Deck 9: Operating System and Process Management

Question 1

The FCFS algorithm is particularly troublesome for___________

A)time sharing systems
B)multiprogramming systems
C)multiprocessor systems
D)operating systems

Answer 1

multiprogramming systems

Question 2

What is 'Aging'?

A)keeping track of cache contents
B)keeping track of what pages are currently residing in memory
C)keeping track of how many times a given page is referenced
D)increasing the priority of jobs to ensure termination in a finite time

Answer 2

increasing the priority of jobs to ensure termination in a finite time

Question 3

An SJF algorithm is simply a priority algorithm where the priority is___________

A)the predicted next cpu burst
B)the inverse of the predicted next cpu burst
C)the current cpu burst
D)anything the user wants

Answer 3

the predicted next cpu burst

Question 4

Which of the following scheduling algorithms gives minimum average waiting time?

A)fcfs
B)sjf
C)round - robin
D)priority

Question 5

What is an operating system?

A)collection of programs that manages hardware resources
B)system service provider to the application programs
C)interface between the hardware and application programs
D)all of the mentioned

Question 6

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

A)system calls
B)api
C)library
D)assembly instructions

Question 7

Which one of the following is not true?

A)kernel is the program that constitutes the central core of the operating system
B)kernel is the first part of operating system to load into memory during booting
C)kernel is made of various modules which can not be loaded in running operating system
D)kernel remains in the memory during the entire computer session

Question 8

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

A)power failure
B)lack of paper in printer
C)connection failure in the network
D)all of the mentioned

Question 9

What is the main function of the command interpreter?

A)to get and execute the next user-specified command
B)to provide the interface between the api and application program
C)to handle the files in operating system
D)none of the mentioned

Question 10

In Operating Systems, which of the following is/are CPU scheduling algorithms?

A)round robin
B)shortest job first
C)priority
D)all of the mentioned

Question 11

If a process fails, most operating system write the error information to a___________  

A)log file
B)another running process
C)new file
D)none of the mentioned

Question 12

Which facility dynamically adds probes to a running system, both in user processes and in the kernel?

A)dtrace
B)dlocate
C)dmap
D)dadd

Question 13

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

A)vxworks
B)qnx
C)rtlinux
D)palm os

Question 14

The OS X has___________

A)monolithic kernel
B)hybrid kernel
C)microkernel
D)monolithic kernel with modules

Question 15

The systems which allow only one process execution at a time, are called___________      

A)uniprogramming systems
B)uniprocessing systems
C)unitasking systems
D)none of the mentioned

Question 16

In operating system, each process has its own___________      

A)address space and global variables
B)open files
C)pending alarms, signals and signal handlers
D)all of the mentioned

Question 17

In Unix, Which system call creates the new process?

A)fork
B)create
C)new
D)none of the mentioned

Question 18

What is interprocess communication?

A)communication within the process
B)communication between two process
C)communication between two threads of same process
D)none of the mentioned

Question 19

Which system call can be used by a parent process to determine the termination of child process?

A)wait
B)exit
C)fork
D)get

Question 20

The address of the next instruction to be executed by the current process is provided by the___________      

A)cpu registers
B)program counter
C)process stack
D)pipe

Question 21

The number of processes completed per unit time is known as___________      

A)output
B)throughput
C)efficiency
D)capacity

Question 22

Which of the following is not the state of a process?

A)new
B)old
C)waiting
D)running

Question 23

What is a Process Control Block?

A)process type variable
B)data structure
C)a secondary storage section
D)a block in memory

Question 24

The entry of all the PCBs of the current processes is in___________      

A)process register
B)program counter
C)process table
D)process unit

Question 25

What is the degree of multiprogramming?

A)the number of processes executed per unit time
B)the number of processes in the ready queue
C)the number of processes in the i/o queue
D)the number of processes in memory