OS Mass-Storage Structures
In SCSI disks used in high end PCs, the controller maintains a list of _________ on the disk. The disk is initialized during ________ formatting which sets aside spare sectors not visible to the operating system.
destroyed blocks, high level formatting
bad blocks, partitioning
bad blocks, low level formatting
destroyed blocks, partitioning
bad blocks, low level formatting
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RAID level ____ spreads parity and data among all N+1 disks rather than storing data in N disks and parity in 1.A. 3
B. 4
C. 5
D. 6
Using swap space significantly _________ system performance.
A. increases
B. decreases
C. maintains
D. does not affect
The _______ program initializes all aspects of the system, from CPU registers to device controllers and the contents of main memory, and then starts the operating system.
A. main
B. bootloader
C. bootstrap
D. rom
An unrecoverable error is known as _________
A. hard error
B. tough error
C. soft error
D. none of the mentioned
A process is moved to wait queue when I/O request is made with ____________
A. non-blocking I/O
B. blocking I/O
C. asynchronous I/O
D. synchronous I/O
Virtual memory uses disk space as an extension of _________
A. secondary storage
B. main memory
C. tertiary storage
D. none of the mentioned
WORM stands for:
A. write only, read mandatory
B. write once, read many times
C. write only once, read multiple
D. none of the mentioned
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