Which of the following correctly describe steps in the OSI data encapsulation process?（）

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

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

Which statement describes the rule of split horizon?（）

New switches have been purchased for a network upgrade. The objective for the network design emphasizes efficient, error-free transport instead of fast transport.Which switching mode should be configured on the new switches to provide error-free transport to the network? （）

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 if addresses can be assigned to host devices?（）

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

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? （）

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? （）