2. What is context switching? Suppose there are 3 processes P0, P1, P2. At first, PO is executing then P1 interrupts. P1 will execute for some time. After that, P2 will interrupt. Then P2 will execute for some time. Then P0 will interrupt. Draw the process switching diagram.
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- you are tasked with analyzing an algorithm which schedulea processes in a multiprogramming system. You are working with a computer that has two CPUs, each CPU having two threads (hyperthreading). You are studying a scenario with three processes: P0, P1, & P2., with run times of 5, 10, & 20 msecs, respectively. All 3 programs are 100% CPU bound, don't block, and always run in the CPU it's assigned to. How long will it take for these programs to complete execution. Show three different possible outcomes (and assigned process to processor, 3 different combinations and resulting total time for all three to complete)This question is on Process Synchronization in Operating Systems. You need to read the following scenario and find out which Process Synchronization method it resembles with. There are 3 washrooms for men and one for women. Only one person can enter a restroom at a time. When a person leaves the washroom, another person is allowed to enter the washroom. When they are not using the washroom, they are not doing anything. Men are not allowed to use the female washroom. So on a fine rainy day, 9 men arrived and 3 men were allowed to enter the 3 washrooms at a time. They were not allowed to use the female washroom even though it was vacant. What Process Synchronization method has been used here? A) Producer-Consumer B) Readers-Writers C) Dining PhilosophersYou are told that a given system uses Segmentation. The memory is currently full and holds 3 processes "A", "B" and "C" each of size 512KB as well as the kernel whose size is 1024KB. You can assume there is nothing else that is taking up memory. A Timer Interrupt forces a context switch to occur and the scheduler chooses to load process "B" into the CPU and change its state to running. You are told that the base of the stack which grows upwards for processB is found at the very end of our physical memory. You are also told that the last portion of the Address Space for each process is used for the Stack. After the Context switch which process does the values in the segment register correspond to? C + x What is the Physical Address of the base of the stack for ProcessB? (Just give the value in KB) 1536 What is the offset of the Virtual Address 500KB in KB? (Just give the value) 32 What is the Physical Address that the Virtual Address 500KB maps to in KB? (Just give the value) 1524
- When this option is available, the I/O queue should be prioritised above the process execution queue. In what ways may this be beneficial? Who knows what will take place if there is a disruption in the I/O. It is unclear at this time if this will have an effect on the maximum burst rate of the CPU. I'm not really clear on the point you're trying to make here.Someone once observed that "the difference between roles and groups is that a user can shift into and out of roles, whereas that user has a group identity (or identities) that are fixed throughout the session." Consider a system such as a System V-based UNIX system, in which a process can have exactly one group identity. To change groups, users must execute thenewgrpcommand. Do these groups differ from roles? Why or why not?Read each description of each Process Scheduler on the left and match it with the appropriate name on the right. This scheduler decides which processes in memory get time on the CPU. It is executed very frequently. This scheduler handles "swapping" of processes from main memory to mass storage. For example, it may swap-out processes that are waiting for I/O to complete. This scheduler selects spooled processes to load from the mass storage device into mai memory. It attempts to find a good mix of "I/O bound" and "CPU Bound" processes to maximize resource utilization. [Choose ] [Choose ] ✓ [Choose ] Cool Scheduler Schedulers aren't real; Nothing is real Short-term Scheduler Medium-term Scheduler Spool Scheduler Bound Scheduler Frequency Scheduler Swap Scheduler Long-term Scheduler
- In the case of two processes in the READY state, one of which is CPU-bound and the other of which is I/O-bound, which process should be given a greater priority for executing next (assuming all other factors are equal)? Provide a succinct explanation for your response.Write the pseudocode for two processes in deadlock. Please only write a pseudocode solution. This is an operating systems problem in computer science.: Consider a system that has two processes A and B, each wants to record a scanned document on CD. Process A requests permission to use the scanner and is granted permission. Process B is programmed differently and requests the CD recorder first & is also granted permission. Now A asked for the CD recorder but the request is denied until B releases it. Unfortunately, instead of releasing the CD recorder B asks for the scanner. Answer the following question for given above scenario; Draw the Resource Allocation Graph (RAG) & also determine that there is a deadlock that exists or not. Verify the four sufficient & necessary conditions with reasons. Which one is satisfied or not?
- A process references five pages A, B, C, D and E in the following order, A, C, B, E, A, B, E, A, B, C, D, E. Assume the replacement algorithm is first-in-first-out. Find the number of page transfers during this sequence of references starting with an empty main memory with three page frames. Repeat for four page frames.In this scenario, we have a poorly performing PC, and we suspect it might be a process that is causing issues. In our process of troubleshooting, we want to: 1st, to view a list of all running processes to examine which ones are using the most RAM (Memory). 2nd, to view the list of all non-running processes (e.g. the status is suspended, not responding, or unknown). 3rd, to view all running processes under the user account, System. Not processes with the word, System, in the process name. Lastly (4th), to stop all processes begin with the letter S.Is it feasible for a single process to get stopped mid-execution? Justifications for your replies are required.