Final answer:
During a white-box penetration test, sudden inability to connect to the target network likely indicates automated shunning. Automated shunning is a security measure triggered by suspicious activity.
The Correct Option is; A. Automated shunning.
Step-by-step explanation:
During a white-box penetration test, Luke finding that he is suddenly unable to connect to the target network likely indicates an automated shunning has occurred. Automated shunning is a security measure where the target network identifies suspicious activity and blocks or restricts access to protect itself from potential threats.
It is often triggered by multiple unsuccessful login attempts or unusual network behavior.
For example, if Luke attempted to access the target network using incorrect login credentials multiple times, the network's security system may have automatically recognized this as a potential threat and initiated automated shunning, which blocks Luke's access.
In such cases, it is important to troubleshoot the issue by closely monitoring network logs, checking if Luke's IP address has been blacklisted, and contacting the network administrator to investigate and resolve the problem.