Question $3$: Set user $($SetUID$)$ and set group $($SetGID$)$ programs and scripts are a powerful mechanism provided by Unix to support $$controlled invocation$$ to manage access to sensitive resources. However, precisely because of this, it is a potential security hole, and bugs in such programs have led to many compromises on Unix systems. Detail a command you could use to locate all set user or group scripts and programs on a Unix system, and how you might use this information.

Question $4$: Some have argued that Unix$/$Linux systems reuse a small number of security features in many contexts across the system; while Windows systems provide a much larger number of more specifically targeted security features used in the appropriate contexts. This may be seen as a trade$-$off between simplicity verses lack of flexibility in the Unix$/$Linux approach against a better targeted but more complex and harder to correctly configure approach in Windows. Discuss this trade$-$off as it impacts on the security of these respective systems, and the load placed on administrators in managing their security.