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Q1. - (Topic 5)
You need to solve the Enterprise Voice issue experienced by Sydney users. Which normalization rule should you use for mobile numbers?
A. ^0[45]((d8))$
B. ^0([45]d{6})$
C. ^0[45]d({8})$
D. ^0([45]d{8})$
Answer: D
Topic 6, Contoso, LTD 2
Contoso, Ltd. is a Canadian business law firm that currently employs 300 people. The company operates a main office in Vancouver that houses 250 employees and a branch office in Seattle that houses 50 employees. All Contoso users are Skype for Business- enabled. Contoso is launching a hybrid configuration of Office 365 to validate the cloud- based Exchange Online service.
Contoso plans to introduce a remote disaster recovery data center to host remote replicas of key services, including Active Directory Domain Services (AD DS), Skype for Business, Exchange, and files and legal software. The company also plans to acquire a small law firm in Vancouver called Litware, Inc., which has 80 employees. Litware currently uses a 10- megabit per second (Mbps) Internet connection.
Half of Litware employees will use Skype for Business services. All Skype for Business- enabled users in Litware will use Instant Messaging only. Currently, Instant Messaging concurrent usage at Litware is 50 percent during peak hours.
There is a possibility that Contoso will make two more acquisitions during the next three years. Vancouver and Seattle employees have submitted support tickets to report poor quality of outbound Skype for Business calls to external users. A user activity report collected by the help desk department is shown in the User Activity Report section.
There is a concern that in the future, the volume of Skype for Business traffic may reach up to 50 percent of the current bandwidth available in the Vancouver office.
User Activity Report
Existing Environment
The core portion of the infrastructure is located in the Vancouver data center, although the
Seattle data center also has two servers (listed below) to provide redundancy of Active Directory and data services.
The following services and applications comprise Contoso’s infrastructure in Vancouver and Seattle.
Vancouver Data Center:
Seattle Data Center:
An overview of the network infrastructure of Vancouver and Seattle data centers is shown in the exhibit. (Click the Exhibit button.)
All users in the Vancouver and Seattle offices use the Microsoft Windows 8 Enterprise operating system and phones that are enabled for Enterprise voice.
Contoso expects to see a growing number of remote users. They anticipate that up to 20 percent of users in Vancouver might work remotely.
Contoso has defined a team of 35 users who will participate in a pilot deployment of the Office 365 hybrid configuration.
The offices in Vancouver and Seattle are using 5-Mbps Internet connections. Contoso has a site-to-site VPN between the Vancouver office and the Seattle office.
All external outbound calls from the Vancouver and Seattle offices are routed outside through the office in Vancouver.
Business Requirements
Contoso needs to review the existing network topology as well as the Skype for Business Server 2015 infrastructure to ensure that network capacity is sufficient to accommodate the Litware, Inc. Skype for Business users in the future.
Contoso expects to see up to 85 percent of simultaneous instant messaging, 1% of peer- to-peer traffic and 25 percent of public switched telephone network (PSTN) calls over the WAN during business hours.
All existing issues that relate to poor quality of outbound Skype for Business calls need to be addressed as well.
Contoso wants to ensure the following:
Current network bandwidth allocated to the Vancouver office is sufficient to sustain the future volume of Skype for Business traffic and guarantee high quality of Skype for Business calls.
Volume the Skype for Business traffic does not exceed 25 percent of the WAN bandwidth.
Contoso plans to redesign the existing site-to-site VPN solution between the Vancouver and Seattle offices to implement a robust and reliable WAN solution with end-to-end support of Quality of Service (QoS).
The recommended design solution needs to eliminate the possibility of WAN oversubscription by Skype for Business traffic.
The proposed Skype for Business Server 2015 solution needs to be: Scalable to accommodate the company’s future acquisitions. Readily available for Vancouver and Seattle users.
In case of a disaster, a manual switchover of Skype for Business services to the disaster recovery datacenter should be available.
Technical Requirements
All Session Initiation Protocol traffic (SIP) traffic must be encrypted.
All external Skype for Business Server 2015 services must be protected by a firewall. A commercial third-party certificate must be used on the external interface of Skype for
Business Server 2015 Edge servers.
The Role-Based Access Control (RBAC) model will be implemented to delegate basic administrative tasks to the Skype for Business help desk team.
All maintenance of Skype for Business servers must be performed outside of business hours.
The proposed architecture solution must support interoperability between Skype for Business Server 2015 and Exchange 2013.
The Skype for Business Bandwidth Calculator must be used to analyze Skype for Business traffic. The QoS end-to-end support needs to be implemented.
Exhibit
Q2. HOTSPOT - (Topic 5)
You need to configure media bypass for Tailspin Toys.
What should you do? To answer, select the appropriate Media Bypass setting from each list in the answer area.
Answer:
Q3. HOTSPOT - (Topic 2)
You need to create the Unified Messaging (UM) dial plans and access numbers for subscriber access.
How many UM dial plans and access numbers should you create? To answer, select the appropriate number of UM dial plans and access numbers in the answer area.
Answer:
Q4. HOTSPOT - (Topic 4)
You need to deploy the Mediation Server pools, gateways, 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, gateways, and trunks and gateways from the list in the answer area.
Answer:
Q5. - (Topic 7)
You support a customer whose network environment includes Skype for Business Server 2015 servers. All of the company servers are located in the company datacenter. All users have Skype for Business client installed on their local computers.
You deploy a virtual desktop infrastructure (VDI) environment to a pilot group of users. You install the Lync VDI plug-in and plug Skype for Business compatible devices to the users’ computers.
Users report that Skype for Business fails intermittently when pairing with the Lync VDI plug-in.
You need to ensure reliable access to Skype for Business Server 2015 for this pilot group of users.
What should you do?
A. For all VDI users, set the value of the EnableMediaRedirection property to $FALSE.
B. Configure the remote desktop client settings so that audio plays on the local computer and remote recordingis disabled.
C. Run Windows 10 or higher on the local computers.
D. Uninstall Skype for Business from the local users’ computers.
Answer: D
Explanation:
References: https://technet.microsoft.com/en-us/library/jj204713(v=ocs.15).aspx
Q6. DRAG DROP - (Topic 4)
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:
Q7. - (Topic 4)
You need to configure the trunks defined in the Skype for Business topology based on the requirements.
A. Enable media bypass.
B. Enable centralized media processing.
C. Set Encryption Support Level to required.
D. Disable REFER support.
Answer: A,D
Topic 5, Tailspin toys
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 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.
Q8. DRAG DROP - (Topic 6)
You are developing a design solution to eliminate the possibility of wide area network (WAN) over -subscription by Skype for Business traffic.
You need to assign tasks to each office.
Which tasks should you assign to each office? To answer, drag the appropriate task or tasks to the correct office or offices in the answer area. Each task may be used once, more than once, or not at all. You may need to drag the split bar between panels or scroll to view content.
Answer:
Q9. - (Topic 6)
You need to define the goals that you would like to achieve after you perform usage modeling of Skype for Business traffic.
Which two goals should you establish? Each correct answer presents part of the solution.
A. Confirm that bandwidth is sufficient for 40 new Litware, Inc. Skype for Business users.
B. Confirm that the volume of Skype for Business traffic does not exceed 5 megabits per second (Mbps).
C. Confirm that bandwidth is sufficient for 80 new Litware, Inc. Skype for Business users.
D. Confirm that the volume of Skype for Business traffic does not exceed 25 percent of wide area network (WAN) bandwidth.
E. Confirm that bandwidth is sufficient for Microsoft Office 365 Hybrid Skype for Business deployment.
Answer: C,D
Topic 7, Mix Questions set
32. - (Topic 7)
You support Skype for Business Server 2015 servers in your customer’s network. The network includes two branches connected with an 8 megabits per second (Mbps) network circuit. The circuit has 1 Mbps of dedicated bandwidth for Skype for Business voice traffic. The network is required to handle 50 peer-to-peer (P2P) calls at a minimum.
Users report that calls between the branches are being dropped, and voice quality is degraded.
Skype for Business audio codecs:
You need to calculate appropriate bandwidth for the P2P call volume required. What is the minimum dedicated bandwidth that you should allocate?
A. 1.2 Mbps
B. 1.4 Mbps
C. 1.9 Mbps
D. 2.2 Mbps E. 2.3 Mbps
Q10. - (Topic 2)
You need to create a rule to meet the technical requirements for international dialing from the SIP trunk in the New York office.
Which type of rule should you create?
A. called number translation
B. normalization
C. dialing
D. calling number translation
Answer: A