Chapter 11

Introduction to Quality of Service

THE FOLLOWING CVOICE EXAM OBJECTIVES ARE COVERED IN THIS CHAPTER:

  • Describe the need to implement QoS for voice and video.
    • Describe the causes of voice and video quality issues.
    • Describe how to resolve voice and video quality issues.
    • Describe QoS requirements for voice and video traffic.
  • Describe and configure the DiffServ QoS model.
    • Describe the DiffServ QoS model.
    • Describe marking based on CoS, DSCP, and IP Precedence.
    • Describe trust boundaries.
    • Describe the operations of the QoS classifications and marking mechanisms.
    • Describe Low Latency Queuing.
    • Describe the operations of the QoS WAN link efficiency mechanisms.

As soon as IP networks were designed and implemented with sufficient redundancy ...

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