Which of the following attacks, if successful, could give an intruder complete control of a software-defined networking (SDN) architecture?
A. A brute force password attack on the Secure Shell (SSH) port of the controller
B. Sending control messages to open a flow that does not pass a firewall from a compromised host within the network
C. Remote Authentication Dial-In User Service (RADIUS) token replay attack
D. Sniffing the traffic of a compromised host inside the network