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300-320 · Question #386

An engineer is designing a QoS architecture for a small organization and must meet these requirements: - Guarantees resources for a new traffic flow prior to sending - Polices traffic when the flow…

The correct answer is D. integrated services. Integrated Services (IntServ) uses RSVP (Resource Reservation Protocol) to reserve bandwidth and resources along an end-to-end path BEFORE a flow begins transmitting. This admission control mechanism guarantees resources to compliant flows and polices (drops or remarks) traffic…

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Question

An engineer is designing a QoS architecture for a small organization and must meet these requirements:

  • Guarantees resources for a new traffic flow prior to sending
  • Polices traffic when the flow does not conform

Which QoS architecture model will accomplish this?

Options

  • Aauto quality of service
  • Bmodular quality of service
  • Cdifferentiated services
  • Dintegrated services

How the community answered

(35 responses)
  • A
    3% (1)
  • B
    6% (2)
  • C
    9% (3)
  • D
    83% (29)

Explanation

Integrated Services (IntServ) uses RSVP (Resource Reservation Protocol) to reserve bandwidth and resources along an end-to-end path BEFORE a flow begins transmitting. This admission control mechanism guarantees resources to compliant flows and polices (drops or remarks) traffic that exceeds its reservation. This exactly matches both requirements: guarantee before sending and police non-conforming traffic. Differentiated Services (DiffServ) marks and queues traffic but does not perform per-flow reservation prior to transmission. Auto QoS is a configuration tool, and Modular QoS (MQC) is a Cisco configuration framework, not an architecture model.

Topics

#IntServ#QoS models#RSVP#admission control

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