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An organization uses a network configured with routers handling multiple subnets. While establishing a route for new data packets, which type of address does the router primarily use to determine the next hop?
Service number
Port number
MAC address
IP address
Routers at the network layer generally use IP addresses to make decisions about packet forwarding, routing them to the next hop based on the routing table. MAC addresses are used in Layer 2 for device identification on the same network segment and not for routing decisions, making them incorrect for this context. Port numbers and service numbers are associated with TCP/UDP in the transport layer and layer 4 services respectively, which are not used for routing decisions at the network layer.
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