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. Clicking on all links in the email
B. Replying to the email with personal information
C. Ignoring all security warnings
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 prevent all cyber attacks
B. The ability to ignore cyber threats
C. The ability to continuously deliver the intended outcome despite adverse cyber events
D. The ability to increase system speed
Discuss
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Correct Answer: Option C

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. Spyware
B. Adware
C. Ransomware
D. Trojan
Discuss
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Correct Answer: Option B

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 install new software
B. To manage user accounts
C. To ensure timely installation of security updates
D. To increase system performance
Discuss
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Correct Answer: Option C

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. Encrypting data
B. Using antivirus
C. Installing a firewall
D. Baiting
Discuss
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Correct Answer: Option D

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 provide backup services
C. To increase network speed
D. To block unauthorized access while permitting authorized communications
Discuss
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Correct Answer: Option D

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. Vishing
B. Whaling
C. Spear phishing
D. Phishing
Discuss
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Correct Answer: Option C

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 verify the authenticity and integrity of a message
B. To compress a message
C. To encrypt a message
D. To speed up message delivery
Discuss
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Correct Answer: Option A

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. Malware attachments
B. Spam
C. Phishing attacks
D. All of the above
Discuss
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Correct Answer: Option D

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 type of virus
B. A phishing attack targeting high-profile individuals like CEOs
C. A type of firewall
D. A physical attack
Discuss
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Correct Answer: Option B

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. Using unsecured networks
C. Disabling all security software
D. Installing and updating antivirus software
Discuss
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Correct Answer: Option D

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 handle customer complaints
B. To provide real-time analysis of security alerts
C. To install software
D. To manage employee schedules
Discuss
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Correct Answer: Option B

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. Dictionary attack
B. Denial-of-service
C. Man-in-the-middle
D. Phishing
Discuss
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Correct Answer: Option A

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 increase internet speed
B. To protect devices from external threats
C. To manage user accounts
D. To provide Wi-Fi connectivity
Discuss
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Correct Answer: Option B

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. Open access for all
B. Disabled firewalls
C. Use of default passwords
D. Segmentation of network
Discuss
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Correct Answer: Option D

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 educate employees about cybersecurity best practices
B. To increase company sales
C. To manage employee attendance
D. To develop new products
Discuss
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Correct Answer: Option A

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. Ransomware
B. Worm
C. Adware
D. Spyware
Discuss
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Correct Answer: Option D

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 delete data
B. To protect data stored on devices from unauthorized access
C. To compress data
D. To increase data speed
Discuss
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Correct Answer: Option B

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. Flooding the target with network traffic
C. Encrypting files
D. Sending phishing emails
Discuss
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Correct Answer: Option B

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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