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Answer:
The Router
Explanation:
A router is a layer 3 device in the OSI network model. As the name implies, it routes packets logically from source to destination. An interface in a router represents a segment or a configured stand-alone network, with a specific subnet mask.
Routers have routing tables that learns a network route statically or dynamically with protocols. When a packet is to be sent to a device in another network, the router receives the packet and forwards the traffic to the destination (through another interface, if connected directly) or to the next hop router interface alone the path to the destination.
When a networking device in a subnet needs to send a packet to another device in a different subnet, it will: address the outgoing packet to it's configured default gateway.
A router can be defined as a networking device that is designed typically for forwarding outgoing data packets between two or more networks based on a well-defined routing protocol.
Generally, routers are typically configured using a standard routing protocol with an IP address as the default gateway.
A subnet is an abbreviation for subnetwork and it can be defined as a logical subdivision (partitioning) of a larger IP network into two or more smaller IP networks.
In Computer Networking, when a networking device belonging to a particular subnet needs to send a packet to another networking device configured in a different subnet, it will address the outgoing packet to it's configured default gateway, which is mainly referred to as a router.
In conclusion, a router is the default gateway to which a networking device addresses or forwards an outgoing packet.
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