Hyperthreading In Pentium MCQ’s

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This set of Microprocessor Multiple Choice Questions & Answers (MCQs) focuses on “Hyperthreading In Pentium”.

1. The feature of hyperthreading is
a) simultaneous multithreading
b) switching is not required
c) effective use of processor resources
d) all of the mentioned

2. Each logical processor maintains a set of architecture state which consists of
a) general purpose registers
b) machine state register
c) advanced programmed interrupt controller
d) all of the mentioned

3. Which of the following is a resource sharing strategy that had been investigated by the developers?
a) partitioned resources
b) threshold sharing
c) full sharing
d) all of the mentioned

4. A logical processor may be temporarily stalled for
a) including servicing cache misses
b) handling branch mispredictions
c) waiting for results of previous instructions
d) all of the mentioned

5. The instruction that is used when either of the logical processors is idle is
a) HOLD
b) HLDA
c) HALT
d) NONE

6. The HALT instruction is a privileged instruction that can be only used by
a) execution unit
b) operating system
c) control unit
d) memory unit

7. The hyperthreading technology automatically involves the
a) decrease of die area
b) increase of die area
c) decrease of die area to half
d) none

8. The mode that is available when there is only one software thread to execute is
a) single task mode
b) multi task mode
c) single task and multi task mode
d) dual task mode

9. When the operating system uses HALT instruction on a processor which supports multithreading, the operation moves from
a) Single task to multi task mode
b) ST1 to ST0
c) Multi task to single task mode
d) None

10. The Xeon TM processor on which hyperthreading technology was first implemented consists of
a) one logical processor per physical processor
b) two logical processor per physical processor
c) three logical processor per physical processor
d) zero logical processor per physical processor

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