What is the benefit of deploying Layer 3 QoS marking across an enterprise network?

What is the benefit of deploying Layer 3 QoS marking across an enterprise network?

  • Layer 3 marking can carry QoS information on switches that are not IP aware.
  • Layer 3 marking can be used to carry non-IP traffic.
  • Layer 3 marking can be carried in the 802.1Q fields.
  • Layer 3 marking can carry the QoS information end-to-end.
    Answers Explanation & Hints:

    Marking traffic at Layer 2 or Layer 3 is very important and will affect how traffic is treated in a network using QoS.
    Layer 2 marking of frames can be performed for non-IP traffic.
    Layer 2 marking of frames is the only QoS option available for switches that are not “IP aware.”
    Layer 3 marking will carry the QoS information end-to-end.

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