Which of the following statements regarding routed and routing protocols are true?（）

What is the purpose of typing o/r 0x2142 during a password recover procedure on a 2500 series router?（）

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

TestKing.com has allocated the IP add 199.144.27.0 is its network, to provide flexibility for the LAN design, a subnet mask of 255.255.255.240 has been chosen. Which of the following address can be assigned to LAN on the resulting subnets.（）

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 BRI/T interface will be used for an ISDN Connection what other ISDN device is required to complete this connection? （）

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?（）

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

A technician at TestKing needs to update the network documentation. One of the tasks includes documenting the name of the IOS image file of each router in the network.Which commands could be used to find this information?（）

Which command is required for connectivity in a Frame Relay network if Inverse ARP is not operational? （）