5 \begin{document}

     5 \begin{document}

     6 

     6 

     7 \section*{Homework 4}

     7 \section*{Homework 4}

     8 

     8 

     9 \begin{enumerate}

     9 \begin{enumerate}

    11 

    11 

    12 \item In which of the following situations can the access control mechanism of Unix

    12 \item In which of the following situations can the access control mechanism of Unix

    13 file permissions be used?

    13 file permissions be used?

    14 

    14 

    15 \begin{itemize}

    15 \begin{itemize}