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 of the following options lists the steps in PPP session establishment in the correct order?（）

Which of the following contribute to congestion on an Ethernet network?（）

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

Which command is used to display the placement and direction of an IP access control list on a router?（）

What feature of a networks switch allows an administrative to create separate broadcast domains?（）

A Class C network address has been subnetted with a /27 mask.Which of the following addresses is a broadcast address for one of the resulting subnets?（）

What is a global command?（）

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

All WAN links is side the TestKing.com network use PPP with for authentication security. Which command will display the CHAP authentication process as it occurs between two routers in the network?（）