To answer this question, let's go through each option to understand why it is correct or incorrect:
Option A) Resources to become unavailable to legitimate users - This option is incorrect. A race condition in a web server can potentially cause resources to become unavailable to legitimate users, but this is not the only consequence of a race condition.
Option B) Cross Site Tracing - This option is incorrect. Cross Site Tracing is not directly related to race conditions in a web server. It refers to a different vulnerability where an attacker can exploit the TRACE HTTP method.
Option C) Server Instability - This option is correct. A race condition in a web server can cause server instability. A race condition occurs when multiple threads or processes access shared resources simultaneously, leading to unpredictable and inconsistent behavior. In the case of a web server, this can result in crashes, hangs, or other forms of instability.
Option D) Both A and B - This option is incorrect. As mentioned earlier, a race condition can lead to resources becoming unavailable to legitimate users, but it is not directly related to Cross Site Tracing.
The correct answer is C) Server Instability. This option is correct because a race condition in a web server can indeed cause server instability.