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 If all OSPF routers in a single area are configured with the same priority value,what value dose a router use for the ODPF router ID in the absence of a loopback interface?（）
单项选择题 Three access ports have been installed and configured to a small office.What term defines the wireless topology?（）
单项选择题 The network administrator cannot to switch 1 over a telnet session,although the hosts attached to switch 1 can ping the interface Fa0/0 of the router.Given the information in the graphic and assuming that the router and switch2 are configured properly,which of the following commands should be issued on switch 1 to correct this problem?（）