Scenario Solutions

1. c. Cisco IOS routers will route between directly connected interfaces and, because PC1 cannot ping PC2 on another subnet, the PC1 gateway address must not be configured correctly.

2. d. The first request will fail because of the ARP broadcast. The four subsequent pings will reply successfully. (There are five in total: one for an ARP request and four successful replies.)

3. b. show ip arp displays the correct ARP address table for the devices in Figure 1-21.

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