单项选择题
A. R 12.18.8.0/24 [120/1] via 12.18.2., 00:00:10, Serial0
B. R 12.18.11.0/24 [120/7] via 12.18.9.1, 00:00:03, Serial1
C. C 12.18.1.0/24 is directly connected, Ethernet0
D. R 12.18.5.0/24 [120/15] via 12.18.2.2, 00:00:10, Serial0
单项选择题 You are a network technician at TestKing, Inc. You are currently troubleshooting a routing issue on the Testking1 router. You issue the show ip route command. The output from the command is displayed in the following exhibit: Which one of the following routes WILL NOT be entered into its neighboring routers routing table?（）
单项选择题 You are a network administrator at TestKing, Inc. and youre getting complaintsthat users on the TestKing2 Ethernet network cant access the TestKing1 site. Totroubleshoot this, you begin by looking at the Testking1 and Testking2 routerconfigurations as shown below: Based on the above output, what is the underlying cause of this problem?（）
多项选择题 After executing the "show host" command, which of the information below would you see?（）