(18) Multiple Choice(3 points for each): 1) Which of the following statement is
ID: 3598929 • Letter: #
Question
(18) Multiple Choice(3 points for each): 1) Which of the following statement is true for DMA: 1. A In DMA, Processor checks sta B. In DMA, Processor is interrupt when 1/O module ready to exchange data C. In DMA, no interrupt is produced tus until operation is complete In DMA, interrupt is sent when the task is complete E. None of the above ing i volsili emor? A. Main memory B. CD/DVD C. Hard disk D. Flash memory E. None of the above 3) Which of the following instructions should be allowed only in kernel mode? a. b. c. d. a, b, c, d Disable all interrupts Read the time-of-day clock Set the time-of-day clock Change the memory map A. B. a, d c, D. a, c,d E. a, b,c The earliest OS is A. monolithic B. modular C. Microkernel D. Modules E. None of the above 4) 5) One process is waiting for the input from the user, which state is this process most prob A. Ready B. Running C. Waiting D. New E. Terminated 6) Which of the following CPU algorithms are preemptive? a. FCFS b. Shortest Job Next c. Shorted Remaining Time Next d. Round Robin e. Highest Response RatioExplanation / Answer
ANSWER
1)
OPTION C
NO INTERUPPTION WILL BE DONE IN DIRECT MEMORY ACCESS
2)
OPTION A
MAIN MEMORY i.e., NOTHING BUT RAM
3)
OPTION E
EXCEPT CHANGE OF MEMORY ALL INSTRUCTION ARE ALLOWED BY KERNAL MODE
4)
OPTION A
FIRST OS TYPE MONOLYTHIC
5)
OPTION A
Ready state when the processor is waiting to take input.
6)
EXPECT OPTION E
REMAINING ALL ARE PREEMPTIVE.
I HAVE GIVEN ANSWERS FOR ALL
THANK YOU FOR THE OPPURTUNITY
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.