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You need to reconfigure Quality of Service (QoS) Differentiated Services Code Point (DSCP) values for media traffic to meet Fabrikam, Inc.\’s requirements.
What should you do?
A. For audio traffic, update the DSCP value to 0. For video traffic, update the DSCP value to 1.
B. For audio traffic, update the Voice8021p value to 40. For video traffic, update the Voice8021p value to 40.
C. For audio traffic, update the DSCP value to 47. For video traffic, update the DSCP value to 33.
D. For audio traffic, update the DSCP value to 46. For video traffic, update the DSCP value to 34.
Correct Answer: D
You need to ensure that wireless users in the main office stay associated with the most powerful wireless access point (WAP) available when they are roaming. What should you do?
A. Configure all WAPs on the same channel.
B. Configure fast roaming.
C. Decrease IP Dynamic Host Configuration Protocol (DHCP) lease timeout on WAPs.
D. Disable lower data rates on WAPs.
Correct Answer: B
You need to recommend a network upgrade based on the results of the Lync traffic simul-ation. Which upgrade should you recommend?
A. Upgrade the backup Internet connection at the Quebec call center.
B. Upgrade the backup Multiprotocol Label Switching (MPLS) link at the Toronto data center.
C. Upgrade the backup Internet connection at the Toronto data center.
D. Upgrade the backup Internet connection at the Montreal call center.
Correct Answer: A
Northwind Traders has a Lync 2013 deployment. The company has outsourced the help desk to a third-party service provider that is located in New Delhi. The service provider has a 10-MB site- to-site virtual private network (VPN) connection to Northwind Traders. The service provider uses a proxy server to route and monitor traffic to Northwind Traders. Both sites\’ computers are on the 10.10.1.x/24 subnet. The proxy server\’s Northwind Traders-facing IP is 192.168.1.100.
New Delhi users can access Northwind Traders\’ Lync environment with [email protected], and they are able to access conferences without issue. However, users complain that they are unable to share their desktops. You need to recommend a solution.
Which two actions should you recommend? (Each correct answer presents a complete solution. Choose two.)
A. Add an Edge server at the New Delhi office.
B. Route Lync traffic externally by using the Edge server.
C. Disable all firewalls between Northwind Traders and New Delhi.
D. Change IP scope and remove the proxy server.
Correct Answer: AB
The Edge Server provides users with the same external characteristics and internal experience that Lync Server 2013..
With the publication of the Edge Server, the following features are supported:
/Connecting remote clients;
/Federation with messenger;
/Integration with Public IM\’s;
Your customer\’s network includes four offices and a data center that are connected by a Multiprotocol Label Switching (MPLS) network.
Your customer has performed a network readiness assessment. The readiness report includes the following sections:
Existing network topology
Historical wide area network (WAN) links
bandwidth utilization Bandwidth estimations
o Video bitrates per client window sizes
o Desktop sharing bitrates
o Bitrates per codec
Users and locations
You are asked to review the readiness report.
You need to identify which sections are missing from the readiness report and should be included.
Which two sections should you include? (Each correct answer presents part of the solution. Choose two.)
C. Traffic simu-lation
Correct Answer: BD
A network assessment can be split into four distinct phases and each phase depends on information collected from the previous phase. The four phases in order are:
Discovery: Understand all aspects of the network infrastructure.
Modeling: Include both `usage modeling\’ and `traffic modeling,\’ where proposed bandwidth usage is models based on existing usage data and using knowledge of the new systems data requirements to estimate usage requirements of the new system.
Traffic simul-ation: Use a traffic simulator to apply application specific traffic to the production network. This phase also includes monitor the network segments to understand what impact the simulated traffic will have on the network.
Recommendations: Analyze data, and produce a report with recommendations. An Introduction to Network Assessment Concepts: Microsoft Unified Communications
You analyze Lytic traffic modeling for a customer\’s network. The network includes a main office, a data center, and five branch offices. Lync servers are consolidated in the data center. The main office and the data center are connected to a Multiprotocol Label Switching (MPLS) network. The branch offices are connected to the main office with virtual private network (VPN) links. The model uses all Lync modalities for all users. The network topology diagram is shown in the exhibit. (Click the Exhibit button.)
The model indicates that the main office exceeds the bandwidth available for Lync over the MPLS link by 10 percent. The utilization of VPN links available for Lync traffic is at almost 100 percent.
You need to recommend a change to optimize Lync traffic through the main office MPLS link.
What should you recommend?
A. Move the Lync pool to the main office.
B. Move the Lync pool to a branch office.
C. Deploy a Survivable Branch Appliance (SBA) at all branches.
D. Deploy a Survivable Branch Appliance (SBA) at the main office.
Correct Answer: A
You need to adjust modalities to define the custom usage model for Litware Inc by using the Lync Bandwidth Calculator.
How should you set the modalities in the Lync Bandwidth Calculator? (To answer, select the appropriate value in each drop-down menu in the Lync Bandwidth Calculator.)
/All Lync-enabled users in Litware will use Instant Messaging only. Currently, Instant Messaging concurrent usage at Litware is 50 percent during peak hours.
The default setting for a custom value is 0%. We
You need to define branch sites in the Lync Bandwidth Calculator to estimate the volume of Lync traffic.
Which branch sites should you select? (To answer, select the appropriate branch site or sites in the Lync Bandwidth Calculator.)
You analyze the results of Lync traffic modeling by using the Lync Bandwidth Calculator. The relevant portion of the network topology is shown in the exhibit. (Click the Exhibit button.)
You need to calculate the volume of audio and video conferencing traffic through the Toronto office Multiprotocol Label Switching (MPLS) link.
Which cell or cells in the Lync Bandwidth Calculator should you select to perform this calculation? (To answer, select the appropriate cell or cells in the Lync Bandwidth Calculator.)
You are evaluating Lync traffic modeling results for your customer.
The customer\’s network topology is shown in the Network Topology exhibit. (Click the Exhibit button.)
Bandwidth utilization results for the sites are shown in the exhibits as follows:
Speed Sensing Mismatch (Full/Auto)
Network adapter speed and duplex mismatch is another issue that can cause packet loss and jitter on a network segment. It can seem counterintuitive that the Auto setting on a network adapter driver or switch port does not work against another interface set to Full. Both interfaces must be set to the same setting in order for packets to flow reliably. In many cases, network performance degradation caused by mismatched settings go unnoticed until real-time media is carried over this link.
Network Planning, Monitoring, and Troubleshooting with Lync Server
Your customer\’s network includes a main office with 500 employees and 10 branch offices with 200 employees each. All branch offices are connected to the main office by wide area network (WAN) links.
You analyze the network readiness for Lync deployment. The customer estimates that at any given time, 20 employees at each branch office will be involved in audio conferences and 150 will be involved in public switched telephone network
(PSTN) conversations over the WAN
You need to modify the relevant modalities of the correct usage model for the branch offices.
How should you modify the relevant modalities? (To answer, select the appropriate value in each drop-down menu in the table showing information from the Lync Persona tab.)
You need to start collecting media quality data generated by Lync during Proof of Concept (POC) testing.
Which three steps should you perform in sequence? (To answer, move the appropriate three actions from the list of actions to the answer area and arrange them in the correct order.)
Select and Place:
Modifies an existing collection of QoE (Quality of Experience) settings.
QoE metrics track the quality of audio and video calls made in your organization, including such things as the number of network packets lost, background noise, and the amount of “jitter” (differences in packet delay). These metrics are stored
in a database apart from other data (such as call detail records), which allows you to enable and disable QoE independent of other data recording. Use this cmdlet to modify settings that configure QoE at the global or site level.
QoE is part of the Monitoring Server role; therefore Monitoring Server must be deployed on your Lync Server installation before QoE recording takes effect or any QoE data can be collected.
Modifies an existing collection of health monitoring configuration settings. These settings enable administrators to run quality assurance tests without having to supply the user names and passwords for the required test accounts.
Modifies an existing collection of call detail recording (CDR) settings. CDR enables you to track usage of such things as peer-to-peer instant messaging sessions, Voice over Internet Protocol (VoIP) phone calls, and conferencing calls. This
usage data includes information about who called whom, when they called, and how long they talked.
You need to analyze the bandwidth impact of different video call flows at the Beijing office.
Which codec will apply to which call flow? (To answer, drag the appropriate codec or codecs to the correct call scenario or scenarios in the answer area. Each codec 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.)
Select and Place:
You need to assess the maximum bandwidth required to replace public switched telephone network (PSTN) connections with a Session Initiation Protocol (SIP) trunking service.
Which bandwidth should you allocate for each region? (To answer, drag the appropriate bandwidth or bandwidths to the correct SIP trunk or trunks in the answer area. Each bandwidth 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.)
Select and Place:
You need to calculate the estimated number of incoming lines required to serve the future needs of the call centers.
How should you adjust the parameters in your calculation? (To answer, drag the appropriate parameter or parameters to the correct adjustment or adjustments in the answer area. Each parameter 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.)
Select and Place: