Which of the following BEST explains why a penetration tester cannot scan a server that was previously scanned successfully?

Which of the following BEST explains why a penetration tester cannot scan a server that was previously scanned successfully?
A . The IP address is wrong.
B. The server is unreachable.
C. The IP address is on the blocklist.
D. The IP address is on the allow list.

View Answer

Answer: C

Explanation:

The most likely explanation for why a penetration tester cannot scan a server that was previously scanned successfully is that the IP address is on the blocklist. Blocklists are used to prevent malicious actors from scanning servers, and if the IP address of the server is on the blocklist, the scanning process will be blocked.