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 8 of 14
Question #141
What is the difference between a virus and a worm?
A. A virus is always more harmful than a worm
B. There is no difference
C. A worm requires user action to spread, while a virus does not
D. A virus requires a host program to spread, while a worm is self-contained
Discuss
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Correct Answer: Option D

Explanation:
A virus attaches itself to a host program or file to replicate, while a worm is a standalone program that replicates and spreads on its own.
This question belongs to: Computer Cyber Security
Question #142
What is 'social engineering' in cybersecurity?
A. The use of technical hacking tools
B. A type of firewall
C. The psychological manipulation of people to divulge confidential information
D. The process of encrypting data
Discuss
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Correct Answer: Option C

Explanation:
Social engineering is a manipulation technique that exploits human error to gain access to private information or systems.
This question belongs to: Computer Cyber Security
Question #143
Which of the following is a characteristic of a strong password?
A. Is a common word like 'password'
B. Contains only lowercase letters
C. Is shorter than 8 characters
D. Includes a combination of uppercase, lowercase, numbers, and special characters
Discuss
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Correct Answer: Option D

Explanation:
A strong password includes a mix of uppercase and lowercase letters, numbers, and special characters to increase complexity and resistance to brute-force attacks.
This question belongs to: Computer Cyber Security
Question #144
What does 'ethical hacking' refer to?
A. Hacking for financial gain
B. Hacking to cause damage to systems
C. Hacking without any permission
D. Hacking performed with the permission of the system owner to identify vulnerabilities
Discuss
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Correct Answer: Option D

Explanation:
Ethical hacking is authorized hacking conducted to identify and fix security weaknesses in a system, with the goal of strengthening security.
This question belongs to: Computer Cyber Security
Question #145
Which of the following is a type of DoS (Denial-of-Service) attack?
A. Flooding a network with traffic to make it unavailable
B. Installing a Trojan
C. Phishing
D. SQL injection
Discuss
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Correct Answer: Option A

Explanation:
A Denial-of-Service (DoS) attack aims to make a service or network unavailable by overwhelming it with a flood of traffic.
This question belongs to: Computer Cyber Security
Question #146
What is the purpose of a VPN (Virtual Private Network)?
A. To increase internet speed
B. To detect viruses
C. To block all incoming traffic
D. To create a secure, encrypted connection over a less secure network
Discuss
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Correct Answer: Option D

Explanation:
A VPN extends a private network across a public network, allowing users to send and receive data as if they were directly connected to the private network, with encryption for security.
This question belongs to: Computer Cyber Security
Question #147
Which type of malware is designed to secretly observe a user's activities without their knowledge?
A. Worm
B. Ransomware
C. Spyware
D. Virus
Discuss
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Correct Answer: Option C

Explanation:
Spyware is a type of malware that covertly gathers information about a user's activities, such as keystrokes or browsing habits, without their consent.
This question belongs to: Computer Cyber Security
Question #148
What is the role of a digital signature in cybersecurity?
A. To encrypt a message
B. To provide authentication and integrity of a digital message
C. To compress a file
D. To speed up data transmission
Discuss
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Correct Answer: Option B

Explanation:
A digital signature is a mathematical scheme for verifying the authenticity and integrity of a digital message or document, ensuring it has not been altered.
This question belongs to: Computer Cyber Security
Question #149
Which of the following is an example of a physical security measure in cybersecurity?
A. Using biometric access controls to a data center
B. Implementing a firewall
C. Using encryption
D. Installing antivirus software
Discuss
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Correct Answer: Option A

Explanation:
Biometric access controls, such as fingerprint or iris scanners, are physical security measures that restrict physical access to sensitive areas like data centers.
This question belongs to: Computer Cyber Security
Question #150
What is 'zero-day vulnerability'?
A. A software vulnerability that is unknown to the vendor and has no patch
B. A vulnerability that has been known for a long time
C. A vulnerability that only affects older systems
D. A vulnerability that is easy to fix
Discuss
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Correct Answer: Option A

Explanation:
A zero-day vulnerability is a flaw in software that is unknown to the vendor, meaning there is no official patch available at the time it is discovered.
This question belongs to: Computer Cyber Security
Question #151
What is the primary goal of cybersecurity?
A. To protect systems, networks, and data from digital attacks
B. To monitor all user activities
C. To increase system complexity
D. To make systems completely impenetrable
Discuss
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Correct Answer: Option A

Explanation:
The primary goal of cybersecurity is to protect information and systems from unauthorized access, damage, or attack, ensuring the confidentiality, integrity, and availability of data.
This question belongs to: Computer Cyber Security
Question #152
Which of the following is a form of identity theft?
A. Sending spam emails
B. Using a firewall
C. Installing a virus
D. Using a stolen credit card to make purchases
Discuss
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Correct Answer: Option D

Explanation:
Identity theft involves using someone else's personal information, such as a credit card number, without their permission to commit fraud.
This question belongs to: Computer Cyber Security
Question #153
What does 'HTTPS' stand for in a URL?
A. Hypertext Transfer Protocol Secure
B. Hypertext Transmission Protocol Secure
C. High Transfer Protocol Secure
D. Hypertext Transfer Protocol Standard
Discuss
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Correct Answer: Option A

Explanation:
HTTPS stands for Hypertext Transfer Protocol Secure, which is the secure version of HTTP, encrypting data between the browser and the website.
This question belongs to: Computer Cyber Security
Question #154
Which of the following is a type of malware that displays unwanted advertisements?
A. Trojan
B. Adware
C. Ransomware
D. Spyware
Discuss
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Correct Answer: Option B

Explanation:
Adware is a type of malware that automatically displays or downloads unwanted advertisements, often without the user's consent.
This question belongs to: Computer Cyber Security
Question #155
What is the purpose of a CAPTCHA on a website?
A. To distinguish between human users and automated bots
B. To encrypt user data
C. To display advertisements
D. To speed up page loading
Discuss
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Correct Answer: Option A

Explanation:
CAPTCHA is a test used to determine whether a user is human, helping to prevent automated bots from performing malicious actions like spamming or brute-force attacks.
This question belongs to: Computer Cyber Security
Question #156
Which of the following is a common method to secure a Wi-Fi network?
A. Using an open network
B. Sharing the password publicly
C. Disabling encryption
D. Disabling SSID broadcast
Discuss
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Correct Answer: Option D

Explanation:
Disabling SSID broadcast is a security measure that hides the network name, making it less visible to casual attackers.
This question belongs to: Computer Cyber Security
Question #157
What is 'SQL injection'?
A. A technique to insert malicious SQL code into a query to manipulate a database
B. A method to inject a virus into a system
C. A physical attack on a server
D. A type of social engineering
Discuss
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Correct Answer: Option A

Explanation:
SQL injection is a code injection technique that exploits vulnerabilities in an application's database layer, allowing attackers to execute malicious SQL statements.
This question belongs to: Computer Cyber Security
Question #158
Which of the following is a characteristic of a Trojan Horse?
A. It is always harmless
B. It replicates itself without user intervention
C. It disguises itself as a legitimate program
D. It encrypts files for ransom
Discuss
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Correct Answer: Option C

Explanation:
A Trojan Horse is a type of malware that appears to be a legitimate program but contains malicious code, tricking users into installing it.
This question belongs to: Computer Cyber Security
Question #159
What is 'biometric authentication'?
A. Using a password to log in
B. Using a one-time password
C. Using physical characteristics like fingerprints or facial recognition for identity verification
D. Using a security token
Discuss
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Correct Answer: Option C

Explanation:
Biometric authentication uses unique physical characteristics, such as fingerprints, iris patterns, or facial features, to verify a user's identity.
This question belongs to: Computer Cyber Security
Question #160
Which of the following is a type of cyber attack that targets a specific individual or organization with personalized phishing?
A. Whaling
B. Smishing
C. Vishing
D. Spear phishing
Discuss
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Correct Answer: Option D

Explanation:
Spear phishing is a targeted phishing attack directed at a specific individual or organization, often with personalized information to increase credibility.
This question belongs to: Computer Cyber Security

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