Cyber Security MCQs

Computer

Cyber Security MCQs

Practice Cyber Security MCQs covering viruses, malware, phishing, hacking, firewall, antivirus and cybersecurity concepts with answers and explanations.

269
Total Questions

Practice Questions

Page 12 of 14
Question #221
What is the role of encryption in protecting data?
A. To reduce data speed
B. To ensure data confidentiality and integrity
C. To delete data
D. To increase data size
Discuss
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Correct Answer: Option B

Explanation:
Encryption protects data confidentiality by making it unreadable to unauthorized parties and ensures integrity by detecting any unauthorized modifications to the data.
This question belongs to: Computer Cyber Security
Question #222
Which of the following is a method to detect phishing emails?
A. Ignoring all security warnings
B. Replying to the email with personal information
C. Clicking on all links in the email
D. Checking the sender's email address carefully
Discuss
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Correct Answer: Option D

Explanation:
Carefully checking the sender's email address and being cautious with links and attachments are key methods to identify phishing emails.
This question belongs to: Computer Cyber Security
Question #223
What is 'cyber resilience'?
A. The ability to increase system speed
B. The ability to ignore cyber threats
C. The ability to prevent all cyber attacks
D. The ability to continuously deliver the intended outcome despite adverse cyber events
Discuss
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Correct Answer: Option D

Explanation:
Cyber resilience is the ability of an organization to prepare for, respond to, and recover from cyber attacks while maintaining business operations.
This question belongs to: Computer Cyber Security
Question #224
Which of the following is a type of malware that displays unwanted pop-up ads?
A. Adware
B. Spyware
C. Trojan
D. Ransomware
Discuss
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Correct Answer: Option A

Explanation:
Adware is a type of malware that automatically displays or downloads unwanted advertisements, often in the form of pop-up ads, without the user's consent.
This question belongs to: Computer Cyber Security
Question #225
What is the purpose of a security patch management process?
A. To increase system performance
B. To manage user accounts
C. To install new software
D. To ensure timely installation of security updates
Discuss
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Correct Answer: Option D

Explanation:
Patch management is the process of identifying, acquiring, testing, and installing patches to fix vulnerabilities in software and systems, maintaining security.
This question belongs to: Computer Cyber Security
Question #226
Which of the following is a common technique used in social engineering?
A. Baiting
B. Using antivirus
C. Installing a firewall
D. Encrypting data
Discuss
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Correct Answer: Option A

Explanation:
Baiting is a social engineering technique that lures victims with a promise of a reward, such as a free download, to trick them into installing malware or revealing information.
This question belongs to: Computer Cyber Security
Question #227
What is the role of a network firewall?
A. To detect and remove viruses
B. To increase network speed
C. To block unauthorized access while permitting authorized communications
D. To provide backup services
Discuss
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Correct Answer: Option C

Explanation:
A network firewall controls incoming and outgoing network traffic based on security rules, allowing authorized traffic and blocking unauthorized access.
This question belongs to: Computer Cyber Security
Question #228
Which of the following is a type of cyber attack that targets a specific individual with personalized information?
A. Phishing
B. Whaling
C. Vishing
D. Spear phishing
Discuss
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Correct Answer: Option D

Explanation:
Spear phishing is a targeted phishing attack that uses personalized information to deceive a specific individual, often appearing highly credible.
This question belongs to: Computer Cyber Security
Question #229
What is the purpose of a digital signature?
A. To encrypt a message
B. To speed up message delivery
C. To verify the authenticity and integrity of a message
D. To compress a message
Discuss
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Correct Answer: Option C

Explanation:
A digital signature provides authentication and integrity verification, ensuring that a message or document comes from the claimed sender and has not been altered.
This question belongs to: Computer Cyber Security
Question #230
Which of the following is a common security risk associated with email?
A. All of the above
B. Malware attachments
C. Spam
D. Phishing attacks
Discuss
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Correct Answer: Option A

Explanation:
Email is a common vector for various security risks, including phishing attacks, spam, and malware attachments, requiring caution and security measures.
This question belongs to: Computer Cyber Security
Question #231
What is 'whaling' in cybersecurity?
A. A phishing attack targeting high-profile individuals like CEOs
B. A physical attack
C. A type of virus
D. A type of firewall
Discuss
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Correct Answer: Option A

Explanation:
Whaling is a specific type of phishing attack that targets senior executives or high-profile individuals within an organization, often using sophisticated and personalized messages.
This question belongs to: Computer Cyber Security
Question #232
Which of the following is a method to protect against malware?
A. Opening all email attachments
B. Installing and updating antivirus software
C. Using unsecured networks
D. Disabling all security software
Discuss
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Correct Answer: Option B

Explanation:
Installing and regularly updating antivirus software is a fundamental method to protect against malware infections.
This question belongs to: Computer Cyber Security
Question #233
What is the purpose of a security information and event management (SIEM) system?
A. To provide real-time analysis of security alerts
B. To install software
C. To manage employee schedules
D. To handle customer complaints
Discuss
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Correct Answer: Option A

Explanation:
A SIEM system collects and analyzes security alerts and logs from various sources, providing real-time analysis to detect and respond to potential threats.
This question belongs to: Computer Cyber Security
Question #234
Which of the following is a common type of attack against passwords?
A. Man-in-the-middle
B. Dictionary attack
C. Denial-of-service
D. Phishing
Discuss
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Correct Answer: Option B

Explanation:
A dictionary attack uses a list of common words and phrases to guess a password, exploiting weak passwords that are based on dictionary words.
This question belongs to: Computer Cyber Security
Question #235
What is the role of a firewall in a home network?
A. To protect devices from external threats
B. To provide Wi-Fi connectivity
C. To increase internet speed
D. To manage user accounts
Discuss
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Correct Answer: Option A

Explanation:
A home firewall protects personal devices from unauthorized access and malicious traffic coming from the internet.
This question belongs to: Computer Cyber Security
Question #236
Which of the following is a characteristic of a secure network design?
A. Use of default passwords
B. Disabled firewalls
C. Segmentation of network
D. Open access for all
Discuss
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Correct Answer: Option C

Explanation:
Network segmentation divides a network into smaller, isolated segments, limiting the spread of attacks and improving security.
This question belongs to: Computer Cyber Security
Question #237
What is the purpose of a security awareness campaign?
A. To manage employee attendance
B. To increase company sales
C. To develop new products
D. To educate employees about cybersecurity best practices
Discuss
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Correct Answer: Option D

Explanation:
A security awareness campaign aims to educate employees about cybersecurity risks and best practices, fostering a culture of security within the organization.
This question belongs to: Computer Cyber Security
Question #238
Which of the following is a type of malware that steals personal information?
A. Spyware
B. Ransomware
C. Worm
D. Adware
Discuss
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Correct Answer: Option A

Explanation:
Spyware is designed to secretly monitor and collect personal information, such as browsing habits, keystrokes, and login credentials, without the user's knowledge.
This question belongs to: Computer Cyber Security
Question #239
What is the role of encryption in securing data at rest?
A. To increase data speed
B. To delete data
C. To compress data
D. To protect data stored on devices from unauthorized access
Discuss
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Correct Answer: Option D

Explanation:
Encryption of data at rest protects stored data, such as files on a hard drive, by making it unreadable to unauthorized users.
This question belongs to: Computer Cyber Security
Question #240
Which of the following is a common technique used in DoS attacks?
A. Installing a virus
B. Encrypting files
C. Sending phishing emails
D. Flooding the target with network traffic
Discuss
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Correct Answer: Option D

Explanation:
A Denial-of-Service (DoS) attack involves overwhelming a target with a flood of network traffic, rendering it unavailable to its intended users.
This question belongs to: Computer Cyber Security

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