The ______________________ plane includes protocols that allow network engineers to manage the devices.

(A) Management
(B) Data
(C) Control
(D) Network

Management is the correct answer.

Telnet and Secure Shell (SSH) are two of the main management plane protocols. To emphasize the difference with control plane protocols, think about two routers: one configured to allow Telnet and SSH into the router and one that does not. Both could still be running a routing protocol and routing packets, whether or not they support Telnet and SSH.