What is the default action that prevents users from launching unknown applications?

The correct answer, which specifies the default action that prevents users from launching unknown applications, is based on the concept of application control and security policy management. The default setting of blocking all unhandled applications is a proactive approach to security. This means that any application not explicitly recognized or permitted by the security policies will be blocked from execution. This is essential for safeguarding endpoints against potential threats that could arise from unknown or untrusted applications.

Blocking all unhandled applications helps create a controlled environment where only vetted applications can run, thereby reducing the risk of malware infections and unauthorized access to sensitive information. By preventing the execution of applications that have not been pre-approved or don’t match defined security criteria, organizations can protect their systems more effectively.

Other options, like allowing all applications or prompting for approval, do not align with a strong security posture. Allowing all applications could expose the system to vulnerabilities, while merely prompting for approval may not adequately address the risk associated with unknown software, especially if users might inadvertently approve dangerous applications.