Computer Organization and Architecture Mcqs

45. When the CPU detects an interrupt, it then saves its:
(a) Previous State
(b) Next State
(c) Both A and B
(d) Current State

View Answer
(d) Current State

46. An exception conditions in a computer system by an event external to the CPU is called:
(a) Halt
(b) Interrupt
(c) Wait
(d) process

View Answer
(b) Interrupt

47. Striking key stores the corresponding character code in a 8-bit buffer register associated with the keyboard. This register is called as:
(a) Data in out
(b) Data out
(c) Both A and B
(d) Data In

View Answer
(d) Data In

48. Memory access in RISC architecture is limited to instructions:
(a) CALL and RET
(b) MOV and JMP
(c) STA and LDA
(d) Push and Pop

View Answer
(c) STA and LDA

49. A simple way of performing I/O tasks is to use a method known as:
(a) program-controlled input
(b) program-controlled output
(c) I/O operation
(d) program-controlled input/output

View Answer
(d) program-controlled input/output

50. Interrupts which are initiated by an instruction are:
(a) internal
(b) external
(c) hardware
(d) software

View Answer
(b) external

 

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