Cisco

200-301 · Question #330

What is the primary function of a Layer 3 device?

The correct answer is C. to pass traffic between different networks. https://community.cisco.com/t5/networking-documents/communication-at-network-layer-layer- Router internally has two tables one for layer 2 information (MAC Address / ARP Table) and layer 3 information (Routing Table). Routing table is used for inter-network communication.

Submitted by yuriko_h· Mar 5, 2026IP Connectivity

Question

What is the primary function of a Layer 3 device?

Options

Ato analyze traffic and drop unauthorized traffic from the Internet
Bto transmit wireless traffic between hosts
Cto pass traffic between different networks
Dforward traffic within the same broadcast domain

How the community answered

(55 responses)

A
2% (1)
B
4% (2)
C
93% (51)
D
2% (1)

Explanation

https://community.cisco.com/t5/networking-documents/communication-at-network-layer-layer- Router internally has two tables one for layer 2 information (MAC Address / ARP Table) and layer 3 information (Routing Table). Routing table is used for inter-network communication.

Topics

#Layer 3 networking#Routers#IP routing#Network layer

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