Multiple Choice Questions and Answers
Question 1 : Keyboard, mouse and printer are
(a) Human readable devices
(b) Machine readable devices
(c) Communication devices
(d) None of the above
Answer : (a)
Question 2 : SPOOLING stands for
(a) Spontaneous Peripheral operation online
(b) Small peripheral operation online
(c) Simultaneous peripheral operation online
(d) None of the above
Answer : (c)
Question 3 : Input transfers are done in advance and output transfers after sometime, in which of these techniques
(a) SPOOLING
(b) Buffering
(c) Swapping
(d) None of the above
Answer : (b)
Question 4 : Doubling buffering is also known as
(a) Anticipated Buffering
(b) Buffer Swapping
(c) Circular Buffering
(d) None of the above
Answer : (b)
Question 5 : With no buffering method, the execution time per block is given by
(a) Time = T + C
(b) Time = T – C
(c) Time = T / C
(d) Time = T * C
Answer : (a)
Question 6 : In double buffering, an I/O device is at full speed implies
(a) (C+M) > T
(b) (C+M) = T
(c) (C+M) < T
(d) None of the above
Answer : (c)
Question 7 : A virtual device is
(a) Dedicated for one purpose
(b) A shared device converted to a dedicated device
(c) A dedicated device converted to a shared device
(d) None of the above
Answer : (b)
Question 8 : A technique that smoothes out peaks in I/O demand is
(a) Spooling
(b) Buffering
(c) Swapping
(d) None of the above
Answer : (b)
Question 9 : UCB stands for
(a) Unified Control Block
(b) Unit Control Block
(c) Universal Control Block
(d) None of the above
Answer : (b)
Question 10 : Error handling and I/O interrupt handling are the functions of
(a) I/O Device Handler
(b) I/O Traffic Controller
(c) I/O Scheduler
(d) None of the above
Answer : (a)