.
The solution must be resilient to the failure of mediation server pools.
All PSTN calls to Germany must use Berlin gateways in the event of Mediation Server pool failure in Berlin.
The maximum concurrent peer-to-peer connections between Moscow and Berlin will be 196.
Response groups must be managed by dedicated response group administrators.
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 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: