What is the primary purpose of a firewall in computer security?
To prevent physical damage to computers
To store encrypted data
To block unauthorized network traffic
To protect against viruses
Which of the following is the most common type of malware?
Rootkit
Trojan Horse
Worm
Virus
Which of the following is an example of two-factor authentication?
Using a single password
Using a security question and a password
Using a fingerprint and a password
Using a password and a username
What does the acronym 'VPN' stand for?
Virtual Private Network
Variable Private Network
Virtual Public Network
Virtual Protected Network
Which of the following protocols is most commonly used for secure communication over the internet?
SMTP
HTTPS
FTP
HTTP
What is the purpose of encryption in computer security?
To ensure data integrity
To block unauthorized access
To convert data into a secure format
To detect malware
Which of the following is an example of a social engineering attack?
Trojan Horse
SQL Injection
Phishing
Denial of Service (DoS) attack
What does the acronym 'DOS' stand for in a cybersecurity context?
Domain of Service
Data of Service
Denial of Secure
Denial of Service
Which of the following is the most common cause of data breaches?
Malware
Phishing
Lack of encryption
Poor password management
What does the term 'zero-day exploit' refer to?
A hardware-based attack
A type of phishing attack
An attack targeting a vulnerability for which there is no fix yet
An attack on a system that was previously considered secure
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