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Operating System Multiple Choice Questions (MCQs) and Answers

Master Operating System with Practice MCQs. Explore our curated collection of Multiple Choice Questions. Ideal for placement and interview preparation, our questions range from basic to advanced, ensuring comprehensive coverage of Operating System. Begin your placement preparation journey now!

Q61

Q61 In a paging system, which data structure is typically used to map virtual addresses to physical addresses?

A

Array

B

Hash table

C

Stack

D

Queue

Q62

Q62 If an application is crashing due to a segmentation fault, a possible cause could be:

A

The CPU is overheating

B

It is trying to access memory that it hasn't been allocated

C

There's insufficient disk space

D

The network connection is down

Q63

Q63 To diagnose a memory leak in an application, you would use:

A

A profiler

B

A debugger

C

A memory analysis tool

D

All of the above

Q64

Q64 When a system runs out of physical memory and heavily relies on swapping, you should consider:

A

Adding more physical memory

B

Closing unused applications

C

Upgrading the CPU

D

Installing faster storage

Q65

Q65 Analyzing and solving a problem where certain processes are unable to allocate memory might involve looking at:

A

The size of the swap space

B

Memory allocation algorithms

C

Application memory usage patterns

D

System cache settings

Q66

Q66 What is the primary function of a file system?

A

To provide security to the system

B

To manage the CPU's resources

C

To organize and manage files on storage media

D

To enhance network performance

Q67

Q67 Which of the following is an attribute of a file?

A

Color

B

Size

C

Shape

D

Texture

Q68

Q68 In a file system, what is the purpose of a directory?

A

To speed up the CPU

B

To store system configuration files only

C

To organize files into a hierarchy

D

To act as a temporary storage area

Q69

Q69 What does the term "inode" refer to in Unix-like file systems?

A

A network node that stores data

B

A directory entry that contains a file name

C

The data structure that stores information about a file

D

A protocol for file transfer

Q70

Q70 Which file system feature improves system performance by storing file fragments contiguously?

A

Fragmentation

B

Indexing

C

Journaling

D

Defragmentation

Q71

Q71 How does a journaling file system enhance data integrity?

A

By encrypting file data

B

By duplicating file entries

C

By keeping a log of changes to files before committing them to the main file system

D

By compressing files

Q72

Q72 RAID technology is used to:

A

Increase internet speed

B

Enhance CPU performance

C

Improve data storage reliability and performance

D

Only store backup data

Q73

Q73 What is the difference between a hard link and a symbolic link in a file system?

A

A hard link cannot cross file systems, whereas a symbolic link can

B

A symbolic link requires more disk space than a hard link

C

Only hard links can point to directories

D

All of the above

Q74

Q74 The process of converting a file system to a different type without losing data is known as:

A

Formatting

B

Partitioning

C

Mounting

D

Conversion

Q75

Q75 Which command in Linux is used to display the file system disk space usage?

A

df

B

du

C

ls

D

mount

Q76

Q76 In Unix-like systems, how can you create a symbolic link to a file?

A

Using the ln -s source destination command

B

Using the cp source destination command

C

Using the mklink source destination command

D

Using the link source destination command

Q77

Q77 A user reports that they cannot write data to a USB drive even though it appears to have free space. A possible cause is:

A

The file system's maximum file size limit is exceeded

B

The drive is formatted with a read-only file system

C

The USB drive is physically damaged

D

The file names are too long

Q78

Q78 To resolve an issue with a file system reporting incorrect free space, you might:

A

Reboot the computer

B

Run a file system check and repair utility

C

Defragment the disk

D

Increase the RAM

Q79

Q79 When a file system is consistently becoming corrupted on a hard drive, a likely action to take is:

A

Replacing the hard drive

B

Changing the file system type

C

Installing more memory

D

Updating the network drivers

Q80

Q80 If a database application crashes frequently and corrupts files on a networked storage, an investigation should consider:

A

The network stability

B

The database application's disk I/O operations

C

The file system compatibility with the database

D

All of the above

Q81

Q81 What is the primary purpose of an I/O system in a computer?

A

To increase the processing power of the CPU

B

To manage the computer's memory

C

To facilitate communication between the computer and external devices

D

To store data permanently

Q82

Q82 Which of the following is an example of an input device?

A

Monitor

B

Hard drive

C

Keyboard

D

Speaker

Q83

Q83 DMA is used in I/O operations to:

A

Decrease CPU usage

B

Directly access the memory without CPU intervention

C

Increase memory usage

D

Enhance network connectivity

Q84

Q84 An interrupt in a computer system is:

A

A signal to the operating system that a program has crashed

B

A signal indicating the completion of an I/O operation

C

A request for CPU processing time

D

None of the above

Q85

Q85 What role does a device driver play in a computer system?

A

It increases the speed of the device

B

It acts as an intermediary between the operating system and a hardware device

C

It stores data for the device

D

It powers the device

Q86

Q86 Polling and interrupts are methods used to:

A

Detect errors in software programs

B

Facilitate communication between a CPU and peripheral devices

C

Manage file transfers

D

Control access to the internet

Q87

Q87 The term "plug and play" in the context of I/O devices refers to:

A

Devices that can operate in multiple modes

B

Devices that require special adapters to function

C

Devices that can be added or removed without system reboot or needing manual configuration

D

Devices that come with built-in software

Q88

Q88 In Linux, the command to list all currently connected USB devices is:

A

lsusb

B

usblist

C

showusb

D

listusb

Q89

Q89 To change the permissions of a device file in Linux, which command is used?

A

chmod

B

chown

C

lsmod

D

modprobe

Q90

Q90 If a newly connected printer is not working, the first step should be to:

A

Check if the printer is turned on

B

Reinstall the operating system

C

Change the printer's USB cable

D

Update the BIOS

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