单选题What best describes processing delay？（）Athe time required from receipt of the incoming frame， until the frame/packet has been queued for transmissionBthe time taken for a single packet to traverse the physical medium from one end to the otherCthe time taken to place a frame on the physical medium for transportDthe time spent for a packet to reside in the output queue of a router
单选题
What best describes processing delay？（）
A
the time required from receipt of the incoming frame， until the frame/packet has been queued for transmission
B
the time taken for a single packet to traverse the physical medium from one end to the other
C
the time taken to place a frame on the physical medium for transport
D
the time spent for a packet to reside in the output queue of a router
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