Help with #24 pls.

28 Chapter1 Core Network Concepts and Terminology Ethernet Switch 2 Physical Link Link Data Link A-B Ethernet Switch 1 Ethernet Switch 3 Physical Link Link /Client Host Router Server Host HostRouter Ethernet Frame FIGURE 1-22 Ethernet Switched Single Network Ethernet Frames and Data Links In the figure, this small Ethernet network connects two routers, Router A and Router B. . Router A sends an Ethernet frame to Router B. The router transmits this frame over Physical Link 1 to Ethernet Switch 1. Switch 1 forwards (switches) the frame over Physical Link 2 to Ethernet Switch 2 Switch 2 forwards the frame over Physical Link 3 to Switch 3. This final switch forwards the frame over a fourth physical link. The frame then arrives at Router B. The path that the frame travels through this single network is a data link. In fact, a frame's path from the source device to the destination device through a single network of any type is called its data link A frame's path from the source device to the destination device through a single network of any type is called its data link. Ethernet Physical Links (versus PPP Physical Links) In PPP, there always is a single physical link and a single data link when a frame is transmitted. In Ethernet, there is also a single data link, but there usually are multiple physical links. By definition, there is always a single data link when a source device sends a frame toa destination device through a single network. The number of physical links the frame travels over ranges from one with PPP to many for Ethernet Test Your Understanding 24. a) In Figure 1-22, how many physical links will there be when Router A sends a Packet to Router B? (Answer: 4) b) How many data links will there be? (Answer: 1) c) When Client Host Y sends a packet to Router B, how many physical links will there be? d) Data links? e) When Client Host Y sends a packet to Server Host X, how many physical links will there be? f) Data links