* Please answer the following Operating Systems question and its two parts. Part A: Copy on write is an interesting idea used on server systems. Does it make any sense on a smartphone? Why? Part B: Virtual memory provides a mechanism for isolating one process from another. What memory management difficulties would be involved in allowing two operating systems to run concurrently? How might these difficulties be addressed? * Please answers to both parts correctly, and I will provide a Thumbs Up. Thank you.
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- SUBJECT: OPERATING SYSTEM QUESTION NO. 2 For the following short questions, provide a 3-4 line answer. The answer should be based on your analysis and critical thinking i. How multithread threads of a process can be lightweight when they are consuming same processor as required by a whole process? ii. Give two reasons why caches are useful. What problems do they solve? What problems do they cause? If a cache can be made as large as the device for which it is caching (for instance, a cache as large as a disk), why not make it that large and eliminate the device? iii. What is the function of PC? Can a thread share PC as we say “threads share data”? Is there a way to reduce process context switching overhead? iv. Is it possible that we have unlimited buffer size or we are saying it because buffer size is very large? v. Why everything cannot be handled at kernel mode and they need to…Talk about one of the issues that might crop up in an operating system when several processes are all trying to execute at the same time.What are some of the key differences between time-sharing and distributed systems when it comes to computer operating systems? How do they do in contrast to one another when weighed against one another?
- There are 5 sub-questions in this topic, each sub-question has 8 points, totaling 1.What are the main purposes of an operating system? 2. Which states do the process have? Draw a process state diagram. 3. Explain the difference between preemptive and non-preemptive scheduling. 4. Name two differences between logical and physical addresses. 5. Explain the purpose of the open() and close() operationsIn this discussion, we will focus on the role that the operating system plays in the application I/O interface as well as the handling of I/O requests.Why is virtualization the best way to run several operating systems on a single machine?
- Suppose the OS on your computer uses the Buddy system for memory management. Initially the system has a 1 megabyte (1024K) block of memory available. Show the result of each request/release via successive figures similar to the one illustrated in the lecture slides. A: Request 25 K B: Request 500 K C: Request 70 K D:Request 100 K E: Request 40 K Release A F: Request 20 K Release B After memory is allocated to process F, how much internal fragmentation exist in the system.Why is virtualization the greatest option for running several operating systems on a single machine?Multiprogramming, multiprocessing, and remote computing settings need the use of consistent operating system designs. You'll learn about four design and management considerations that arise because of concurrency.?
- There are several causes of resource hogging issues in operating systems. What techniques do you offer for dealing with the problems? One possible explanation for virtual memory is that it is used to assist explain how operations are handled by the more general memory management. explain?Suppose that you are an operating system designer and have been approached by the system administrator to help solve a problem. After investigation, you realise that nonsharable files are allocated to jobs that eventually require other nonsharable and nonpreemptive resources and this is creating a recurring deadlock problem in your installation’s spooling system. Why is the deadlock issue considered a big issue in a computer system? Can you explain to your system administrator why this recurring deadlock cannot be solved by the system itself when it happens? What features might you incorporate into the operating system so that deadlocks in the spooling system can be resolved without losing the work (the system processing) that was underway or already performed by the deadlocked processes? What measures can you take to prevent deadlock in the future?Which of the following best describe the idea of limited direct execution? It is the virtual address space (q.v.) which provided the operating system with the greatest facility to control processes in such a way as to grant and remove access to system resource on demand. A process must be able to use the system resources of CPU, memory and I/O without having complete control over the entire system, effectively overthrowing the operating system - all while providing a mechanism for the OS to regain control from that process and grant the same privilege to another process. An operating system must be able to grant limited time to a process at which point it removes that process from the CPU and grants time to another process. The CPU must be virtualized so that processes cannot execute privileged instructions in a non-privileged context. This is done by pretenting that those instructions do not exist in the user space and only execute NOP's.