A system uses proportional allocation (according to process size) when allocatingframes to processes.There are 3 processes with sizes:P1: 20 framesP2: 15 framesP3: 5 frames.The system posses 32 frames, from which 16 frames are reserved for the systemitself and the rest are to be allocated to processes. How many frames process P2will be allocatedSelect one:12O 6O 15O 10

Proportional allocation: Frames are allocated to each process according to the process size. For a…

Answered: A system uses proportional allocation…

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Assuming 4K clustering for a 500-byte file, what is the size (in bytes) of the File Slack? O 12 bytes O 1536 bytes O 3584 bytes O 4096 bytes
Calculate the total page faults using the CLOCK algorithm and a window size = 3 frames Given the following reference string : 1 2 1 3 45 3245 6 4 3 2 Fill in chart. Include the use bit (required for last set of frames only) There is no internal fragmentation. Total page faults CLOCK algorithm The process running has at least The size of a frame is 256 bytes. The program has at least pages in the program. bytes 3 4 5265
An operating system uses a total of two units of the resource R for each of its three user processes. The operating system uses a total of 12 units of R. The absolute minimum number of R units that must be used to guarantee that there are no deadlocks is
Suppose a computer system uses 16-bit addresses for both its virtual and physical addresses. In addition, assume each page (and frame) has size 256 bytes. How many bits are used for the page number? How many bits are used for the offset? 8 bits each. With this system, what’s the maximum number of pages that a process can have? 256 Suppose that each entry in the page table comprises 4 bytes (including the frame number, the valid bit, and miscellaneous “bookkeeping bits”). An OS uses an array to store the page table. What is the size of the page table? 1024 Bytes Furthermore, suppose the first 6 pages of a process map to frames 222 to 227 (as decimal numbers), and the last 5 pages of the process map to frames 1 to 5 (also decimal numbers). All other pages are invalid. Draw the page table, including the valid bit and the frame number. DONE Translate the following virtual addresses to physical addresses, and show how you obtain the answers. (Hint: You do not need to convert…
Consider a computer environment in which there are 4 magnetic drives, 2 printers, 3 scanners, and 1 optical drive. Three processes P1, P2, P3 are using these resources. At any point in time, the allocations and requests for these resources are as follows. Allocations: Magnetic drive Printer Scanner Optical drive P1 1 P2 2 1 P3 1 Requests: Magnetic drive 2 Printer Scanner Optical drive P1 1 P2 1 1 P3 2 1 Is there any way that the processes can complete without deadlock? If yes, explain how. If not, explain why not.
An operating system uses a total of two units of the resource R for each of its three user processes. The operating system uses a total of 12 units of R. The absolute minimum number of R units that must be used to guarantee that there are no deadlocks is
A process will perform consistently when a local frame allocation scheme is utilized. True False
Suppose we're modelling an RC crane which is receiving a sequence of input commands, each of which is UP, DOWN, or BEEP. This crane has only two vertical positions, and starts in the high position. It should go into an ERROR end state if it is asked to go UP when it is in the high position or DOWN when it is in the low position. Once it is in the ERROR state, it stays in the ERROR state no matter what commands it receives. BEEP commands are legal at any point. Give a state diagram for this system, in which each edge corresponds to receiving a single command.
What would happen if a directive were disregarded? In the following circumstances, a software-managed TLB is faster than a hardware-managed TLB:

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