Unit 3 - 2.4.4 - Viruses, Worms, Spyware & Adware

What are viruses and worms?

• Types of harmless software used for system maintenance.

• Types of malware characterized by their ability to self-replicate.

• Security measures implemented by antivirus software.

• Operating system features designed to prevent unauthorized access.

What distinguishes viruses from worms?

• Viruses require user interaction to spread, while worms can spread independently.

• Viruses attach themselves to system processes, files, or programs, while worms do not.

• Viruses only affect local networks, while worms can spread across wide area networks.

• Viruses are always harmful, while worms can sometimes be benign.

What is a characteristic of worms in terms of self-replication?

• They require user interaction to spread.

• They do not need to rely on programs to spread.

• They can only spread within a local network.

• They can only replicate by infecting other worms.

How can viruses and worms affect a target?

• By infecting specific programs on a computer.

• By encrypting sensitive data on a local network.

• By spreading to the boot sector of the computer.

• All of the above.

What is a recommended defense against viruses?

• Implementing least privilege and monitoring file modifications.

• Utilizing intrusion detection and prevention systems.

• Restricting the level of privilege users and processes natively run in.

• All of the above.

What is a common defense measure against both viruses and worms?

• Regularly updating antivirus software.

• Disabling system processes to prevent malware attachment.

• Encrypting all files on the computer to prevent unauthorized access.

• Ignoring system alerts and error messages.

What is adware?

• Software that monitors computer and internet usage.

• Software that comes pre-installed on a device by the manufacturer.

• Software that installs extra components to deliver additional advertising, often in the form of pop-up ads.

• Software that consumes system resources and takes up storage space.

How does adware affect computer performance?

• It speeds up computer performance by optimizing system resources.

• It slows down computer performance by increasing network traffic.

• It has no impact on computer performance.

• It improves system functions by providing additional features.

What is a common method of distributing adware?

• Pre-installing it on devices by manufacturers.

• Bundling it with free software downloads.

• Selling it as a standalone product.

• Sending it through email attachments.

How is spyware different from adware?

• Spyware is used for advertising purposes.

• Spyware monitors and collects user information without consent.

• Spyware is pre-installed by manufacturers.

• Spyware speeds up computer performance.