What is DSCP marking and how is it used to preserve QoS across a wireless and wired network?
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A
A method of physically labeling Ethernet cables by priority
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B
A per-packet tagging mechanism in the IP header that indicates traffic priority for QoS treatment across network devices
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C
A Wi-Fi-only signaling method that does not translate to wired networks
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D
An encryption method used in WPA2-Enterprise