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A computer system supports 32-bit virtual addresses as well as 32-bit physical addresses. Since the virtual address space is of the same size as the physical address space, the operating system designers decide to get rid of the virtual memory entirely. Which one of the following is true?
- a)Efficient implementation of multi-user support is no longer possible
- b)The processor cache organization can be made more efficient now
- c)Hardware support for memory management is no longer needed
- d)CPU scheduling can be made more efficient now
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
A computer system supports 32-bit virtual addresses as well as 32-bit ...
For supporting virtual memory, special hardware support is needed from Memory Management Unit. Since operating system designers decide to get rid of the virtual memory entirely, hardware support for memory management is no longer needed
Most Upvoted Answer
A computer system supports 32-bit virtual addresses as well as 32-bit ...
Introduction:
The given scenario states that a computer system supports 32-bit virtual addresses and 32-bit physical addresses, and the operating system designers decide to eliminate virtual memory entirely. We need to determine which statement is true based on this scenario.
Explanation:
1. Efficient implementation of multi-user support is no longer possible:
Virtual memory allows the operating system to allocate memory resources to multiple processes, ensuring that each process has its own isolated address space. Without virtual memory, it would be challenging for the operating system to provide memory isolation and protection to multiple processes simultaneously. Therefore, the efficient implementation of multi-user support becomes difficult, making option (a) incorrect.
2. The processor cache organization can be made more efficient now:
Virtual memory allows the operating system to provide a larger address space than the physical memory available. It enables the system to store frequently used data in the processor cache, improving performance. Without virtual memory, the cache organization would be limited to the physical address space, which may not be sufficient to cache frequently accessed data. Hence, option (b) is incorrect.
3. Hardware support for memory management is no longer needed:
Virtual memory requires hardware support for memory management, including translation lookaside buffers (TLBs) and page tables. These hardware components are necessary to translate virtual addresses to physical addresses efficiently. If virtual memory is eliminated, the hardware support for memory management becomes unnecessary. Therefore, option (c) is correct.
4. CPU scheduling can be made more efficient now:
CPU scheduling is a process that determines which process should be allocated the CPU at a given time. Virtual memory allows the operating system to manage memory efficiently, reducing the need for frequent disk I/O operations. Without virtual memory, the operating system would have to perform more disk I/O operations to manage memory, which can hinder CPU scheduling efficiency. Thus, option (d) is incorrect.
Conclusion:
Based on the given scenario, the true statement is that hardware support for memory management is no longer needed (option c).
The given scenario states that a computer system supports 32-bit virtual addresses and 32-bit physical addresses, and the operating system designers decide to eliminate virtual memory entirely. We need to determine which statement is true based on this scenario.
Explanation:
1. Efficient implementation of multi-user support is no longer possible:
Virtual memory allows the operating system to allocate memory resources to multiple processes, ensuring that each process has its own isolated address space. Without virtual memory, it would be challenging for the operating system to provide memory isolation and protection to multiple processes simultaneously. Therefore, the efficient implementation of multi-user support becomes difficult, making option (a) incorrect.
2. The processor cache organization can be made more efficient now:
Virtual memory allows the operating system to provide a larger address space than the physical memory available. It enables the system to store frequently used data in the processor cache, improving performance. Without virtual memory, the cache organization would be limited to the physical address space, which may not be sufficient to cache frequently accessed data. Hence, option (b) is incorrect.
3. Hardware support for memory management is no longer needed:
Virtual memory requires hardware support for memory management, including translation lookaside buffers (TLBs) and page tables. These hardware components are necessary to translate virtual addresses to physical addresses efficiently. If virtual memory is eliminated, the hardware support for memory management becomes unnecessary. Therefore, option (c) is correct.
4. CPU scheduling can be made more efficient now:
CPU scheduling is a process that determines which process should be allocated the CPU at a given time. Virtual memory allows the operating system to manage memory efficiently, reducing the need for frequent disk I/O operations. Without virtual memory, the operating system would have to perform more disk I/O operations to manage memory, which can hinder CPU scheduling efficiency. Thus, option (d) is incorrect.
Conclusion:
Based on the given scenario, the true statement is that hardware support for memory management is no longer needed (option c).
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A computer system supports 32-bit virtual addresses as well as 32-bit physical addresses. Since the virtual address space is of the same size as the physical address space, the operating system designers decide to get rid of the virtual memory entirely. Which one of the following is true?a)Efficient implementation of multi-user support is no longer possibleb)The processor cache organization can be made more efficient nowc)Hardware support for memory management is no longer neededd)CPU scheduling can be made more efficient nowCorrect answer is option 'C'. Can you explain this answer?
Question Description
A computer system supports 32-bit virtual addresses as well as 32-bit physical addresses. Since the virtual address space is of the same size as the physical address space, the operating system designers decide to get rid of the virtual memory entirely. Which one of the following is true?a)Efficient implementation of multi-user support is no longer possibleb)The processor cache organization can be made more efficient nowc)Hardware support for memory management is no longer neededd)CPU scheduling can be made more efficient nowCorrect answer is option 'C'. Can you explain this answer? for Computer Science Engineering (CSE) 2024 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about A computer system supports 32-bit virtual addresses as well as 32-bit physical addresses. Since the virtual address space is of the same size as the physical address space, the operating system designers decide to get rid of the virtual memory entirely. Which one of the following is true?a)Efficient implementation of multi-user support is no longer possibleb)The processor cache organization can be made more efficient nowc)Hardware support for memory management is no longer neededd)CPU scheduling can be made more efficient nowCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A computer system supports 32-bit virtual addresses as well as 32-bit physical addresses. Since the virtual address space is of the same size as the physical address space, the operating system designers decide to get rid of the virtual memory entirely. Which one of the following is true?a)Efficient implementation of multi-user support is no longer possibleb)The processor cache organization can be made more efficient nowc)Hardware support for memory management is no longer neededd)CPU scheduling can be made more efficient nowCorrect answer is option 'C'. Can you explain this answer?.
A computer system supports 32-bit virtual addresses as well as 32-bit physical addresses. Since the virtual address space is of the same size as the physical address space, the operating system designers decide to get rid of the virtual memory entirely. Which one of the following is true?a)Efficient implementation of multi-user support is no longer possibleb)The processor cache organization can be made more efficient nowc)Hardware support for memory management is no longer neededd)CPU scheduling can be made more efficient nowCorrect answer is option 'C'. Can you explain this answer? for Computer Science Engineering (CSE) 2024 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about A computer system supports 32-bit virtual addresses as well as 32-bit physical addresses. Since the virtual address space is of the same size as the physical address space, the operating system designers decide to get rid of the virtual memory entirely. Which one of the following is true?a)Efficient implementation of multi-user support is no longer possibleb)The processor cache organization can be made more efficient nowc)Hardware support for memory management is no longer neededd)CPU scheduling can be made more efficient nowCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A computer system supports 32-bit virtual addresses as well as 32-bit physical addresses. Since the virtual address space is of the same size as the physical address space, the operating system designers decide to get rid of the virtual memory entirely. Which one of the following is true?a)Efficient implementation of multi-user support is no longer possibleb)The processor cache organization can be made more efficient nowc)Hardware support for memory management is no longer neededd)CPU scheduling can be made more efficient nowCorrect answer is option 'C'. Can you explain this answer?.
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