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

Which statement describes the rule of split horizon?（）

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

What is a global command?（）

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?（）

Which of the following host addresses are member of networks that can be routed across the public Internet? （）

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?（）

You are configuring a new Catalyst switch that you want to manage remotely from workstations on other network segments within your enterprise.Which of the following are required to allow remote management of the switch over IP?（）

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?（）