Assume you have a computer with 8 GB of RAM and a program that requires 2 GB of memory to run. If you have three instances of the program running simultaneously, what is the minimum size of the virtual memory required to run all the programs?
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- An complete operation does not need to be in memory before it may be executed, according to the approach ofImagine a world where it is impossible to move computer code from one device to another. Memory paging might become more difficult in this way. And what would happen if there wasn't any way to move programs around on a computer? The paging process in memory can be made more difficult in this way.Dynamic memory vs. static memory: What's the difference?
- With virtual memory, when a program requests memory,the memory management system does which of the following? Select one: A. It grants the request as long as there is enough physical memory to accommodate B. It looks up the address in the page table. If the address is in memory, then it grants the request. C. It looks up the address in the page table. If the address is in memory, it grants the request. If the address is stored to disk, it writes a section of memory to disk and then transfers the requested virtual memory address from disk to main memory. D. It causes a deadlock to occur.Assume a computer system has a main memory of 256 Bytes. The following is a memory byte-access trace history of a program run on this system. For example, as it is shown, the program first accesses memory address 0000 0000, and then it accesses memory address 0000 0001 and so on. Note the memory addresses are represented in binary: 00000000, 00000001, 00000010, 00000011, 00001000, 00010000, 00010001, 00000100, 00000101, 00000110, 00000111, 00001001, 00001010, 00001011, 00001100, 00001000, 00001001, 00001010, 00011100, 00011101.Assume a computer system has a main memory of 256 Bytes. The following is a memory byte-access trace history of a program run on this system. For example, as it is shown, the program first accesses memory address 0000 0000, and then it accesses memory address 0000 0001 and so on. Note the memory addresses are represented in binary:00000000, 00000001, 00000010, 00000011, 00001000, 00010000, 00010001, 00000100, 00000101, 00000110, 00000111, 00001001, 00001010, 00001011, 00001100, 00001000, 00001001, 00001010, 00011100, 00011101. If the Cache of this computer system is re-organized to a 16-Byte direct mapped cache with a block size of 4Bytes, what would be the hit rate after the 20th memory access is finished?
- Consider a computer running a program that requires 250 seconds, where 70 seconds is spent executing FP instructions, 55 seconds for INT operations, 85 seconds for load/save operations, and 40 seconds for branch instructions. By how much is the time for INT operations reduced if the total time is reduced by 20%?Which of the following steps must be completed for a computer program to be constructed and executed? None of the other choices. All of the other choices (except "None of the other choices") A computer program is loaded from storage device into RAM and the CPU "jumps to" (begins executing) the first instruction A computer program is written in a high-level language and saved as a plain-text file. A computer program is combined with (a.k.a. linked) with other previously written and compiled code the program depends on, called libraries A computer program is compiled into machine instructions in binary codeAssume there is no such thing as portable code in computer programs. Is there a way to add layers of complexity to the memory paging procedure?
- Write out the four memory allocation methods you learned about in class and explain each one in detail. Of the four options, which two are most often used in real-world situations?Computer Programs: In this section, we'll go further into each of the four memory allocation techniques we've seen so far in the course and describe how they work. How frequently do each of these four terms really get used in practice?Write a program that reads up to 100 characters typed from the keyboard, and displays them on the screen when the key is pressed. You will need to use a system call to read the keyboard and store the typed characters into a buffer, Then you will need to use a system call to read the characters from the buffer and print them on the screen. Write in C language