Which device operates at Layer 3 to route traffic between networks?

Prepare for the Navy IT Communications Part 5 Test. Study effectively with multiple-choice questions, detailed explanations, and expert tips. Ace your exam with confidence!

Multiple Choice

Which device operates at Layer 3 to route traffic between networks?

Explanation:
Routing between networks happens at the network layer, where a device chooses paths for packets based on IP addresses. The router is the device that connects multiple networks and uses a routing table and protocols to forward each packet toward its destination, selecting the next hop that leads toward the final network. Switches and bridges operate mainly at Layer 2, handling frames within the same network by using MAC addresses, not making inter-network routing decisions. A hub is a purely physical-layer device that repeats signals to all ports without any filtering or path selection. So the device that routes traffic between networks is the router.

Routing between networks happens at the network layer, where a device chooses paths for packets based on IP addresses. The router is the device that connects multiple networks and uses a routing table and protocols to forward each packet toward its destination, selecting the next hop that leads toward the final network. Switches and bridges operate mainly at Layer 2, handling frames within the same network by using MAC addresses, not making inter-network routing decisions. A hub is a purely physical-layer device that repeats signals to all ports without any filtering or path selection. So the device that routes traffic between networks is the router.

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