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OS Mass-Storage Structures
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OS Mass-Storage Structures
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OS Mass-Storage Structures
The magneto-optic head flies ___________ the disk surface than a magnetic disk head does.
much farther from
much closer to
at the same distance as
none of the mentioned
Author:
rikazzz
Comment
OS Mass-Storage Structures
A performance problem with _________ is the expense of computing and writing parity.
non-parity based RAID levels
parity based RAID levels
all RAID levels
none of the mentioned
Author:
rikazzz
Comment
OS Mass-Storage Structures
In RAID level 4, one block read, accesses __________
only one disk
all disks simultaneously
all disks sequentially
none of the mentioned
Other requests are allowed to be processed by other disks.
Author:
rikazzz
Comment
OS Mass-Storage Structures
The time taken for the desired sector to rotate to the disk head is called ____________
positioning time
random access time
seek time
rotational latency
Author:
rikazzz
Comment
OS Mass-Storage Structures
Defective sectors on disks are often known as __________
good blocks
destroyed blocks
bad blocks
none of the mentioned
Author:
rikazzz
Comment
OS Mass-Storage Structures
The data-in register of I/O port is ____________
Read by host to get input
Read by controller to get input
Written by host to send output
Written by host to start a command
Author:
rikazzz
Comment
OS Mass-Storage Structures
The scheme used in the above question is known as _______ or ________
sector sparing & forwarding
forwarding & sector utilization
backwarding & forwarding
sector utilization & backwarding
Author:
rikazzz
Comment
Important Abbreviations
WORM stands for:
write only, read mandatory
write once, read many times
write only once, read multiple
none of the mentioned
Author:
rikazzz
Comment
OS Mass-Storage Structures
Virtual memory uses disk space as an extension of _________
secondary storage
main memory
tertiary storage
none of the mentioned
Author:
rikazzz
Comment
OS Mass-Storage Structures
A process is moved to wait queue when I/O request is made with ____________
non-blocking I/O
blocking I/O
asynchronous I/O
synchronous I/O
Author:
rikazzz
Comment
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