单项选择题
A.The process id is configured improperly
B.The OSPF area is configured improperly
C.The network wildcard mask is configured improperly
D.The network number is configured improperly
E.The AS is configured improperly
F.The network subnet mask is configuerd improperly
单项选择题 Users on the 172.17.22.0 network cannot reach the server located on the 172.31.5.0 network.The network administrator connected to console port,issued the show ip route command,and was able to ping the server.Based on the output of the show ip route command topology shown in the graphic,what is the cause of the failure?（）
单项选择题 A router has two FastEthernet interfaces and needs to connect to four vlans in the local network.How can you accomplish this task,using the fewest physical interfaces and without decreasing network performance?（）
单项选择题 Refer to the exhibit a network administrator cannot establish a telnet session with the indicated router at is the cause of this failure?（）