Computer Organization and Architecture Multiple Choice Questions on “Superscalar Processors”.
1. The throughput of a super scalar processor is _______
a) less than 1
b) 1
c) More than 1
d) Not Known
Answer: c
Clarification: The throughput of a processor is measured by using the number of instructions executed per second.
2. When the processor executes multiple instructions at a time it is said to use _______
a) single issue
b) Multiplicity
c) Visualization
d) Multiple issues
Answer: d
Clarification: None.
3. The ______ plays a very vital role in case of super scalar processors.
a) Compilers
b) Motherboard
c) Memory
d) Peripherals
Answer: a
Clarification: The compilers are programmed to arrange the instructions to get more throughput.
4. If an exception is raised and the succeeding instructions are executed completely, then the processor is said to have ______
a) Exception handling
b) Imprecise exceptions
c) Error correction
d) None of the mentioned
Answer: b
Clarification: The processor since as executed the following instructions even though an exception was raised, hence the exception is treated as imprecise.
5. In super-scalar mode, all the similar instructions are grouped and executed together.
a) True
b) False
Answer: a
Clarification: The instructions are grouped meaning that the instructions fetch and decode and other cycles are overlapped.
6. In super-scalar processors, ________ mode of execution is used.
a) In-order
b) Post order
c) Out of order
d) None of the mentioned
Answer: c
Clarification: It follows out of order execution to speed up the execution of instructions.
7. Since it uses the out of order mode of execution, the results are stored in ______
a) Buffers
b) Special memory locations
c) Temporary registers
d) TLB
Answer: c
Clarification: The results are stored in temporary locations and are arranged afterward.
8. The step where in the results stored in the temporary register is transferred into the permanent register is called as ______
a) Final step
b) Commitment step
c) Last step
d) Inception step
Answer: b
Clarification: None.
9. A special unit used to govern the out of order execution of the instructions is called as ______
a) Commitment unit
b) Temporal unit
c) Monitor
d) Supervisory unit
Answer: a
Clarification: This unit monitors the execution of the instructions and makes sure that the final result is in order.
10. The commitment unit uses a queue called ______
a) Record buffer
b) Commitment buffer
c) Storage buffer
d) None of the mentioned
Answer: a