Which connections allow the use of full-duplex Ethernet?（）

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

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

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 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?（）

The following access list was applied outbound on he E0 interface connected to the 192.168.1.8/29 LAN:access-list 123 deny tcp 192.168.1.8 0.0.0.7 eq 20 anyaccess-list 123 deny tcp 192.168.1.9 0.0.0.7 eq 21 anyWhat effect will this access list have?（）

Which Frame Relay feature is responsible for transmitting keepalives to ensure that the PVC does not shut down because of inactivity?（）