The PCB holds the most recent instruction pointer of a process while it is actively running on the CPU.

On the same 32-bit machine, if the address space for a process is divided into pages of size 4KB and each page table entry is 8 bytes, how large would a linear page table be for each process?

When prog is executed, which of the following outputs is impossible?

In kernel mode the MMU checks the VA’s offset against the base and bounds for that segment.

If the scheduler is running the SJF algorithm, what is the average response time of this workload?

CS 537: Introduction to Operating Systems Fall 2024: Midterm Exam #1   This exam is closed book, but you may use 1 sheet of notes.   No calculators may be used.   You have 1 hour and 30 minutes to complete this exam. Unless stated (or implied) otherwise, you should make the following assumptions: The OS manages a single uniprocessor (single core) All memory is byte addressable Page table and page directory entries require 4 bytes Data is allocated with optimal alignment, starting at the beginning of a page Assume leading zeros can be removed from numbers (e.g., 0x06 == 0x6). Hex numbers are represented with a proceeding “0x” The following might help you with some calculations: 0x100 = 28 = 256 210 = 1024 212 = 4096 210 bytes = 1KB 220 bytes = 1MB   This exam has 60 questions.  Each question has the same number of points.   Good luck!

For a segment that grows positively, If a VA’s offset is within bounds then the PA is the segment’s base + the offset.

A workload of 5  jobs is being scheduled on a single-cpu system with a timeslice of 1 second.  The jobs do not perform any IO, just compute.  The jobs’ arrival times and lengths are shown in the table below.  If the scheduler has a choice the job that arrives earlier is selected.  If there still is a choice the job that comes first alphabetically is selected.

The nurse is caring for a patient with a potassium level = 6.2. Based on knowledge of electrolyte imbalances and the related physiologic effects, the nurses’ greatest concern regarding this result is which of the following?

In this same system, a particular VA has an offset of 8KB and the segment for this VA is one that grows negatively.  What is the negative offset?