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    Free Share PDF Microsoft 74-335 Lync Network Readiness Assessment

    By admin | March 30, 2016

    Tagged with:

    Case Study 1 – A Datum Corporation (Question 1 – Questions 15)
    Case Study 2 – Humongous Insurance (Question 16 – Questions 27)
    Case Study 3 – Contoso Ltd (Question 28 – Questions 39)
    Case Study 4 – Fabrikam Inc. (Question 40 – Questions 50)
    Case Study 5 – Lucerne Publishing (Question 51 – Questions 61)
    Background
    Lucerne Publishing is an international publishing company headquartered in Seattle. Lucerne
    specializes in computer technology books and popular science magazines. The company was
    founded in 2001 and has since expanded significantly through multiple acquisitions.
    Lucerne Publishing has four main editorial offices, located in Seattle, Denver, London, and
    Beijing. The company also has more than 50 bookstores and publishing units distributed
    worldwide, with the biggest bookstore and library located in Glasgow.
    Today the company has 2,900 employees worldwide:

    image

    Proof of Concept Deployment
    Lucerne Publishing has a proof of concept (POC) deployment of Lync 2013.
    During the POC testing, users reported the following:
    – In the Seattle office, there were significant delays in the Presence
    status updates.
    – In the Seattle office, the quality of audio calls is often poor
    during business hours.
    – In the London office, users often experience issues with video calls
    during business hours, such as video freezing or video not being
    available during conferences.
    The management team would like to rectify the issues which users have reported before
    proceeding with an implementation.
    Existing Environment
    The existing application environment includes the following components:
    – An Active Directory (AD) domain named lucepub.com with two regional
    subdomains named uk.lucepub.com and ch.lucepub.com.
    – A Microsoft Exchange 2010 organization with MS Exchange 2010 servers

    in Seattle and London.
    The Beijing office has an Office Communications Server (OCS) 2007 R2 deployment, including
    Group Chat.
    Each editorial office has a datacenter to support local infrastructures. The existing network
    infrastructure is configured as shown in the Network Topology Diagram exhibit. (Click the Exhibit
    button.)
    The data centers connect to each other by using a Multiprotocol Label Switching (MPLS) network
    with wide area network (WAN) links that have the following characteristics:

    image

    Peak phone usage in the main offices is as follows:

    image

    Client computers in each office are connected to a switched 100 Mbps Power over Ethernet
    (PoE) port, and servers are connected to 1-Gigabyte per second (Gbps) Ethernet ports.
    Corporate firewalls are installed at all locations, and Quality of Service (QoS) is available globally
    on the network equipment.
    Business Requirements
    Lucerne Publishing has the following requirements to validate the POC Lync Server 2013
    deployment:
    – Evaluate audio call quality and confirm that the public switched
    telephone network (PSTN) long distance calls are not required for
    interoffice communication.
    – Evaluate the new collaboration tools and services (including
    conference calls, audio and video calls, instant messaging (IM), and
    screen sharing) and obtain user feedback.
    – Model the call flow of video conference calls for the Beijing office
    users who will need to continue using OCS 2007 R2 client software
    during the coexistence phase of the deployment.
    – Estimate the effectiveness of replacing the local PSTN connections in

    each office with centralized session initiation protocol (SIP) trunking
    service (one per region: North America, Europe, and Asia).
    – Ensure optimal audio quality of phone calls and conferences between
    all company offices.
    – Support stereo audio for marketing and sales executives for internal
    conference calls to provide a high quality user experience.
    Lucerne Publishing also requires that the following Lync 2013 components and maintenance
    tasks be evaluated:
    – Back-end and network performance reports for business hours are
    generated on a daily basis.
    – Today’s performance reports for the Seattle office and the London
    office are shown in the Performance Reports section.
    – The existing solution for monitoring network utilization between all
    major locations will trigger an alert if utilization becomes high.
    Also, Lucerne Publishing has the following minimum requirements for the Beijing office:
    – Ensure that the office link is not saturated with Lync 2013 traffic,
    and that other network services are not impacted by it.
    – Implement Call Admission Control (CAC) to ensure the quality of the
    connection.
    – Implement QoS to ensure that services other than Lync 2013 are not
    compromised.
    Scalability of the solution is very important to Lucerne Publishing. The company has future
    acquisition plans, and it must be easy to integrate new offices and sites into the existing
    infrastructure to provide enterprise voice, messaging, and email solutions. It should also be easy
    to add additional servers to the existing locations in case those location experience growth and
    add users.
    Finally, the solution must provide high availability (HA) and disaster recovery (DR) capabilities. It
    must provide failover and voice resilience mechanisms in case of single server or entire pool or
    site failure. For branch offices, voice resilience must be increased by using Survivable Branch
    Appliances (SBAs) or Survivable Branch Servers (SBSs).
    Technical Requirements
    Lucerne Publishing will need to be able place a server offline for maintenance without impacting
    Enterprise Voice.
    All Lync traffic should be encrypted, and integrated security of Lync devices should be used when
    possible.
    The solution must support:
    – Microsoft Lync Phone Edition
    – Connections from the Lync app from Windows Store for Windows 8 and
    Windows RT, and from Lync apps on mobile devices
    – Interoperability with devices manufactured by participants in the
    Lync Interoperability program
    – Interoperability with Skype clients
    The existing implementation of WAN/LAN/Wi-Fi and QoS must also be supported.

    QUESTION 1
    Drag and Drop Question
    You need to collect troubleshooting information to analyze the Enterprise Voice functionality
    issues at the Seattle office during the Proof of Concept (POC) testing.
    Which five steps should you perform in sequence?
    (To answer, move the appropriate five actions from the list of actions to the answer area and
    arrange them in the correct order.)

    image

    Answer:

    image

    QUESTION 2
    You need to identify the quality metrics that are responsible for the issues with video calls for
    users in the London office identified during Proof of Concept (POC) testing.
    Which quality metric should you identify?

    A. average packet loss rate
    B. average jitter
    C. maximum round trip
    D. burst gap duration
    Answer: A
    QUESTION 3
    You need to identify the quality metrics that are responsible for the poor quality of audio calls for
    users in the Seattle office.
    Which quality metric should you identify?
    A. average packet loss rate
    B. maximum round trip
    C. burst gap duration
    D. average jitter
    Answer: D
    QUESTION 4
    You prepare to deliver a network assessment for a customer. The customer has four sites as
    described in the following table:

    image

    The results of the traffic simulation for Seattle to Hong Kong are shown in the following table:

    image

    You need to analyze the data and provide the General Comments for the traffic simulation
    results. What should you recommend?
    A. The average delay is beyond acceptable levels. Users might experience poor call quality.
    B. The network performance tests indicate the link is ready for voice.
    C. The packet loss is above 0.5%. Audio quality will be greatly reduced.
    D. The percentage of WAN BW for RTC Traffic is greater than 100%, and users will experience poor calls
    due to limited bandwidth.
    Answer: A
    QUESTION 5
    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 username@northwindtraders.com,
    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.
    Answer: AB
    QUESTION 6
    You perform a network readiness assessment for Lync deployment. The network includes a main
    office and 40 branch offices. The main office and 30 of the branch offices are located in North
    America and use a dedicated 20-megabits per second (Mbps) Multiprotocol Label Switching
    (MPLS) link. The remaining 10 branch offices are located in India and are connected to the main office by a virtual private network (VPN) site-to-site link. Each branch office includes 100 clients and two multipurpose servers. Employees from the branch offices will use the Lync client for peer-to-peer audio communications with employees at the main office. You need to identify the

    number of offices required to test Lync readiness. What is the minimum number of offices you
    should include?
    A. 2
    B. 3
    C. 40
    D. 41
    Answer: B
    QUESTION 7
    Your customer has a main office that houses 450 employees and a call center that houses 120
    employees. The main office and the call center are connected by a 100-megabits per second
    (Mbps) wide area network (WAN) link. The call center uses a Private Branch Exchange (PBX)
    that has 150 incoming lines.
    Your customer plans to deploy a Lync infrastructure for atl employees. You collect network
    information and start building a Lync usage model. You need to identify the deliverables that must
    be achieved after the Lync usage modeling phase is completed.
    Which two deliverables should you achieve? (Each correct answer presents part of the solution.
    Choose two.)
    A. Quality of Service (QoS) configuration
    B. calculation of user-generated Lync traffic
    C. calculation of server-to-server generated Lync traffic
    D. calls simulation over the WAN link
    E. RTC traffic estimation over the WAN link
    Answer: AC
    QUESTION 8
    You perform a network readiness assessment for Lync deployment. The organization’s network
    includes a head office and 400 branch offices. All branch offices are connected to the head office
    with a Multiprotocol Label Switching (MPLS) link. You have completed the traffic simulation. The
    Usage Modeling Data for the Beijing site is shown in the following table:

     image image

    Detailed simulation results are shown in the following exhibits:
    One Way Network Delay {Click the Exhibit button.)

    image

    Average Jitter (Click the Exhibit button.)

    image

    Maximum Jitter (Click the Exhibit button.)

    image

    Average Packet Loss (Click the Exhibit button.)

    image

    Maximum Consecutive Loss (Click the Exhibit button.)

    image

    You need to provide recommendations based on the simulation results. What should you
    recommend?
    A. Implement Call Admission Control (CAC) on Lync for the affected sites.
    B. Restrict video capability or reduce quality codec usage for certain user groups.
    C. Increase WAN link bandwidth.

    D. Monitor Quality of Experience (QoE).
    Answer: C
    QUESTION 9
    Your company corporate telephony environment is a combination of Lync 2013 and traditional
    Private Branch Exchange (PBX). The company has 3,500 users at three sites that use a
    Multiprotocol Label Switching (MPLS) topology. On average, the company has 3 percent of its
    users dialing in for conferences and 7 percent on a public switched telephone network (PSTN)
    call at any time. The company plans to remove the PBXs and have all users use only Lync 2013.
    The company also plans to migrate from an existing content sharing platform. You need to
    generate a persona by using IP-based unified communication (UC) scenarios. Which three pieces
    of information should you collect when you are defining a persona for the existing
    communications? (Each correct answer presents part of the solution. Choose three.)
    A. conference sessions
    B. voice codec used
    C. PSTN-to-PSTN sessions
    D. peer-to-peer (P2P) sessions
    E. content sharing
    Answer: BDE
    QUESTION 10
    You need to determine whether the environment meets technical requirements for Lync apps on
    mobile devices from outside of the perimeter network.
    Which two utilities should you use?
    (Each correct answer presents a complete solution.
    Choose two.)
    A. Remote UC Troubleshooting Tool (RUCT)
    B. Lync Server 2013 Control Panel
    C. Remote Connectivity Analyzer
    D. Lync Connectivity Analyzer
    Answer: BD
    Explanation:
    D: Lync Connectivity Analyzer. This tool will help Lync administrators determine whether the
    deployment and configuration of their on-premises Lync Server environment meets the
    requirements to support connections from Lync Windows Store app and Lync mobile apps.
    Incorrect:
    Not A: RUCT is a free Windows utility for remotely diagnosing Lync Server and OCS issues.
    Specifically it helps to diagnose DNS configuration issues, certificate issues, and other Lync or Communicator client problems.
    Not C: Test connectivity.

     

     

    Angle :

    Updated 74-335 test questions are valid, I have passed my exam. Thanks a lot.

     

     

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