Exam 300-420 topic 1 question 212 discussion

Hard to know The Management Plane Protection (MPP) feature can be used to limit remote management sessions to specific trusted interfaces only. This is very useful when a router connects a trusted network to an untrusted network such as the Internet. MPP applies to all management protocols, such as SSH, HTTPS, and SNMP. This feature is configured using the management-interface command in the control pane. This command can be repeated to enable the same or a different set of protocols on other interfaces. One key restriction of this feature is that it cannot be applied to an out-of-band management interface (also called a dedicated management interface), if the device has one. Example 2-12 shows the usage of this command. https://www.ciscopress.com/articles/article.asp?p=2928193&seqNum=2#:~:text=The%20Management%20Plane%20Protection%20(MPP,SSH%2C%20HTTPS%2C%20and%20SNMP.

--> restrict access to management interfaces

C. out-of-band The engineer should choose an out-of-band management network solution to meet the customer's requirements. Out-of-band management involves using a separate, dedicated network for managing devices, separate from the production network. This approach provides the ability to grant and revoke access privileges, restrict access to management interfaces, and limit the allowed protocols to SSH, NTP, FTP, and SNMP. It also enhances security and control, as management traffic is isolated from the production traffic.

correct ! out band is when no metter if the network will outage I still have manage to device .

restrict access to management interfaces Seems like C to me