Tips to Pass 70-333 Exam (11 to 20)

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Q11.  – (Topic 2)

Remote users report that they fail to access their voice mail by using the Call Voice Mail option in the Skype tor Business client. Remote users can access voice mail by using the subscriber access number. Internal users do not report any issues accessing voice mail.

You need to enable voice mail access without manually dialing the subscriber number. Which two sets of ports should you open? Each correct answer presents part of the

solution.

A. TCP 443 and UDP 3478 on the external firewall

B. TCP 5062 and 8057 on the internal firewall. TCP 5062 and 8057 on the external firewall

C. TCP 443 and UDP 3478 on the internal firewall

A. D. UDP 50,000 to 59,999 on the internal firewall

E. UDP 50,000 to 59,999 on the external firewall

Answer: A,D

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: potential network delay points

availability of adequate bandwidth to meet current requirements and anticipated growth

The company plans to continuously analyze the Skype for Business Server 2015 servers 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:

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

Overview of data centers

Detail of the Chicago data center

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:

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:

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

Detail of the Chicago data center

Overview of audio and video codec bandwidths

Q12.  – (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

Answer: D

Explanation:

References: https://technet.microsoft.com/en-gb/library/gg425841.aspx

Q13. – (Topic 1)

You collect the following call statistics for users in Los Angeles:

✑ Peak call concurrency is 25 percent.

✑ Fifty percent of all placed calls are routed to the public switched telephone network (PSTN)

✑ Thirty percent of all placed calls are internal calls to users in the other offices.

✑ Twenty percent of all placed calls are conference calls.

✑ The average bandwidth for peer-to-peer calls is 65 kilobits per second (Kbps).

✑ The average bandwidth used for conference calls is 100 Kbps.

You need to allocate the minimum amount of bandwidth required on the wide area network (WAN) link for the planned implementation of the voice gateway in the Los Angeles office. All calls to the PSTN will be routed through the local voice gateway in the Los Angeles office.

How much bandwidth in megabits per second (Mbps) should you allocate?

A. 7.20 Mbps

B. 3.95 Mbps

C. 10.00 Mbps

D. 2.25 Mbps

Answer: A

Q14.  – (Topic 3)

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

Q15.  – (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

Q16. 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:

Q17.  – (Topic 7)

You support a Skype for Business Server 2015 environment that consists of the following:

A single Skype for Business Server 2015 Standard Edition pool that is located in a main office.

Four branch offices that are connected by a 9 megabits per second (Mbps) dedicated wide

area network (WAN) link, each of which has 300 users. You need to be able to support 75 concurrent calls.

Users in the branch offices report poor quality audio during conferences. You perform the following troubleshooting steps:

Implemented Quality of Service (Qos) and Call Admission Control (CAC). In CAC, defined the main office and each branch office as a site In CAC, associated subnets to the relevant sites. Provisioned policy-based QoS for media traffic.

Poor audio quality persists.

You run the Skype for Business Management Shell Get-CsNetworkSite cmdlet. The relevant portion of the results are shown below:

You need to improve audio quality. What should you do?

A. Create a region route to route network traffic between the CAC sites.

B. Create a bandwidth policy profile with an Audio Session Limit of 40 Kbps. Assign the profile to the centralsite.

C. Create a bandwidth policy profile with an Audio Session Limit of 40 Kbps and an Audio

A. Limit of 3 Mbps.Assign the profile to each branch site.

D. Create a bandwidth policy profile with an Audio Session Limit of 40 Kbps and an Audio Limit of 1 Mbps.Assign the profile to each branch site.

Answer: C

Explanation:

References: https://technet.microsoft.com/en-us/library/gg412785.aspx

Q18. HOTSPOT – (Topic 5)

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:

Q19. DRAG DROP – (Topic 1)

You need to configure the unassigned numbers range to support the planned changes. Which four actions should you perform?

To answer, move the four appropriate actions from the list of actions to the answer area and arrange them in the correct order.

Answer:

Q20.  – (Topic 5)

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

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