单项选择题
A. The OSPF areas are not configured correctly.
B. The wildcard masks for the 10.x .x.x networks are incorrect.
C. The 172.16.x.x networks need to be connected to area 0 using virtual links.
D. The 172.16.x.x networks are discontiguous. OSPF is automatically summarizing them to 172.16.0.0/16 and data is being "black holed."
E. There is not enough information to make a determination.
单项选择题 Refer to the exhibits. Router B should advertise the network co nnected to the E0/0/0 interface to router A and block all other network advertisements. The IP routing table on router A indicates that it is not receiving this prefix from router B. What is the probable cause of the problem?（）
单项选择题 After implementing EIGRP on your network, you issue the show ip eigrp traffic command on router C. The following output is shown: What information can you determine about this network?（）
单项选择题 After implementing EIGRP on your network, you issue the show ip eigrp traffic command on router C. The following output is shown: What can you conclude about this network? （）
