A router operates at which of the following layers of the OSI model?

The correct answer is B. Layer 3. Routers operate at Layer 3 (Network Layer) of the OSI model. They make forwarding decisions based on logical IP addresses, not physical MAC addresses. Routers read IP packet headers to determine the destination network and select the best path using a routing table. Layer 2…

Networking concepts

Question

Options

ALayer 2
BLayer 3
CLayer 4
DLayer 5

How the community answered

(39 responses)

B
92% (36)
C
3% (1)
D
5% (2)

Explanation

Routers operate at Layer 3 (Network Layer) of the OSI model. They make forwarding decisions based on logical IP addresses, not physical MAC addresses. Routers read IP packet headers to determine the destination network and select the best path using a routing table. Layer 2 (Data Link) is where switches and bridges operate using MAC addresses. Layer 4 (Transport) handles end-to-end communication (TCP/UDP). Layer 5 (Session) manages session establishment and teardown. Routers are the defining Layer 3 device.

Topics

#OSI model#Layer 3#router#network layer

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