Microprocessor Mock Test 8

10%

Question 1 of 10

1. The unit that performs scheduling of instructions by determining the data dependencies is

none

dispatch-execute unit

fetch-decode unit

retire unit

Question 1 of 10

Question 2 of 10

2. In the execution stage the function performed is

all of the mentioned

CPU accesses data cache

executes floating point operations in execution unit

executes arithmetic/logic computations

Question 2 of 10

Question 3 of 10

3. The architecture in which the hardware decides which instructions are to be issued concurrently at run time is

super pipelined architecture

very long instruction word architecture

multiple instruction issue

superscalar architecture

Question 3 of 10

Question 4 of 10

4. The instruction, F2XMI, is used to compute

2X+1

2X+2

2X-1

Question 4 of 10

Question 5 of 10

5. In a preemptive multitasking O.S., the saving and restoring of FP and MMX states are performed by

O.S.

MMX instructions

MMX registers

Control unit

Question 5 of 10

Question 6 of 10

6. When the instruction, PMULHW, is performed, then the higher order 16-bits of the 32 bit products are stored in

either source or destination

destination operand

no storage of lower order

source operand

Question 6 of 10

Question 7 of 10

7. The stage in which the CPU generates an address for data memory references in this stage is

execution stage

prefetch stage

D1 (first decode) stage

D2 (second decode) stage

Question 7 of 10

Question 8 of 10

8. In Little Endian data format, the data is stored as

LSB is stored at general purpose registers

LSB is stored at lower memory address and MSB at higher memory address

MSB is stored at lower memory address and LSB at higher memory address

MSB is stored at general purpose registers

Question 8 of 10

Question 9 of 10

9. For the MMX instructions, the prefix, P, is used to represent the mode of

virtual mode

programmable mode

real addressing mode

packed mode

Question 9 of 10

Question 10 of 10

10. The mechanism that determines whether a floating point operation will be executed without creating any exception is

Safe Instruction Recognition

Multiple Exception Issue

Safe Exception Recognition

Multiple Instruction Issue

Question 10 of 10