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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!

Q91

Q91 When a USB device is not recognized by the system, a useful troubleshooting step is to:

A

Update the device drivers

B

Check the device on another computer

C

Try a different USB port

D

Restart the computer

Q92

Q92 Solving intermittent device disconnection issues might require examining:

A

The device's firmware version

B

The power management settings for the USB ports

C

The length and quality of the connection cables

D

All of the above

Q93

Q93 What is the primary purpose of virtualization in computing?

A

To increase physical hardware costs

B

To reduce the number of physical servers required

C

To slow down computing processes

D

To complicate IT management

Q94

Q94 Cloud computing primarily enables users to:

A

Store data locally on physical drives

B

Access computing resources over the internet

C

Use software without internet access

D

Increase data processing time

Q95

Q95 Which of the following is a characteristic of cloud computing?

A

Limited scalability

B

Pay-per-use pricing model

C

Dependency on local infrastructure

D

Reduced access to computing resources

Q96

Q96 In virtualization, what does a hypervisor do?

A

Acts as a physical server for virtual machines

B

Manages network traffic exclusively

C

Enables direct communication between virtual machines

D

Manages and creates virtual machines

Q97

Q97 What advantage does Platform as a Service (PaaS) provide to developers?

A

Manual management of underlying hardware

B

Limited programming language support

C

Preconfigured development environments

D

Requires extensive system administration skills

Q98

Q98 What distinguishes private cloud from public cloud computing?

A

Private cloud is accessible by any user over the internet

B

Public cloud is hosted on-premises

C

Private cloud services are dedicated to a single organization

D

Public cloud is always less secure

Q99

Q99 Serverless computing allows developers to:

A

Buy servers directly from cloud providers

B

Focus on server maintenance and management

C

Build and run applications without thinking about servers

D

Manually scale cloud resources

Q100

Q100 Which AWS service is a managed NoSQL database?

A

Amazon RDS

B

Amazon S3

C

Amazon EC2

D

Amazon DynamoDB

Q101

Q101 To automate the deployment of applications in a scalable and secure manner, you would use:

A

Kubernetes

B

Docker

C

VirtualBox

D

VMware

Q102

Q102 If a virtual machine (VM) is not starting, the first thing to check should be:

A

The VM's physical hardware compatibility

B

The network connection speed

C

The configuration settings of the VM

D

The color depth of the VM's monitor

Q103

Q103 A cloud application is experiencing intermittent connectivity issues. To diagnose, you should check:

A

The application's codebase for errors

B

The cloud service provider's status page for outages

C

The color settings of the application

D

The font size used in the application

Q104

Q104 When deploying a new service in a containerized environment fails, a potential cause could be:

A

Incompatible container image versions

B

Incorrect user privileges set on the host machine

C

Both options are potential causes

D

The container's color scheme

Q105

Q105 Which of the following best describes a firewall?

A

A physical device that cools down the server

B

A software tool to manage data storage

C

A security system that controls the incoming and outgoing network traffic based on predetermined security rules

D

A protocol for secure file transfer

Q106

Q106 In the context of security, what is encryption?

A

The process of converting plaintext into a secure format to prevent unauthorized access

B

The process of removing viruses from a computer

C

The act of physically securing computing devices

D

The practice of safe web browsing

Q107

Q107 What is a Denial of Service (DoS) attack?

A

An attack that prevents users from accessing a particular website by overwhelming it with traffic

B

A virus that deletes files from the infected computer

C

A phishing attempt to steal personal information

D

An exploit in software code

Q108

Q108 What is the principle of least privilege?

A

Granting users the maximum permissions available

B

Granting users only the permissions they need to perform their tasks

C

A method of password protection

D

A firewall configuration technique

Q109

Q109 What distinguishes a ransomware attack from other forms of malware?

A

It spreads across networks autonomously

B

It encrypts files on the victim's system and demands payment for decryption keys

C

It is undetectable by antivirus software

D

It can operate without an internet connection

Q110

Q110 What is a zero-day exploit?

A

A vulnerability that has been known for less than 24 hours

B

A vulnerability that affects zero devices

C

An exploit that takes advantage of a previously unknown vulnerability in software

D

A bug that can be fixed in zero days

Q111

Q111 In cybersecurity, what is social engineering?

A

The process of building secure networks

B

The technical method of breaking encryption codes

C

The use of deception to manipulate individuals into divulging confidential or personal information

D

The study of computing in society

Q112

Q112 Which mechanism is primarily used in intrusion detection systems (IDS) to identify potential security breaches?

A

Signature-based detection

B

Machine learning algorithms

C

Password strength meters

D

Firewall rules

Q113

Q113 To securely hash passwords in a Python application, which module provides robust methods for this purpose?

A

hashlib

B

crypt

C

ssl

D

os

Q114

Q114 Which HTTPS status code indicates that the requested resource is available only through a proxy and the proxy must be provided?

A

305 Use Proxy

B

404 Not Found

C

502 Bad Gateway

D

403 Forbidden

Q115

Q115 When debugging a web application for security flaws, what tool can help identify vulnerabilities like SQL injection?

A

A web framework debugger

B

A static code analyzer

C

A packet sniffer

D

A browser's developer console

Q116

Q116 To mitigate an identified SQL injection vulnerability in a web application, you should:

A

Remove all forms from the application

B

Use simple quotes to enclose all SQL strings

C

Validate and sanitize all user inputs

D

Increase the database's storage capacity

Q117

Q117 What approach can be taken to secure a system after detecting unauthorized access through a network service?

A

Disabling the network service and applying necessary patches or updates

B

Increasing the bandwidth of the network

C

Changing the network service's port number

D

Using stronger network cables

Q118

Q118 What is a key feature of distributed systems?

A

Centralized management

B

Scalability and concurrency

C

Single-point failure

D

Manual synchronization

Q119

Q119 How are consistency models important in distributed systems?

A

They dictate the system's power consumption

B

They outline data storage and retrieval rules

C

They control the user interface design

D

They manage network traffic

Q120

Q120 What does the CAP theorem address?

A

CPU usage and performance

B

Network setup and latency

C

Trade-offs between consistency, availability, and partition tolerance

D

Data encryption standards

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