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Exam 8: Virtual Memory

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Question 1

Multiple Choice

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A _________ is issued if a desired page is not in main memory.

A) paging error
B) page replacement policy
C) page fault
D) page placement policy

E) All of the above
F) C) and D)

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Question 2

Multiple Choice

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The __________ structure indexes page table entries by frame number rather than by virtual page number.

A) hash table
B) segment table
C) page table
D) inverted page table

E) None of the above
F) All of the above

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Question 3

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Most of the memory management issues confronting the operating system designer are in the area of paging when segmentation is combined with paging.

The design issue of page size is related to the size of physical main memory and program size.

In SVR4 and Solaris systems, the memory management scheme that manages memory allocation for the kernel is called the _________ .

Linux makes use of a three-level page table structure consisting of the following types of tables: page directory, page table, and __________ .

_________ allows the programmer to view memory as consisting of multiple address spaces.

The principle of locality states that program and data references within a process do not tend to cluster.

The _________ algorithm requires a use bit to be associated with each page in memory.

With __________ , a page is brought into main memory only when a reference is made to a location on that page.

Because a process executes only in main memory, that memory is referred to as ____________ .

The portion of a process that is actually in main memory at any time is defined to be the _________ of the process.

The address assigned to a location in virtual memory to allow that location to be accessed as though it were part of main memory is the __________ .

_________ is a storage allocation scheme in which secondary memory can be addressed as though it were part of main memory.

A precleaning policy writes modified pages before their page frames are needed so that pages can be written out in batches.

The __________ policy replaces the page in memory that has not been referenced for the longest time.

__________ is transparent to the programmer and eliminates external fragmentation providing efficient use of main memory.

_________ is the virtual storage assigned to a process.

The _________ policy results in the fewest number of page faults.

The _________ states the process that owns the page.