A frame of 1500 bytes travel through five switches along the path. Each link has a bandwidth of 100 Mbps, a length of 100 m, and a propagation speed of 2 × 10 8 m/sec. Assuming a queuing and processing delay of 5 ms at each switch, what is the approximate end-to-end delay for this packet(frame)? 19 .一个 1500 字节长的帧沿路径经过五台交换机。每条链路具有带宽为 100 Mbps ,长度为 100 米,传播速度为 2 ×10 8 米 / 秒。假设在每台交换机上的排队和处理延迟为 5 毫秒,那么对于该帧的近似端到端延迟是多少?