1
GATE CSE 2005
MCQ (Single Correct Answer)
+2
-0.6
Consider a disk drive with the following specifications:
$$16$$ surfaces, $$512$$ tracks/surface, $$512$$ sectors/track, $$1$$KB/Sector, rotation speed $$3000$$ rpm. The disk is operated in cycle stealing mode whereby whenever one $$4$$ byte word is ready it it's sent to memory; similarly, for writing, the disk interface reads a $$4$$ byte word from the memory in each $$DMA$$ cycle Memory cycle time is $$40$$nsec. The maximum percentage of time that the $$CPU$$ gets blocked during $$DMA$$ operation is:
A
$$10$$
B
$$25$$
C
$$40$$
D
$$50$$
2
GATE CSE 2002
MCQ (Single Correct Answer)
+2
-0.6
In the index allocation scheme of blocks to a file, the maximum possible size of the file depends on
A
The size of the blocks, and the size of the address of the blocks.
B
The number of blocks used for the index, and the size of the blocks.
C
The size of the blocks, the number of blocks used for the index, and the size of the address of the blocks.
D
None of the above.
3
GATE CSE 1998
MCQ (Single Correct Answer)
+2
-0.6
Formatting of floppy disk refers to
A
Arranging the data on the disk in contiguous fashion
B
Writing the directory
C
Erasing the system area
D
Writing identification information on all tracks and sectors.
4
GATE CSE 1995
Subjective
+2
-0
If the disk in (a) is rotating at $$3600$$ rpm, determine the effective data transfer rate which is defined as the number of bytes transferred per second between disk and memory.
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