ITE 221 - Quizzes/Exams ( before midterm tests )
A storage device consists of a read/write mechanism and a(n) ____________________. ** Answ** storage medium
A(n) ____________________ provides the interface between the storage device and system bus. ** Answ** device controller
ITE 221 - Quizzes/Exams ( before midterm tests )
A storage device consists of a read/write mechanism and a(n) ____________________. **
Answ** storage medium
A(n) ____________________ provides the interface between the storage device and system bus.
** Answ** device controller
A CPU with a 1 GHz clock rate needs a new instruction and supporting data every
____________________. ** Answ** nanosecond
___________________ is the time required to perform one complete read or write operation.
** Answ** access time
The term ____________________ describes the data transfer unit for magnetic disk and optical
disc drives. ** Answ** sector
_________________ is the only widely used form of serial access storage. ** Answ**
magnetic tape
Primary storage devices must closely match CPU speed and word size to avoid
____________________. ** Answ** wait states
Each refresh operation in DRAM is called a(n) ____________________. ** Answ** refresh
cycle
____________________ is a read-ahead RAM that uses the same clock pulse as the system bus.
** Answ** SDRAM
,___________________ stores bit values by using two magnetic elements, one with fixed polarity
and the other with polarity that changes when a bit is written. ** Answ** MRAM
___________________ RAM is the most common non-volatile RAM used today. ** Answ**
flash
__________________ is the capability of a substance or magnetic storage medium to accept and
hold a magnetic charge. ** Answ** coercivity
The stored charge held within a bit of magnetic storage must be above the
____________________ for a read operation to be successful. ** Answ** read threshold
For a two-dimensional storage medium like a disk platter, having the length and width of the
area that stores one bit increases storage capacity by a factor of ____________________ **
Answ** 4
Magnetic disk media are flat, circular ____________________ with metallic coatings that are
rotated beneath read/write heads. ** Answ** platters
A(n) ____________________ is one concentric circle of a platter, or the surface area that passes
under a read/write head when its position is fixed. ** Answ** track
In a magnetic disk drive, a(n) ____________________ is mounted on the end of an access arm
for each platter surface. ** Answ** read/write head
Average access time is computed under the assumption that two consecutive accesses are sent to
____________________ locations. ** Answ** random
Over time, file contents tend to become ____________________ in many nonsequential sectors.
** Answ** fragmented
, A disk drive's data ____________________ rate is a summary performance number combining
the physical aspects of data access with the electronic aspects of data transfer to the disk
controller or system. ** Answ** transfer
The ____________________ data transfer rate is the fastest rate the drive can support. **
Answ** maximum
Optical storage devices store bit values as variations in ____________________. ** Answ**
light reflection
Current optical storage devices use a(n) ____________________ storage medium. ** Answ**
disc
In a magneto-optical drive, the laser polarity shift used in reading is known as the
"____________________ effect." ** Answ** Kerr
_________________ are storage locations that hold inputs and outputs for the ALU. **
Answ** Registers
The ____________________ of the CPU keeps track of the next program instruction location by
incrementing a pointer after each fetch. ** Answ** control unit
A(n) ____________________ is a command to the CPU to perform a primitive processing
function on specific data inputs. ** Answ** instruction
The collection of instructions that a CPU can process is called the CPU's
____________________. ** Answ** instruction set
A(n) ____________________ operation is a data transfer from a register into primary storage.
** Answ** store
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