What are the three core principles of information security?

• Authentication, Encryption, Firewall

• Confidentiality, Integrity, Availability

• Passwords, Firewalls, Antivirus

• Data, Software, Hardware

Which of the following is NOT a best practice for securing an operating system?

• Keeping the OS updated

• Using weak passwords

• Enabling firewalls

• Disabling unused services

What is the primary purpose of a firewall?

• To increase internet speed

• To block unauthorized access

• To store backup data

• To encrypt files

What type of attack aims to trick a user into revealing sensitive information?

• Phishing

• DDoS

• Malware injection

• SQL Injection

What security measure is used to protect data from unauthorized access while stored or transmitted?

• Firewall

• Encryption

• Antivirus

• Backup

What is the most secure method for authentication?

• Single password authentication

• Multi-factor authentication (MFA)

• Username-based access

• No authentication needed

Which of the following operating systems is considered more vulnerable to attacks?

• Linux

• macOS

• Windows

• Unix

What is the role of User Access Control (UAC) in Windows security?

• Prevents all malware infections

• Blocks unauthorized changes to the system

• Increases internet speed

• Disables firewalls

What type of malware locks a user's files and demands payment?

• Spyware

• Ransomware

• Worm

• Trojan

Which of the following is NOT a sign of a malware infection?

• Slow system performance

• Frequent pop-ups

• Faster internet speeds

• Unusual hard drive activity