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(CO 10) When processing an Ethernet voice frame, where in the frame does an 802.1p-enabled switch look for the priority marking?
(CO 10) When processing an Ethernet voice frame, where in the frame does an 802.1p-enabled switch look for the priority marking? When processing an IP voice packet, where in the packet does a QoS-enabled router look for the priority marking? Describe, in one paragraph, two circumstances under which prioritizing voice traffic has little effect on its QoS guarantee.