200-901 Question 190
Select 3A network engineer is troubleshooting a router and needs to understand how different planes in the device function. Which of the following accurately describe the roles of the management, data, and control planes in the router?
- A
The management plane is responsible for device configuration and monitoring.
- B
The data plane is responsible for forwarding packets based on routing decisions.
- C
The control plane is responsible for enforcing security policies on incoming traffic.
- D
The control plane determines the best path for data by running routing protocols.
- E
The data plane handles the creation of routing tables for packet forwarding.
Show answer and explanation
Correct answers: A, B, D
Explanation
The management, control, and data planes serve distinct roles in a network device. The management plane is used for device configuration and monitoring, the control plane determines the best routing paths using protocols, and the data plane forwards packets based on control plane decisions. Understanding these roles is critical for network troubleshooting and design.
- A. Correct.
Correct: The management plane is used for administrative tasks such as configuration and monitoring of the device.
- B. Correct.
Correct: The data plane is responsible for forwarding packets based on decisions made by the control plane.
- C. Incorrect.
Incorrect: Security policies are typically enforced by access control mechanisms, which are not specific to the control plane.
- D. Correct.
Correct: The control plane runs routing protocols and determines the best path for data to travel through the network.
- E. Incorrect.
Incorrect: Routing tables are created and maintained by the control plane, but they are used by the data plane to forward packets.