http://wiki.answers.com/Q/Which_option_sHow_is_how_a_router_will_route_packets_to_a_remote_network"
Default gateway
If a client computer does not have a better option for accessing another network, it typically uses a router to handle that access. The router connects the client to the appropriate network by forwarding data packets between the client and the destination network. In cases where a direct connection is not available, the router serves as a gateway, enabling communication over different network segments.
A router
router
the primary reason for using a router is to efficiently direct packets (or data) from one network to another, thereby reducing excessive traffic in the whole network.
ANDing is used by a router, to see if the host which has to be contacted, is on the local network of the router, or a remote network.
A router is a device that routes all traffic to and from your network. A router functions by forwarding packets of data between computer networks.
Use tracert to see where your packets are being dropped.
telnet
router
A router is a networking device that forwards data on a network.
bridge filters router directs