During an architecture review, you discover the organization has no out-of-band management network for network devices. Why is an out-of-band management network considered a key element of defensible architecture?
Select an answer to reveal the explanation.
Short Explanation and Infographic
Here's the deal — d is correct because an out-of-band management network allows administrators to access and reconfigure devices during an incident even if the in-band network is down or compromised. B is wrong because cost reduction is not the primary security driver.
Full explanation below image
Full Explanation
D is correct because an out-of-band management network allows administrators to access and reconfigure devices during an incident even if the in-band network is down or compromised. B is wrong because cost reduction is not the primary security driver. C is wrong because out-of-band management does not eliminate the need for encrypted protocols. A is wrong because topology obscurement is a separate concern unrelated to out-of-band management.