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

An employee of ABC company has move to an office on a different floor. Although the administrator is able to telnet to all of the routers,the address of Switch F is needed in order to verify that the employee remains in the same VLAN.Which action could be used by the administrator to find the IP address of Switch F?（）

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 command is used to display the collection of OSPF link states?（）

On which options are standard access list based?（）

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?（）

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

Three access ports have been installed and configured to a small office.What term defines the wireless topology?（）

Which statement describes the rule of split horizon?（）

What is the purpose of the cisco Vlan Trunking protocol?（）