200-301 Question 89

Community Discussion

Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.

• Chose A1

  A. reply to an incoming ICMP echo request This happens in the data plane, because the router or switch is directly handling and forwarding packets. An ICMP echo request (ping) is processed at the packet-forwarding level, so the device responds without involving routing protocols or configuration processes. D. compare the destination IP address to the IP routing table This does not occur in the data plane. The control plane uses the routing table to build the forwarding information base (FIB). The data plane then uses the FIB—not the full routing table—to forward packets efficiently.

• Chose A3

  Both A and D comes under data plane. D : Comparing a destination IP address to an IP routing table falls under the data plane in networking terminology; this is because the data plane is responsible for the actual forwarding of packets based on the information in the routing table, which includes looking up the destination IP address to determine the next hop A: While the control plane would be responsible for determining the routing path for the ICMP echo request, the actual sending and receiving of the echo request and reply happens on the data plane.

• 1

  The correct answer is: A. reply to an incoming ICMP echo request Explanation: The data plane (also known as the forwarding plane) is responsible for the actual movement of data packets across the network. Actions in the data plane include forwarding packets, filtering packets, and responding to certain protocol requests, such as ICMP echo requests (i.e., ping responses). Here’s a breakdown of why the other options are incorrect: B. Making a configuration change from an incoming NETCONF RPC is a control plane activity. The control plane handles management and control tasks like configuration changes.