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

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?（）

What is the result of issuing the frame-relay map ip 192.168.1.2 202 broadcast command?（）

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

Three switches are connected to one anther via trunk ports.Assuming the default switch configuration,which switch is elected as the root bridge for the spanning-tree instance of vlan 1?（）

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

While troubleshooting a network problem,a technician discovers that the current copy of the Cisco IOS is outdated and needs to be updated.Which of the following commands would the technician issue to replace the Cisco router IOS with the newer version?（）

Which statement describes the rule of split horizon?（）

Which cisco ios command can help to determine the timing of various debug events,relative to each other,when you are debugging a complicated router issue?（）

Which encapsulation type is a Frame Relay encapsulation type that is supported by Cisco routers?（）