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

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

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 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 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?（）

At which layer of the OSI model dose PPP perform?（）

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

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?（）

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

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