Exam: 200-301: Cisco Certified Network Associate (CCNA) 0 Likes
What is the function of the control plane? (CCNA 200-301)
What is the function of the control plane?
A. It exchanges routing table information.
B. It provides CLI access to the network device.
C. It looks up an egress interface in the forwarding information base.
D. It forwards traffic to the next hop.
Solution
Correct answer: A. It exchanges routing table information.
The control plane is responsible for managing and controlling the network device, including tasks such as:
- Exchanging routing table information with other network devices using routing protocols
- Constructing and maintaining the routing table
- Providing CLI access to the network device (option B)
- Managing network device configuration and policies
The control plane is focused on managing the network device and making decisions about how to forward traffic, whereas the data plane is responsible for actually forwarding traffic (option D). The data plane uses the forwarding information base (FIB) to look up egress interfaces (option C), but this is not a function of the control plane.
Category: Network Fundamentals