200-301: Cisco Certified Network AssociateDemo

By Cisco · Question Mode

QuestionQ1235

Network Fundamentals

Which action is performed by the data plane within a network device?

  • A Constructs a routing table based on a routing protocol.
  • B Forwards traffic to the next hop.
  • C Looks up an egress interface in the forwarding information base.
  • D Provides CLI access to the network device.
Explanation

The data plane (forwarding plane) is responsible for forwarding transit packets to the next hop, using ASICs/CEF for high-speed switching. Constructing the routing table is a control-plane function, and providing CLI access is a management-plane function. Although the data plane consults the FIB while forwarding, the FIB itself is built by the control plane, so the defining data-plane action is forwarding traffic to the next hop.

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