What is the subnetwork address for a host with the IP address 201.100.5.68/28?（）

At which layer of the OSI model is RSTP used to prevent loops?（）

After the show ip route command has been entered,the follwing routes are displayed.Which route will not be entered into the routing table of a neighboring router?（）

Which device might be installed at a branch office to enable and manage an IPsec site-to-site VPN?（）

Which command displays the CHAP authentication process as it occurs between two routers?（）

A network administrator is trying to add a new router into an established OSPF network.The networks attached to the new router do not appear in the routing tables of the other OSPF routers.Given the information in the partial configuration shown below,what configuration error is causing this problem?（）Router(config)#router ospf 1Router(config-router)#network 10.0.0.0 255.0.0.0 area 0

Which statement describes the rule of split horizon?（）

Which IPsec security protocol should be used when confidentiality is required?（）

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?（）

Which statement is true, as relates to classful or classless routing?（）