One of a class of storage devices that can access storage locations in any order is?
One of a class of storage devices that can access storage locations in any order is?
The correct option is E DASD
One of a class of storage
devices that can access storage locations in any order is DASD.
A direct-access storage
device (DASD) is a secondary storage
device in which "each physical record has a discrete location and a unique
address". IBM coined the term DASD as a shorthand describing disks,
magnetic drums, and data cells. Later, optical disc drives and flash memory
units are also classified as DASD. The term DASD contrasts with sequential
storage media such as magnetic tape, and unit record equipment such as card
devices like card readers and punches.
Access methods for DASD include
sequential, indexed, and direct. Direct access contrasts with the sequential
access method used in tape drives. A record on a DASD can be accessed without
having to read through intervening records from the current location, whereas
reading anything other than the "next" record on tape requires
skipping over intervening records, and requires a proportionally long time to
access a distant point in a medium.
One of a class of storage devices that can access storage locations in any order is DASD.
A direct-access storage device (DASD) is a secondary storage device in which "each physical record has a discrete location and a unique address". IBM coined the term DASD as a shorthand describing disks, magnetic drums, and data cells. Later, optical disc drives and flash memory units are also classified as DASD. The term DASD contrasts with sequential storage media such as magnetic tape, and unit record equipment such as card devices like card readers and punches.
Access methods for DASD include sequential, indexed, and direct. Direct access contrasts with the sequential access method used in tape drives. A record on a DASD can be accessed without having to read through intervening records from the current location, whereas reading anything other than the "next" record on tape requires skipping over intervening records, and requires a proportionally long time to access a distant point in a medium.
