多项选择题
A. The Popcorn router is not forwarding RIP updates.
B. The Popcorn router did not include network 192.168.12.0 in its routing configuration.
C. The Ethernet1 interface of the Popcorn router is shutdown.
D. The clockrate is not present in the configuration of one of the routers.
E. The Serial interface of the Popcorn router is not operating.
单项选择题 Which one of the following EIGRP commands can check the IP addresses of the adjacent neighbors, as well as verifying the EIGRP retransmit intervals and queue counts?（）
单项选择题 A new router, named TK1, is being installed. You wish to add this router to your existing OSPF network. In doing so, you configure the following: TK1(config)# router ospf 1 TK1(config-router)# network 10.10.10.0 255.255.255.0 area 0 After making this change, you notice that the networks attached to TK1 are not being learned by the other OSPF routers. What could be the cause of this?（）
单项选择题 On your OSPF network, routers TK1 and TK2 belong to the same Ethernet network. However, they are unable to establish an adjacency over this link. While troubleshooting this problem, you issue the "show ip ospf interface Ethernet 0"command on each router. The output from these commands is displayed below: What is the underlying cause of the routers failing to become adjacent?（）