Which of the following describe router functions?（）

Which Frame Relay feature is responsible for transmitting keepalives to ensure that the PVC does not shut down because of inactivity?（）

What should the configuration register value be after successfully completing the password recover procedure and returning the router to normal operation? （）

Identify three valid host addresses in the 192.168.27.0 network with a subnet mask of 255.255.255.240. （）

A router with a serial interface will be used for an ISDN link.What other function group devices are required to complete the connection to the service provider? （）

What is the purpose of pressing the Ctrl+Break keys during the router password recover procedure?（）

A network host is configured as follows: Host IP address: 192.168.16.183 Subnet mask: 255.255.255.224 Default gateway: 192.168.16.190 Which of the following statements describe the network to which this host is attached?（）

Five minutes after issuing the show running-config command, a technician enters the command again and notices that several access list statements have been altered. Because of this, the technician believes that the router is being configured by an unknown person through Telnet. Before changing the router passwords, the technician would like to discover if anyone is connected to the router by Telnet and stop them from making further changes.Which commands will accomplish these options?（）

Which statement describes the rule of split horizon?（）

Given a subnet mask of 255.255.255.224, which of the following addresses can be assigned to network hosts?（）