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

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

Which of the following describe router functions?（）

An administrator would like to configure a switch over a virtual terminal connection from locations outside of the local LAN. Which of the following are required in order for the switch to be configured from a remote location? （）

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

Which characteristics are representative of a link-state routing protocol?（）

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?（）

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

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

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?（）