(12pts) True or False. Write True or False. Do not write T or F Dynamic partitio
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Question
(12pts) True or False. Write True or False. Do not write T or F
Dynamic partitioning leads to internal fragmentation.
Paging is visible to the user.
Segmentation and paging can be combined
Paging requires more hardware support than segmentation
Page size is normally twice as big as the frame size.
Segmentation leads to external fragmentation.
Consider a memory system with virtual memory 2G, physical memory 2G and page size of 2K. In this system, 31 bits are used to represent the offset within a page.
Page size of 6K is desired by some systems.
Using 2 level paging generally reduces the overall page table size.
In a system that uses inverted page table, there is only one inverted page table.
In a paging system, for every memory access issued by the process, the OS explicitly checks that the process is allowed to access the corresponding memory.
In UNIX, if a process writes to a page that has `copy-on-write' set to 1 then it causes the process to be terminated.
Explanation / Answer
Dynamic partitioning leads to internal fragmentation. False. Internal fragmentation has fixed partitions which suffers from inefficient memory use.
Paging is visible to the user. False. Paging is not visible to the user as paging is a memory management scheme in which a computer stores and retrieves data from the secondary storage for use in main memory. The operating system retrieves data from secondary storage in same-size blocks called pages in this scheme and the secondary storage is not visible to the user.
Segmentation and paging can be combined. True. This statement is true that segmentation and paging can be combined. The combination of segmentation and paging is known as segmented paging.
Paging requires more hardware support than segmentation.False. This statement isn't true both the hardware size of both paging and segmentation can't be compared.
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