Operating System Set 25 MCQs

Q1 | The backing store is generally a

fast disk

disk large enough to accommodate copies of all memory imagesfor all users

disk to provide direct access to the memory images

all of the mentioned

Q2 | Memory management technique in which system stores and retrieves data from secondary storage for use in main

fragmentation

paging

mapping

None of the mentioned

Q3 | A Process Control Block(PCB) does not contain which of the following?

Code

Stack

Bootstrap Program

Data

Q4 | Which of the following condition(s) is/are required for a deadlock to be possible?

mutual exclusion

a process may hold allocated resources while awaiting

no resource can be forcibly removed from a process

All of the mentioned

Q5 | To avoid deadlock

there must be a fixed number of resources to

resource allocation must be done only

all deadlocked processes must be

inversion technique can be used

Q6 | What is the mounting of file system?

creating of a filesystem

deleting a filesystem

attaching portion of the file system into a directory

removing the portion of the file system into a directory structure

Q7 | Data cannot be written to secondary storage unless written within a

file

swap space

directory

text format

Q8 | The larger the block size, the the internal fragmentation.

greater

lesser

same

none of the mentioned

Q9 | With a shared file

actual file exists

there are two copies of the file

the changes made by one person are not reflected to the

the changes made by one person are reflected to the other

Q10 | What is operating system?

collection of programs that manages hardware resources

system service provider to the application programs

link to interface the hardware and application programs

all of the mentioned

Q11 | To access the services of operating system, the interface is provided by the

System calls

API

Library

Assembly instructions

Q12 | Which one of the following is not true?

Kernel is the program that constitutes the central core of the operating system

kernel is the first part of operating system to load into memory during booting

kernel is made of various modules which cannot be loaded in running operating system

kernel remains in the memory during the entire computer session

Q13 | Which one of the following error will be handle by the operating system?

Power failure

lack of paper in printer

connection failure in the network

all of the mentioned

Q14 | The main function of the command interpreter is

to get and execute the next user-specified command

to provide the interface between the API and application program

to handle the files in operating system

none of the mentioned

Q15 | By operating system, the resource management can be done via

time division multiplexing

space division multiplexing

both time and space division multiplexing

none of the mentioned

Q16 | If a process fails, most operating system write the error information to a ______

log file

another running process

new file

none of the mentioned

Q17 | Which one of the following is not a real time operating system?

VxWorks

Windows CE

RTLinux

Palm OS

Q18 | The OS X has ____________

monolithic kernel

hybrid kernel

microkernel

monolithic kernel with modules

Q19 | The systems which allows only one process execution at a time, are called

uniprogramming systems

uniprocessing systems

unitasking systems

none of the mentioned

Q20 | In operating system, each process has its own

address space and global variables

open files

pending alarms, signals and signal handlers

all of the mentioned

Q21 | In Unix, Which system call creates the new process?

fork

create

new

none of the mentioned

Q22 | A process can be terminated due to

normal exit

fatal error

killed by another process

all of the mentioned

Q23 | What is the ready state of a process?

when process is scheduled to run after some execution

when process is unable to run until some task has been completed

when process is using the CPU

none of the mentioned

Q24 | What is interprocess communication?

Communication within the process

communication between two process

communications between two threads of same process

none of the mentioned

Q25 | A set of processes is deadlock if

each process is blocked and will remain so forever

each process is terminated

all processes are trying to kill each other

none of the mentioned