Top 250+ Solved Operating System Advanced MCQ Questions Answer
Q. In multi processor scheduling; A: Coarse gained parallelism, B: Medium grained parallelism, C: Fine grained parallelism; 1- Concurrent processes running on a multi programmed uni processor, 2 Parallel processing or multi tasking is done within a single application, 3-Parallel processing is done within a single instruction stream.
a. A – 1, B – 2, C – 3
b. A – 2, B – 3, C – 1
c. A – 3, B – 2, C – 1
d. A – 1, B – 3, C – 2
Q. A situation where two or more processes coordinate their activities based on a condition is referred as
a. Synchronization
b. Dead lock
c. Starvation
d. Par begin
Q. Par begin (P1)
a. Suspends main program, execute procedure P1 and after execution resume main program.
b. Procedure P1 is delayed infinitely due to other procedure are given preference.
c. Procedure P1 is not considered for execution.
d. None of these.
Q. The mail box and ports are examples of
a. Indirect process communication
b. Direct process communication.
c. Both A and B true
d. None is true
Q. In Dynamic partition of main memory in memory management, the sized of process and memory partition is
a. of exactly same size
b. of different size.
c. Both A and B true
d. None is true
Q. In the simple paging in memory management where
a. Process can be loaded into a partition of equal or greater size.
b. Process is loaded into a partition of exactly same size.
c. Process is divided into a number of equal size pages of same length as of frames.
d. None of these.
Q. A. Absolute Loading B. Relocatable LoadingC. Dynamic Run-Time Loading; 1- It requires that a load module always be loaded into some location in main memory. 2- A load module can be located anywhere in main memory.
a. A – 2, B – 1, C – 1
b. A – 1, B – 1, C – 2
c. A – 1, B – 2, C – 2
d. A – 1, B – 2, C – 1
Q. The disk and tape devices are referred as
a. Block oriented I/O devices
b. Stream oriented I/O devices
c. Logical I/O devices
d. None of these
Q. Which of the following is not human readable I/O device ?
a. Video display terminals
b. Key board
c. Printers
d. Disk drives
Q. Following is not the stream oriented I/Odevice
a. Printer
b. Mouse
c. Communication modules
d. Disk/tape
Q. The direct memory access (DM(A) module
a. Controls the data exchange between main memory and I/O module.
b. The processor issues I/O command, execute subsequent instructions and interrupt I/O module.
c. The processor issues I/O commands to an I/O module.
d. None of these.
Q. The access time in disk scheduling is
a. The time taken to position the head at the track.
b. The time taken to reach the beginning of the sector of the track.
c. The sum of seek time and rotational delay.
d. None of these.
Q. The transfer time in disk scheduling is
a. Proportional to rotation speed.
b. Inversely proportional to rotation speed.
Q. In last- in-first- out, disk scheduling policy
a. Recently received request is entertained at the last.
b. Recently received request is entertained first.
c. Requests are selected at random
d. None of these.
Q. In disk scheduling, SCAN algorithm states
a. The arm is required to move in one direction only.
b. The arm can be moved in any direction.