Operating systems concept MCQ Test 16

By | October 3, 2017
Question 1
Thrashing
A
is a natural consequences of virtual memory system
B
can always be avoided by swapping
C
always occurs on large computers
D
can be caused by poor paging algorithms
Question 2
For I/O bound jobs, in a uniprogramming process CPU can be in idle state for
A
10-20% of time
B
30-40% of time
C
60-70% of time
D
80-90% of time
Question 3
A scheduling algorithm assigns priority proportional to the waiting time of a process. Every process starts with priority zero (the lowest priority). The scheduler re-evaluates the process priorities every T time units and decides the next process to schedule. Which one of the following is TRUE if the processes have no I/O operations and all arrive at time zero?
A
This algorithm is equivalent to the first-come-first-serve algorithm
B
This algorithm is equivalent to the round-robin algorithm
C
This algorithm is equivalent to the shortest-job-first algorithm
D
This algorithm is equivalent to the shortest-remaining-time-first algorithm
Question 4
Process in which a program is written to respond to the button clicks, menu selections, and other actions of user in whatever order is termed as
A
event-driven programming
B
action-driven programming
C
user-driven programming
D
mouse-driven programming
Question 5
The kernel of the operating system remains in the primary memory because .....
A
It is mostly called (used)
B
It manages all interrupt calls
C
It controls all operations in process
D
It is low level
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There are 5 questions to complete.

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