Which address facilitates the routing of packets over an IP network?
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The address that facilitates the routing of packets over an IP network is the network address.
The network address is a part of the IP address that specifies the network to which a host belongs. The network address, along with the subnet mask, helps to determine the size of the network and the range of IP addresses that can be used within that network.
When a packet is sent across an IP network, the network address is used by the routers to determine the next hop for the packet. Each router along the way examines the destination IP address and the network address to determine which interface to use to forward the packet to the next router. This process continues until the packet reaches its final destination.
The physical address (also known as the MAC address) is used at the data link layer of the OSI model and is used for communication between devices on the same local network. The transport address (also known as the port number) is used at the transport layer of the OSI model and is used to identify specific applications or services running on a device.
In summary, the network address is the address that facilitates the routing of packets over an IP network by allowing routers to determine the next hop for the packet.