How many bytes are in yottabyte?
a) 220 bytes
b) 230 bytes
c) 240 bytes
d) 280 bytes
How many methods are used to access data from secondary storage devices?
a) one
b) two
c) three
d) four
random access method, sequential method
What is the purpose of access arm?
a) support the housing of disk arm
b) spin the disk platter
c) position the read/write head
d) allow user to access diskette
One access arm of hard disk drive is used for……
a) whole drive
b) each read/write head
c) each pair of read write head
d) each disk pack
What is the number of bytes in gigabyte?
a) one thousand
b) one million
c) one billion
d) one trillion
How much data stored in each sector of magnetic disk?
a) 510 bytes
b) 511 bytes
c) 512 bytes
d) 513 bytes
