this is one question please answer

Chapter 5 9. Consider an archival system with 13 dedicated devices. All jobs currently runni on this system require a maximum of five drives to complete but they each run for long periods of time with just four drives and request the fifth one only at the very end of the run. Assume that the job stream is endless. a. Suppose your operating system supports a very conservative device allocation policy so that no job will be started unless all the required drives have been allocated to it for the entire duration of its run. 1. What is the maximum number of jobs that can be active at once? Explain your answer. 2. What are the minimum and maximum number of tape drives that may be idle as a result of this policy? Explain your answer. b. Suppose your operating system supports the Banker's Algorithm. 1. What is the maximum number of jobs that can be in progress at once? Explain your answer. 2. What are the minimum and maximum number of drives that may be idle as a result of this policy? Explain your