A single-mode optical fiber communication link connects two locations 250 km apart using WDM technology with 50 channels, where each channel…

A single-mode optical fiber communication link connects two locations 250 km apart using WDM technology with 50 channels, where each channel provides a bit rate of 10 Gbps. The refractive index of the fiber is 1.5, and data is transmitted using the Stop-and-Wait protocol. A 1 GB file is divided into suitable data frames, and after successfully receiving each frame, the receiver sends a 54-byte acknowledgment (ACK) back to the sender. Assuming no processing or queuing delay, determine the total time required to completely transfer the 1 GB file, including data transmission time, propagation delay, ACK transmission time, and the Stop-and-Wait waiting time.