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

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

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

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

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?（）

The network administrator cannot to switch 1 over a telnet session,although the hosts attached to switch 1 can ping the interface Fa0/0 of the router.Given the information in the graphic and assuming that the router and switch2 are configured properly,which of the following commands should be issued on switch 1 to correct this problem?（）

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?（）

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

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?（）