1
GATE CSE 2009
MCQ (Single Correct Answer)
+1
-0.3
The essential content(s) in each entry of a page table is / are:
A
Virtual page number.
B
Page frame number.
C
Both virtual page number and page frame number.
D
Access right information.
2
GATE CSE 2009
MCQ (Single Correct Answer)
+1
-0.3
How many $$32K\,\, \times \,\,1RAM$$ chips are needed to provide a memory capacity of $$256$$ $$K$$-bytes?
A
$$8$$
B
$$32$$
C
$$64$$
D
$$128$$
3
GATE CSE 2009
MCQ (Single Correct Answer)
+2
-0.6
Consider the virtual page reference string $$$1,2,3,2,4,1,3,2,4,1$$$
On a demand paged virtual memory system running on a computer system that has main memory size of $$3$$ page frames which are initially empty. Let $$LRU,$$ $$FIFO$$ and $$OPTIMAL$$ denote the number of page faults under the corresponding page replacement policy. Then
A
$$OPTIMAL < LRU < FIFO$$
B
$$OPTIMAL < FIFO < LRU$$
C
$$OPTIMAL = LRU$$
D
$$OPTIMAL = FIFO$$
4
GATE CSE 2009
MCQ (Single Correct Answer)
+2
-0.6
A multilevel page table is preferred in comparison to a single level page table for translating virtual address to physical address because.
A
It reduces the memory access time to read or write a memory location.
B
It helps to reduce the size of page table needed to implement the virtual address space of a process.
C
It is required by the translation look aside buffer.
D
It helps to reduce the number of page faults in page replacement algorithms.
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