Computer Organization and Architecture Mcqs

Page No. 71

The instructions which are used to load or store multiple operands are called as __________


aBanked instructions

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bLump transfer instructions

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cBlock transfer instructions

✓


dDMA instructions

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___________ symbol is used to signify write back mode.


a#

✖


b ^

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c&

✖


d !

✓


View Answer !

The LEA mnemonic is used to __________


aLoad the effective address of an instruction

✓


b Load the values of operands onto an accumulator

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cDeclare the values as global constants

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dStore the outcome of the operation at a memory location

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The instruction JG loop does ______


a jumps to the memory location loop if the result of the most recent arithmetic op is even

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b jumps to the memory location loop if the result of the most recent arithmetic op is greater than 0

✓


cjumps to the memory location loop if the test condition is satisfied with the value of loop

✖


dnone of the mentioned

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The instruction, ADD R1, R2, R3 is decoded as ___________


aR1<-[R1]+[R2]+[R3]

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bR3<-[R1]+[R2]

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cR3<-[R1]+[R2]+[R3]

✖


dR1<-[R2]+[R3]

✓


View Answer R1<-[R2]+[R3]

The Bit extension of the register is denoted with the help of __________ symbol.


a $

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b`

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cE

✓


d ~

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View Answer E

The IA-32 processor can switch between 16 bit operation and 32 bit operation with the help of instruction prefix bit.


aTrue

✓


bFalse

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ceither true either false

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dnone of the mentioned

✖


View Answer True

The register used to serve as PC is called as ___________


a Indirection register

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b Instruction pointer

✓


c R-32

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dNone of the mentioned

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In IA-32 architecture along with the general flags, the other conditional flags provided are ___________


a IOPL

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b IF

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cTF

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dAll of the mentioned

✓


View Answer All of the mentioned

IOPL stands for ________


a Input/Output Privilege level

✓


b Input Output Process Link

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cInternal Output Process Link

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dInternal Offset Privilege Level

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