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Microsoft 74-335

Network Readiness and Assessment for Lync

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File Date Q&A Votes Size  
Microsoft.74-335.v2016-03-29.95q.ote 2016-03-29 95 0/0 6.75 Mb

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About Microsoft 74-335 dump

Candidates for this exam are professionals with data networking experience who take part in the planning, design and deployment of the Lync unified communications (UC) solution in the enterprise. Candidates should have strong knowledge of data networking and an industry or vendor qualification and should be able to translate business requirements into technical and networking requirements for a UC solution. Candidates should be familiar with Network Readiness Assessment methodology and related tools, such as the Lync bandwidth calculator.
This exam measures your ability to accomplish the technical tasks listed below.
Implement Lync network readiness assessment methodology

  • Identify methodology phases
    Order the phases, identify entry and exit criteria, Discovery, Modelling, Simulation and Recommendation
  • Define duration and scope of methodology phases
    Customers’ geographical profiles, number of customers’ sites tested, internal customers’ processes and customers’ requirements
  • Identify deliverables
    Bandwidth calculator, final presentation and final report
  • Prepare for traffic simulation
    Assess technical requirements of synthetic transaction tools, determine appropriate timing of simulations and gather potential blockers for simulation

Analyse the network environment

  • Review WAN topology
    MPLS (Multiprotocol Label Switching), virtual private network (VPN), multiple MPLS providers, asymmetric links, point-to-point wireless, internal NAT, TCP versus UDP and signalling versus media traffic
  • Review Wi-Fi infrastructure
    Access point roaming, rogue AP, controller placement and channel overlap
  • Review QoS approaches
    Traffic policing and traffic shaping impact on RTC, DSCP and port based, scavenger class and best effort traffic class and separate/converged networks
  • Analyse media flow scenarios
    Conference, peer-to-peer, PSTN and capture traces
  • Analyse the network for optimal performance
    Max jitter, average jitter, peak consecutive packet loss, average packet loss and one-way network delay
  • Monitor and manage networks
    Utilisation, managing policy enforcement, monitoring tools, evaluating network availability and interpreting SNMP traps

Perform usage modelling

  • Model RTC traffic media flows
    Peer-to peer, conferencing and PSTN
  • Model Lync traffic per location
    Predict service needs and growth, compare how different personas impact network requirements and calibrate usage models based on customer usage and business requirements, including audio conferencing, PSTN and web conferencing
  • Calculate traffic volume by using the Lync bandwidth calculator
    Peer-to-peer, PSTN, conferencing, branch traffic, central site traffic and remote user traffic
  • Analyse how predicted traffic impacts a network
    Adjust business requirements, adjust network components (topology, capacity) and limit traffic volume or modify solution design

Analyse customer data and measurements

  • Analyse policies collected from the discovery phase
    Existing Service Level Agreements (SLAs) on network infrastructure, analysing impact of security policies, including firewalls, VPN tunnels, remote access, Direct Access, NAT and Private VLANs and assess appropriateness of current QoS policies for Lync
  • Analyse historical data network usage
    Average usage, peak usage, average drop and peak packet loss
  • Plan simulation traffic
    Design synthetic transaction endpoint placement/location, design synthetic transaction path and design synthetic transaction volume per path
  • Analyse results from traffic simulation
    Interpret baseline network characteristics and any variations, including analysing simulation results in the context of a network (topology, quality of service)
  • Formulate recommendations
    Recommend network reconfigurations, recommend modifications for QoS approach and explain impact of observed network impairments

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