Computer Organization Questions and Answers – Instructions and Instruction Sequencing

This set of Computer Organization Questions and Answers for Campus interviews focuses on “Instructions and Instruction Sequencing”.

1. RTN stands for ___________
a) Register Transfer Notation
b) Register Transmission Notation
c) Regular Transmission Notation
d) Regular Transfer Notation
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2. The instruction, Add Loc,R1 in RTN is _______
a) AddSetCC Loc+R1
b) R1=Loc+R1
c) Not possible to write in RTN
d) R1<-[Loc]+[R1]
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3. Can you perform an addition on three operands simultaneously in ALN using Add instruction?
a) Yes
b) Not possible using Add, we’ve to use AddSetCC
c) Not permitted
d) None of the mentioned
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4. The instruction, Add R1,R2,R3 in RTN is _______
a) R3=R1+R2+R3
b) R3<-[R1]+[R2]+[R3]
c) R3=[R1]+[R2]
d) R3<-[R1]+[R2]
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5. In a system, which has 32 registers the register id is __________ long.
a) 16 bit
b) 8 bits
c) 5 bits
d) 6 bits
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6. The two phases of executing an instruction are __________
a) Instruction decoding and storage
b) Instruction fetch and instruction execution
c) Instruction execution and storage
d) Instruction fetch and Instruction processing
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7. The Instruction fetch phase ends with _________
a) Placing the data from the address in MAR into MDR
b) Placing the address of the data into MAR
c) Completing the execution of the data and placing its storage address into MAR
d) Decoding the data in MDR and placing it in IR
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8. While using the iterative construct (Branching) in execution _____________ instruction is used to check the condition.
a) TestAndSet
b) Branch
c) TestCondn
d) None of the mentioned
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9. When using Branching, the usual sequencing of the PC is altered. A new instruction is loaded which is called as ______
a) Branch target
b) Loop target
c) Forward target
d) Jump instruction
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10. The condition flag Z is set to 1 to indicate _______
a) The operation has resulted in an error
b) The operation requires an interrupt call
c) The result is zero
d) There is no empty register available
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Sanfoundry Global Education & Learning Series – Computer Organization and Architecture.

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