Question: Consider a 1 Mbits/sec connection with a 14 msec one-way propagation delay, i.e., 28 msec roundtrip propagation delay. We want to transfer a file of

 Consider a 1 Mbits/sec connection with a 14 msec one-way propagation

Consider a 1 Mbits/sec connection with a 14 msec one-way propagation delay, i.e., 28 msec roundtrip propagation delay. We want to transfer a file of size 9000 bytes. Each segment has a total size of 625 bytes including the 25-bytes header. When there is data to be transmitted, each segment contains the maximum number of bytes. Assume that ACK segments have a size of 125 bytes and there is a processing delay of 1 msec after a segment is fully received at the receiver until the transmission of the corresponding ACK is started. Assume that the processing delay at the sender after an ACK is received is negligible. We assume that the communication between the sender and receiver is fully duplex, i.e., sender can send data segments while receiving an ACK segment. Selective Repeat protocol is used with a window size of N -8 segments. Assume that every 6th data packet is lost whereas ACK packets are fully reliable. The timeout for each segment is set to 40 msec starting from the end of the transmission of the segment. How much time is required to complete the transfer of the whole file and receive the final ACK at the sender

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