Consider the following sushi bar problem. There is a sushi bar with one chef and N seats. When a customer arrives, they take a seat at the bar if there is an empty one or they leave if no seats are empty. After taking a seat, they wait for the sushi chef to be available and then give their order. After the sushi chef serves them they eat and leave. Write a solution to the sushi bar problem that uses semaphores. You should write three procedures: init(), chef(), and customer().

It is vital to research each of the services you plan to disable before implementing any change, especially on critical machines such as the: a. servers in the test environment. b. domain controller and other infrastructure servers. c. desktops that have previously been attacked. d. desktops used by upper-level management.

Which is a false statement considering copyright law? a. when people upload something to the internet they automatically receive a copyright for the work b. the work does not have to contain a copyright notice to be considered having a copyright c. copyright is legal term describing rights given to the creators for literary and artistic works d. personal pictures are always covered by copyrights

Answer the following questions regarding your system by using the commands listed in this chapter. for each question, write the command you used to obtain the answer. a. what are the total number of inodes in the root filesystem? how many are currently utilized? how many are available for use? b. what filesystems are currently mounted on your system? c. what filesystems are available to be mounted on your system? d. what filesystems will be automatically mounted at boot time?