OS Mass-Storage Structures

useless

less efficient

more efficient

none of the mentioned

3

4

5

all of the mentioned

more expensive than

cheaper than

of the same cost as

none of the mentioned

magnetic disks

electrical disks

assemblies

cylinders

a lot of money

unremovable media

removable media

secondary storage

disk crash

head crash

magnetic damage

all of the mentioned

0

1

2

3

0

1

2

0+1

the disks are operated on sequentially

the disks are operated on selectively

the disks are operated in parallel

all of the mentioned

much slower than

much faster than

comparable to

none of the mentioned