11. Which of the following processor can execute two instructions per cycle?
A. 80486
B. 80386DX
C. Intel Pentium
D. 80386
Answer: c
Intel Pentium has many advanced features one of which is, that it can execute two instructions per cycle thus improving the speed of the processor whereas 80486, 80386, and 80386DX do not have this feature.
12. Which of the following processors have two five-stage pipelines?
A. 80486
B. 80386
C. Intel Pentium
D. 80386DX
Answer: c
The intel Pentium possess two five-stage pipelines which allow the execution of two integer instruction jointly.
13. In which processor does the control register and system management mode register first appeared?
A. 80386
B. 80386SL
C. 80386DX
D. 80486
Answer: b
The control register and system management mode register first appeared in 80386SL and were later on succeeded by other processors. These registers can provide intelligent power control.
14. Which is the next successor of Intel Pentium?
A. Pentium pro
B. P1
C. P2
D. P5
Answer: a
Intel Pentium is succeeded by Pentium pro. P1, P2, and P5 are the other processors of Intel.
15. Which of the following processor allows a multiple branch prediction?
A. 80386
B. P1
C. Intel Pentium
D. Intel Pentium pro
Answer: d
A branch instruction can change the program flow and multiple branch prediction allows the continuous execution of instructions based on assumptions. This can eliminate delay and thus speeds up the execution.
16. Which are the processors based on RISC?
A. SPARC
B. 80386
C. MC68030
D. MC68020
Answer: A
SPARC and MIPS processors are the first generation processors of RISC architecture.
17. What is the 80/20 rule?
A. 80% instruction is generated and 20% instruction is executed
B. 80% instruction is executed and 20% instruction is generated
C. 80%instruction is executed and 20% of instruction is not executed
D. 80% of instruction is generated and 20% of instructions are not generated
Answer: A
80% of instructions are generated and only 20% of the instruction set is executed that is, by simplifying the instructions, the performance of the processor can be increased which leads to the formation of RISC which is a reduced instruction set computing.
18. Which of the architecture is more complex?
A. SPARC
B. MC68030
C. MC68030
D. 8086
Answer: A
SPARC has RISC architecture which has a simple instruction set but MC68020, MC68030, and 8086 have CISC architecture which is more complex than CISC.
19. Which is the first company that defined RISC architecture?
A. Intel
B. IBM
C. Motorola
D. MIPS
Answer: B
In the 1970s IBM identified RISC architecture.
20. Which of the following processors execute its instruction in a single cycle?
A. 8086
B. 8088
C. 8087
D. MIPS R2000
Answer: D
MIPS R2000 possesses RISC architecture in which the processor executes its instruction in a single clock cycle and also synthesizes complex operations from the same reduced instruction set.
