Network Security

Which of the following is a type of malware that encrypts a user’s data and demands payment to restore access?

• Virus

• Spyware

• Ransomware

• Worm

What is the purpose of a Distributed Denial of Service (DDoS) attack?

• To steal sensitive user data

• To prevent legitimate users from accessing a web server

• To install backdoors for future access

• To distribute malware to multiple systems

What is a botnet?

• A network of legitimate servers used for data transfer

• A group of compromised computers controlled by a third party

• A software program designed to detect malware

• A type of firewall used for network security

Which of the following is an example of a physical security measure?

• Anti-malware software

• Encryption

• Alarm systems

• Firewalls

What does a backdoor in software allow a hacker to do?

• Encrypt all the data on a system

• Access a system without the user’s authorization

• Prevent users from accessing legitimate websites

• Send malicious requests to a web server

Which physical security method allows monitoring of unauthorized access attempts?

• Lock requiring a key

• Barrier

• CCTV

• Biometric systems

Which of the following best describes the method used by crackers to gain unauthorized access to a system?

• Using a brute force approach to guess passwords

• Installing spyware to monitor user activities

• Infecting a computer with a virus

• Encrypting files to demand ransom

What is a key disadvantage of using security guards for data protection?

• They are unable to monitor access

• They are prone to technical failures

• They cannot provide real-time alerts

• High cost of hiring and maintenance

Which software-based method allows traffic to be monitored and malicious traffic to be rejected?

• Firewall

• Anti-malware software

• Encryption

• Biometric authentication

What is the main risk of using illegitimate software downloads?

• The software may not work as expected

• It may have a built-in backdoor for hackers

• It can be difficult to install on all systems

• It may not be compatible with antivirus programs