Ensurepass

Topic 3, Humongous Insurance

 

Humongous Insurance currently employs 7,500 people and is based in the United States.

 

The company has 4,000 users in its main office in Chicago. It also has two branch offices, one in New York with 2,000 users and the other in Los Angeles with 1,500 users. The company has 30 executives located across the offices.

 

The company recently migrated from Lync Server 2010 to Skype for Business Server 2015.

 

The company plans to increase the use of audio and video (A/V) conferencing to reduce travel costs. Employees have been asked to use A/V, telephony, and instant messaging (IM) conferencing solutions whenever possible for communication with clients and users in the branch offices.

 

Humongous Insurance is federated with Trey Research Corporation, which uses a third- party IM solution. Users at both companies need to communicate with each other by using their respective IM client.

 

The company plans to continuously analyze the network to identify:

 

clip_image002potential network delay points

clip_image002[1]availability of adequate bandwidth to meet current requirements and anticipated growth

 

The company plans to continuously analyze the Skype for Business Server 2015 serv
ers for performance metrics.

 

Planned Changes

Humongous is in discussion to acquire the Southbridge Video company. Southbridge Video has 2,000 users in two sites.

 

Employees of Humongous Insurance use a variety of mobile devices, including Windows Phones and iOS phones. All iOS phone users must be notified of events, such as new or missed IM invitations and voice mail messages, even when they are using the corporate wireless network.

 

All public switched telephone network (PSTN) traffic will use the G.711 codec.

 

All voice will use the RTAudio Wideband codec.

 

All peer-to peer (P2P) video sessions will support H.264 and RTVideo codecs.

 

Audio bandwidth between the Los Angeles and New York offices is limited.

 

Challenges

All users report poor audio and video quality. Calls are dropped or suffer from jitter and lag.

These issues exist when users are using the Skype for Business client or Skype for Business Phone Edition.

Humongous Insurance users currently are unable to IM with external clients that use different IM programs.

Currently there is no network oversight for Skype for Business communications.

The company has no plans to increase the bandwidth at any sites.

Humongous Insurance does not have a defined remote user access policy.

 

Existing Environment

The three offices are connected to one another as shown in the following network diagram:

clip_image004

 

Additional information about the existing environment is shown in the Supporting Information section:

 

clip_image002[2]Overview of data centers

clip_image002[3]Detail of the Chicago data center

clip_image002[4]Overview of audio and video codec bandwidths

 

Employees of Humongous Insurance use various operating systems, including Windows 7 Enterprise, and Windows 8. All users are enabled for Enterprise Voice, and many have Skype for Business Phone Edition.

 

The concurrent communication modalities usage of the three offices is shown in the following table:

 

clip_image006

 

Humongous Insurance expects to see the number of video users increase by as much as 10 percent. The company expects to see the number of voice users increase by as much as 15 percent.

 

All users at Humongous Insurance will be Skype for Business enabled.

 

The network team configures Quality of Service (QoS) as follows:

 

clip_image008

 

The Skype for Business Server 2015 media configuration matches the port settings used on the network.

 

The company uses synthetic transactions to perform call and voice tests.

 

Many of the employees of Humongous Insurance work from home and sign in securely to the corporate environment in order to use Skype for Business.

 

Business Requirements

Humongous Insurance would like to review the existing network topology and wants to ensure that network capacity will meet current Skype for Business Server 2015 infrastructure capacity requirements for audio and video usage, as well as meet the anticipated increases.

All existing issues relating to the poor quality of Skype for Business Server 2015 calls and conferencing need to be addressed. Company policy allows for all employees to have the option to use video conferencing. Employees will be limited to VGA video quality. Company executives will not have these limitations.

 

Quality of Service (QoS) ports must be unique for audio and video traffic.

 

The company wants to confirm that the current network bandwidth allocated for the network is sufficient for all current and anticipated growth in Skype for Business Server 2015 traffic and would like to guarantee high-quality Skype for Business Server 2015 calls and video conferencing.

 

Humongous Insurance wants to ensure that the volume of Skype for Business Server 2015 traffic does not exceed 50 percent of WAN bandwidth.

 

The recommended design solution needs to eliminate the possibility of WAN oversubscription by Skype for Business Server 2015 traffic.

 

Humongous Insurance wants to use only dedicated computers to monitor the network and perform synthetic transactions to limit the load on the computers.

 

The proposed Skype for Business Server 2015 solution needs to provide scalability to accommodate the company’s future acquisition of Trey Research.

 

The proposed Skype for Business Server 2015 solution should be readily available for users in all three sites.

 

Technical Requirements

The company wants to allow only authorized employees to connect remotely.

 

All remote users will use a secure method when remotely connecting to the network and the Skype for Business environment.

 

The number of open and listening ports must be kept to a minimum.

 

All maintenance and tests of network policies must be done outside of normal business hours. Bandwidth between sites cannot be increased.

 

The quality of voice and video traffic must be increased.

 

The number of dropped calls must be reduced.

 

The corporate information technology (IT) department must be able to push updates and scan users’ computers when they are connected remotely.

 

All push notifications must be able to be sent mobile clients on all supported cell phone manufactures. Many users do not use Windows mobile phones.

IM users must be able to IM with users who are using other IM programs.

 

The Skype for Business Server 2015 Bandwidth Calculator must be used to analyze Skype for Business traffic.

 

It is recommended to deploy QoS for end-to-end support.

 

Mobile client users are supported only with Lync 2013 Mobile clients.

 

Supporting Information

Overview of data centers

clip_image010

 

Detail of the Chicago data center

clip_image012

 

Overview of audio and video codec bandwidths

clip_image014

 

 

QUESTION 1

You need to recommend a solution to test users’ ability to schedule, join, and conduct an audio/video (A/V) conference. What should you do?

 

A.

Run the Test-CsAVConference Skype for Business Management Shell cmdlet and then analyze the trace call flow in Snooper.

B.

Run the Test-CsMcxConference Skype for Business Management Shell cmdlet and save the results. View the results by using the Skype for Business Server 2015 Logging Tool.

C.

Run the Test-CsUcwaConference Skype for Business Management Shell cmdlet.

D.

Run the Test-CsAudioConferencingProvider Skype for Business Management Shell cmdlet and save the results. View the results by using the Central Logging Service.

 

Answer: A

 

 

QUESTION 2

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 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: BC

 

 

QUESTION 4

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 5

DRAG DROP

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.

 

clip_image016

 

Answer:

clip_image018

 

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