A network administrator needs to configure a serial link between the main office and a remote location.The router at the remote office is a non-cisco router. How should the network administrator configure the serial interface of the main office router to make the connection?（）

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

How are VTP advertisements delivered to switches across the network?（）

Which name describes an IPV6 host-enable tunneling technique that uses IPV4 UDP,does not require dedicated gateway tunnels,and can pass through existing IPV4 NAT gateways?（）

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

While troubleshooting a network problem,a technician discovers that the current copy of the Cisco IOS is outdated and needs to be updated.Which of the following commands would the technician issue to replace the Cisco router IOS with the newer version?（）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

Which Cisco IOS diagnostics command can disrupt the operation of a router under high-load conditions?（）

Which statement describes the rule of split horizon?（）

Which address is the IPV6 all-RIP-routers muticast group address that is used by RIPng as the destaion address?（）