Which network plane is used by syslog for delivering messages from the router or switch?

The management plane is any mechanism that helps in the management of a router or switch. Some of the common mechanisms are SSH and Telnet. However, any mechanism that the router uses for management is considered part of the management plane. The control plane refers to any mechanism that controls the data plane. The data plane is responsible for switching and routing data. Any data that is destined for endpoints is switched or routed on the data plane. Switch plane is not a term normally used to describe data types; therefore, option D is an invalid answer.