Q61.
Which of the following is the appropriate effect of cache memory?
a) Data is read from the main memory and stored in the cache memory. When the CPU
subsequently reads the same data the cache memory can speed up data transfer.
)
b Data is read from the main memory and stored in the cache memory. Instructions are
processed in parallel, to speed up operations.
)
c Instructions are read from the main memory and stored in the cache memory. These
instructions are decoded and executed in the cache memory, to speed up operations.
)
d Instructions are read from the main memory and stored in the cache memory. In parallel to this instruction fetch, data from the main memory is read to the register, to
speed up data transfer.
Q62.
A system has two (2) processing units, each with an availability factor of 0.9. Disregarding
other factors, which of the following is the difference in availability when at least one (1)
of the processing units must operate normally, compared with when both processing units
must operate normally?
a) 0.09
b) 0.10
c) 0.18
d) 0.19
Q63.
Which of the following is the appropriate description of OLED (Organic Light-Emitting
Diode) technology?
a) A display device that uses liquid crystals and ranges in size about from 10 inches to
60 inches. Takes advantage of the property of liquid crystal to change permeability to
light when a voltage is applied.
b) Emits light when voltage is applied. Does not require a backlight, and is characterized by low voltage drive and low power consumption.
c) Automatically displays an animated image when the personal computer is left idle for
a certain length of time, to prevent screen burn-in.
d) Basically uses the same principles as a CRT television, and comes in a variety of sizes such as 15-inch, 17-inch, and 21-inch sizes.
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