200-301: Cisco Certified Network AssociateDemo

By Cisco · Question Mode

QuestionQ429

IP Connectivity

What is the main function of a Layer 3 device?

  • A to transmit wireless traffic between hosts
  • B to analyze traffic and drop unauthorized traffic from the Internet
  • C to forward traffic within the same broadcast domain
  • D to pass traffic between different networks
Explanation

A Layer 3 device, such as a router or multilayer switch operating at the Network layer, uses IP addressing and routing to move packets between different networks or subnets. Forwarding traffic within the same broadcast domain is a Layer 2 switching function, while wireless transmission and traffic filtering are different roles.

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