Understanding Computer Threats and Security

What is an example of an internal computer threat?

• Phishing email

• Malware from a USB drive

• Unauthorised access by an employee

• Distributed Denial of Service (DDoS) attack

Which of the following is considered an external computer threat?

• A disgruntled employee deleting files

• A virus introduced by a downloaded file

• A power failure

• A software bug

What is the primary purpose of a firewall in computer security?

• To store data securely

• To block unauthorised access to a network

• To speed up internet connection

• To manage user passwords

Which of the following is a common method used by hackers to gain access to a computer system?

• Social engineering

• Data encryption

• Software updates

• Cloud storage

What is a key characteristic of a Trojan horse in computer security?

• It replicates itself to spread to other computers

• It disguises itself as legitimate software

• It encrypts files and demands a ransom

• It monitors user activity without their knowledge

Which of the following is a preventive measure against internal threats?

• Installing antivirus software

• Conducting regular employee training

• Using a Virtual Private Network (VPN)

• Implementing a strong password policy

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

• To steal sensitive data

• To make a network resource unavailable

• To install spyware on a system

• To gain administrative access

Which of the following is an example of a physical security measure to protect computer systems?

• Biometric authentication

• Two-factor authentication

• Data encryption

• Regular software updates

What is the role of encryption in protecting data?

• To compress data for faster transmission

• To convert data into a secure format

• To back up data to the cloud

• To delete unnecessary files

Which of the following is a sign that a computer might be infected with malware?

• Faster processing speed

• Frequent pop-up ads

• Increased battery life

• Improved internet connectivity