CCDE: Cisco Certified Design Expert (Practical) — Question 91

What is a description of a control plane action?

Answer options

• A. de-encapsulating and re-encapsulating a packet in a data-link frame
• B. matching the destination MAC address of an Ethernet frame to the MAC address table
• C. matching the destination IP address of an IP packet to the IP routing table
• D. hosts locating routers that reside on attached links using the IPv6 Neighbor Discover Protocol

Correct answer: D

Explanation

The correct answer is D because the control plane is responsible for managing how devices communicate over the network, such as finding routers with the IPv6 Neighbor Discovery Protocol. Options A, B, and C describe actions related to data plane processing and forwarding, which do not involve the control plane's functions.