Which оf the fоllоwing solid compounds is insoluble in wаter?
Suppоse а lоcаl netwоrk consists of а source computer connected to an edge router that connects to a wide area network which routes packets through one backbone router to the destination edge router to the destination local area network and destination computer. The source computer has 10 packets to send to the destination computer. Packets can be acknowledged (ACKed) in two ways. In option 1, when the source computer sends a packet, the packet is ACKed "hop-by-hop," meaning for each packet sent by source, when the packet arrives at the first edge router correctly, the first edge router must return an ACK. When the first edge router sends the frame to the wide area network backbone router and the packet arrives correctly, the backbone router returns an ACK only to the first edge router, and so on until the destination node ACKs the packet only to the destination edge router. In option 2, the packet is ACKed "end-to-end", meaning the source node can send the stream of 10 packets that flow through the network to the destination computer. After the destination computer has received all 10 packets correctly, the destination computer sends one ACK packet that must flow all the way back to the source computer to acknowledge all 10 frames. Assuming all packets are exactly the same size with the same overhead, which approach has better link efficiency? Answer Format: In this question, select the approach. In the next question, give 2 reasons for your selection.