Operating systems concept MCQ Test 3

UGC-NET/GATE Multiple Choice Questions for Operating System.

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Question 1
When high priority task is indirectly preempted by medium priority task effectively inverting the relative priority of the two tasks, the scenario is called
A
priority inversion
B
priority removal
C
priority exchange
D
priority modification
Question 2
The device-status table contains
A
each I/O device type
B
each I/O device address
C
each I/O device state
D
all of the above
Question 3
Preemptive Shortest Job First scheduling is sometimes called :
A
Fast SJF scheduling
B
EDF scheduling Earliest Deadline First
C
HRRN scheduling Highest Response Ratio Next
D
SRTN scheduling Shortest Remaining Time Next
Question 4
What is the advantage of caching in remote file access ?
A
Reduced network traffic by retaining recently accessed disk blocks
B
Faster network access.
C
Copies of data creates backup automatically
D
none of the above
Question 5
What is Domain ?
A
Domain = Set of all objects
B
It is a collection of protection policies
C
Domain= set of access-rights
D
none of the above
Question 6
Addressing modes
A
are variations in the use of fundamental addressing structures, or some associated actions which are related to addressing.
B
performs indicated operations on two fast registers of the machine and leave the result in one of the registers.
C
all of the above
D
None of the above
Question 7
The size of a process is limited to the size of :
A
physical memory
B
external storage
C
secondary storage
D
none of the above
Question 8
Single coordinator approach has the following advantages :
  1. Simple implementation
  2. Simple deadlock handling
  3. Speed of operation
  4. No bottleneck
A
I and III
B
II and III
C
II, III and IV
D
I and II
Question 9
The two types of streaming techniques are :
  1. progressive download
  2. regular download
  3. real time streaming
  4. virtual time streaming
A
I and II
B
II and III
C
II, III and IV
D
I and III
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