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Most Important MCQ's Of Operating System
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1. What is an operating system?
1 point
a) interface between the hardware and application programs
b) collection of programs that manages hardware resources
c) system service provider to the application programs
d) all of the mentioned
Clear selection
2. What is the main function of the command interpreter?
1 point
a) to provide the interface between the API and application program
b) to handle the files in the operating system
c) to get and execute the next user-specified command
d) none of the mentioned
Clear selection
3. In Operating Systems, which of the following is/are CPU scheduling algorithms?
1 point
a) Priority
b) Round Robin
c) Shortest Job First
d) All of the mentioned
Clear selection
4. Which of the following is not an operating system?
1 point
Windows
Linux
Oracle
DOS
Clear selection
5.Which of the following are CPU scheduling algorithms?
1 point
Priority scheduling
Round Robin
Shortest Job First
All of the above
Clear selection
6. CPU scheduling is the basis of ___________
1 point
a) multiprogramming operating systems
b) larger memory sized systems
c) multiprocessor systems
d) none of the mentioned
Clear selection
7. Which one of the following errors will be handle by the operating system?
1 point
a) lack of paper in printer
b) connection failure in the network
c) power failure
d) all of the mentioned
Clear selection
8. Where is the operating system placed in the memory?
1 point
a) either low or high memory (depending on the location of interrupt vector)
b) in the low memory
c) in the high memory
d) none of the mentioned
Clear selection
9. If a process fails, most operating system write the error information to a ______
1 point
a) new file
b) another running process
c) log file
d) none of the mentioned
Clear selection
10. I
n operating system, each process has its own __________
1 point
a) open files
b) pending alarms, signals, and signal handlers
c) address space and global variables
d) all of the mentioned
Clear selection
11.
What is the maximum length of the filename in DOS?
1 point
4
5
8
12
Clear selection
12.
When was the first operating system developed?
1 point
1948
1949
1950
1951
Clear selection
13. Which of the following is the extension of Notepad?
1 point
.txt
.xls
.ppt
.bmp
Clear selection
14
What else is a command interpreter called?
1 point
prompt
kernel
shell
command
Clear selection
15.
What is the full name of FAT?
1 point
File attribute table
File allocation table
Font attribute table
Format allocation table
Clear selection
16.
BIOS is used?
1 point
By operating system
By compiler
By interpreter
By application software
Clear selection
17.
What is the mean of the Booting in the operating system?
1 point
Restarting computer
Install the program
To scan
To turn off
Clear selection
18.
When does page fault occur?
1 point
The page is present in memory.
The deadlock occurs.
The page does not present in memory.
The buffering occurs.
Clear selection
19.
Banker's algorithm is used?
1 point
To prevent deadlock
To deadlock recovery
To solve the deadlock
None of these
Clear selection
20.
When you delete a file in your computer, where does it go?
1 point
Recycle bin
Hard disk
Taskbar
None of these
Clear selection
21.
Which is the Linux operating system?
1 point
Private operating system
Windows operating system
Open-source operating system
None of these
Clear selection
22.
What is the full name of the DSM?
1 point
Direct system module
Direct system memory
Demoralized system memory
Distributed shared memory
Clear selection
23.
What is the full name of the IDL?
1 point
Interface definition language
Interface direct language
Interface data library
None of these
Clear selection
24.
If the page size increases, the internal fragmentation is also?..?
1 point
Decreases
Increases
Remains constant
None of these
Clear selection
25.
Which of the following is a single-user operating system?
1 point
Windows
MAC
Ms-Dos
None of these
Clear selection
26.
The size of virtual memory is based on which of the following?
1 point
CPU
RAM
Address bus
Data bus
Clear selection
27.
Which of the following is not application software?
1 point
Windows 7
WordPad
Photoshop
MS-excel
Clear selection
28.
When a process is in a “Blocked” state waiting for some I/O service. When the service is completed, it goes to the __________
1 point
a) Terminated state
b) Suspended state
c) Running state
d) Ready state
Clear selection
29.
Transient operating system code is a code that ____________
1 point
a) stays in the memory always
b) never enters the memory space
c) comes and goes as needed
d) is not easily accessible
Clear selection
30.
The FCFS algorithm is particularly troublesome for ____________
1 point
a) operating systems
b) multiprocessor systems
c) time sharing systems
d) multiprogramming systems
Clear selection
31.
A deadlock avoidance algorithm dynamically examines the __________ to ensure that a circular wait condition can never exist.
1 point
a) operating system
b) resources
c) system storage state
d) resource allocation state
Clear selection
32.
The main memory accommodates ____________
1 point
a) cpu
b) user processes
c) operating system
d) all of the mentioned
Clear selection
34.
The operating system is responsible for?
1 point
a) bad-block recovery
b) booting from disk
c) disk initialization
d) all of the mentioned
Clear selection
35.
In real time operating system ____________
1 point
a) process scheduling can be done only once
b) all processes have the same priority
c) kernel is not required
d) a task must be serviced by its deadline period
Clear selection
36.
The information about all files is kept in ____________
1 point
a) operating system
b) separate directory structure
c) swap space
d) none of the mentioned
Clear selection
37. Which of the following operating systems does not support more than one program at a time?
1 point
Linux
Windows
MAC
DOS
Clear selection
38.
Which of the following is a condition that causes deadlock?
1 point
Mutual exclusion
Hold and wait
Circular wait
No preemption
All of these
Clear selection
39.
Who provides the interface to access the services of the operating system?
1 point
API
System call
Library
Assembly instruction
Clear selection
40.
Who among the following can block the running process?
1 point
Fork
Read
Down
All of these
Clear selection
41. What is Microsoft window?
1 point
Operating system
Graphics program
Word Processing
Database program
Clear selection
42.
Which of the following is group of programs?
1 point
Accessories
Paint
Word
All of above
Clear selection
43.
What type of commands are required to perform various tasks in DOS?
1 point
Internal commands
External commands
Valuable commands
Primary commands
Clear selection
44.
Which command is used to fetch a group (.doc) of files that have just been deleted?
1 point
Undelete
Undelete/all
Undelete *.doc
All of above
Clear selection
45.
Which of the following is system software?
1 point
Operating system
Compiler
Utilities
All of the above
Clear selection
46. Which program runs first after booting the computer and loading the GUI?
1 point
Desktop Manager
File Manager
Windows Explorer
Authentication
Clear selection
47.
Network operating system runs on ___________
1 point
a) every system in the network
b) server
c) both server and every system in the network
d) none of the mentioned
Clear selection
48 .
What are the types of distributed operating systems?
1 point
a) Zone based Operating system
b) Level based Operating system
c) Network Operating system
d) All of the mentioned
Clear selection
49.
In Unix, which system call creates the new process?
1 point
a) create
b) fork
c) new
d) none of the mentioned
Clear selection
50.
The swap space in a disk is primarily used to:
1 point
a. Save process data
b. Save temporary HTML pages
c. Store the device drivers
d. Store the super-block
Clear selection
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