Question: 2 . A packet switch receives a packet and determines the outbound link to which the packet should be forwarded. When the packet arrives, one

2. A packet switch receives a packet and determines the outbound link to which the packet
should be forwarded. When the packet arrives, one other packet is halfway done being
transmitted on this outbound link and four other packets are waiting to be transmitted. Packets
are transmitted in order of arrival. Suppose all packets are 1,500 bytes and the link rate is 2
Mbps. What is the queuing delay for the packet? More generally, what is the queuing delay when
all packets have length L, the transmission rate is R, x bits of the currently-being-transmitted
packet have been transmitted, and n packets are already in the queue?

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