300-420 Question 269
Select 2A network administrator is designing a management network for a large enterprise. They need to ensure secure and reliable access to network devices for configuration, monitoring, and troubleshooting. The administrator is debating between using in-band or out-of-band management. Which of the following options correctly identifies an advantage of out-of-band management in this scenario?
- A
It provides a dedicated channel for device management, separate from the production network traffic.
- B
It eliminates the need for additional physical interfaces on network devices.
- C
It ensures management access remains available even during a network outage or misconfiguration.
- D
It allows management traffic to be encrypted and authenticated over the same network path as user data traffic.
- E
It reduces the cost of deploying management solutions by leveraging existing network infrastructure.
Show answer and explanation
Correct answers: A, C
Explanation
Out-of-band management offers key advantages such as providing a dedicated and isolated channel for managing devices and ensuring management access during network outages or misconfigurations. While it may require additional infrastructure and cost, its reliability and security benefits outweigh these concerns in many enterprise environments.
- A. Correct.
Out-of-band management uses a dedicated channel for device management, which is isolated from the production network. This ensures that management traffic does not compete with user traffic and reduces the risk of interference.
- B. Incorrect.
Out-of-band management typically requires additional physical interfaces or devices, such as a console server or a separate management network. This contradicts the statement.
- C. Correct.
Out-of-band management provides a reliable path to access devices even during network outages, as it operates independently of the production network.
- D. Incorrect.
This describes an advantage of in-band management, not out-of-band management. In-band management relies on the production network for management traffic and can utilize secure protocols like SSH for encryption and authentication.
- E. Incorrect.
Using out-of-band management often increases costs because it requires dedicated infrastructure like a separate management network or console servers. This contradicts the statement.