Option C is the best answer because the immediate next step in evaluating suspicious Apache requests is to determine whether the access attempts were successful or unsuccessful . CHFI v11 explicitly includes Apache Web Server Architecture and Logs , Apache Access and Error Logs , and Tools for Analyzing IIS Logs and Apache Logs , as well as the investigation of web-based attacks by examining log evidence.
The most direct way to assess whether /admin.php was actually accessed is to review the HTTP status codes
. For example, a successful response can indicate actual access, while unauthorized, forbidden, or not-found responses suggest the requests were blocked or unsuccessful. This helps the investigator decide whether the event is merely reconnaissance, brute-force browsing, or a true unauthorized access attempt.
The other actions may still be useful later. DNS context , user-agent analysis , and timing analysis can provide supporting evidence, but they do not answer the primary question as directly as the HTTP response result does. Therefore, under CHFI's Apache-log and web-forensics objectives, checking the status codes is the most important next action.