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CPSC 3300 Exam 4 Questions with Correct Answers.
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CPSC 3300 Exam 4 Questions with Correct Answers.
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CPSC 3300 Exam 4 Questions with Correct Answerslocality of reference Correct Answer-Programs access a relatively small
portion of their address space at any instant of time.
spatial locality Correct Answer-If a data location is referenced, data
locations with nearby addresses will tend to be referenced soon.
temporal locality Correct Answer-If a data location is referenced then it
will tend to be referenced again soon.
memory hierarchy Correct Answer-A structure that uses multiple levels
of memories; as the distance from the processor increases, the size of the
memories and the access time both increase.
SRAM Correct Answer-A memory where data is stored statically (as in
flip-flops) rather than dynamically (as in DRAM). SRAMs are faster
than DRAMs, but less dense and more expensive per bit.
DRAM Correct Answer-Memory built as an integrated circuit; it
provides random access to any location.
flash Correct Answer-A nonvolatile semiconductor memory. It is
cheaper and slower than DRAM but more expensive per bit and faster
than magnetic disks. (5-50 microseconds)
, magnetic disk Correct Answer-A form of nonvolatile secondary memory
composed of rotating platters coated with a magnetic recording material.
(5-20 milliseconds)
sector Correct Answer-One of the segments that make up a track on a
magnetic disk; a sector is the smallest amount of information that is read
or written on a disk.
track Correct Answer-One of thousands of concentric circles that make
up the surface of a magnetic disk.
seek Correct Answer-The process of positioning a read/write head over
the proper track on a disk.
rotational delay Correct Answer-The time required for the desired sector
of a disk to rotate under the read/write head; usually assumed to be half
the rotation time.
block (or line) Correct Answer-The minimum unit of information that
can be either present or not present in a cache.
hit rate Correct Answer-The fraction of memory accesses found in a
level of the memory hierarchy.
miss rate Correct Answer-The fraction of memory accesses not found in
a level of the memory hierarchy
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