N10-005 Question #392: Real Exam Question with Answer & Explanation

The correct answer is D: IP address. IP addresses and routers both operate at Layer 3 (the Network layer) of the OSI model. IP addresses are logical addresses used at Layer 3 for routing packets between networks. Routers are Layer 3 devices that use IP addresses to forward packets between different networks. Hubs op

Question

Which of the following reside at a minimum of Layer 3 of the OSI model? (Select TWO).

Options

AHub
BSwitch
CMAC address
DIP address
ERouter

Explanation

IP addresses and routers both operate at Layer 3 (the Network layer) of the OSI model. IP addresses are logical addresses used at Layer 3 for routing packets between networks. Routers are Layer 3 devices that use IP addresses to forward packets between different networks. Hubs operate at Layer 1 (Physical) - they simply repeat electrical signals. Switches operate at Layer 2 (Data Link) by using MAC addresses to forward frames within a network. MAC addresses are Layer 2 hardware addresses used for local network communication within a single network segment.

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