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11. A switched Ethernet local area network contains the following devices A switch with 4 ports, numbered 1-4. Host A (MAC address AA-AA-AA-AA-AA-AA) connected to port 1 Host B (MAC address BB-BB-BB-BB-BB-BB) connected to port 2 Host C (MAC address CC-cc-cc-cC-CC-CC) connected to port 3 A gateway router (MAC address DD-DD-DD-DD-DD-DD) connected to port 4 a. Sketch the LAN. b. Show the forwarding table inside the switch 12. A switch and a NIC are negotiating a connection. The switch operates at 100Mbps and 1000 Mbps. The switch supports both half-duplex and full-duplex connections. The NIC operates at 1000 Mbps and 10000 Mbps. The NIC supports both half-duplex and full- duplex connections. After the negotiation, what speed will the link operate at? a. b. Will it be full-duplex or half-duplex? 13. Your boss wants to upgrade your full-duplex switched Ethernet local area network from 100BaseT to 1000BaseT. Assume the existing NICs in your hosts are full-duplex and operate at 10Mbps and 100Mbps. Will you need to upgrade the NICs to be able to run at 1000 Mbps? a. b. Assume the existing switch is full duplex and operates at 10Mbps, 100Mbps, and 1000Mbps. Will you need to upgrade the switch to be able to run at 1000 Mbps? Assume all of your existing horizontal cabling and patch cables are CAT6. Will you need to upgrade the cabling to be able to run at 1000 Mbps? (Hint: look at Table 3.1 in your text or the notes.) c. Will you need to upgrade your software (other than, possibly, drivers) to be able to run at 1000 Mbps? d. 14. Sketch an Ethernet network showing a gateway router, a switch, and three hosts