Explain difference between user mode and kernel mode, and how to switch from user to kernel

Learning Goal: I’m working on a operating systems test / quiz prep and need an explanation and answer to help me learn.I will send the book and some notes with a brief preview, I need you to be here at 10:50 am to 11:45am EST on Friday so I can send you the questions and you send me the answers during that time the exam topics are here- C code – Manipulate arrays (like integer arrays) – Manipulate strings (character arrays) with string functions, and without functions – Work with argc and argv – Open, read, write, close files – Read input from keyboard- Processes (ch 4 & 5): – Fix broken code that does a fork/exec/wait pattern (perhaps missing some steps) – Explain a zombie is made, and how it is avoided – How to make a process execute two different kinds of code (e.g., some code that computes numbers, other code that interacts with user). – How to run another program (like the shell does) – Answer questions about a process state table like Figure 4.4 in Ch 4 in OSTEP book- Time-sharing, “limited direct execution” (ch 6; stop at page 9): – Explain difference between user mode and kernel mode, and how to switch from user to kernel – Identify which “ring” goes with which mode – Explain purpose of “trap table”, and when it is created and by what (answer: OS) – Explain a figure like 6.2 (ch 6 in OSTEP), ignoring “kernel stack” parts – How process switching works: given a story, explain if it’s a “cooperative” approach or “non-cooperative” approach – Explain how non-cooperative mode works
Requirements: the exam time is 45 minutes

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
$26
The price is based on these factors:
Academic level
Number of pages
Urgency
Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more