Understanding Computer Viruses

What is a computer virus?

• A computer virus is a malicious program that replicates itself and spreads to other computers.

• A computer virus is a type of hardware that enhances computer performance.

• A computer virus is a program that helps in data recovery.

• A computer virus is a software that protects against malware.

Name one type of computer virus.

• Adware

• Spyware

• Trojan horse

• Worm

How can a computer virus spread through email?

• A computer virus can spread through email by changing the subject line.

• A computer virus can spread through email by using encryption to hide its presence.

• A computer virus can spread through email by sending spam messages.

• A computer virus can spread through email by attaching itself to messages and executing when opened.

What is a worm in the context of computer viruses?

• A worm is a type of antivirus software.

• A worm is a hardware component of a computer.

• A worm is a user-installed application that enhances performance.

• A worm is a self-replicating malware that spreads across networks.

What effect can a virus have on your computer's performance?

• A virus can only affect the appearance of the desktop without impacting performance.

• A virus can improve computer performance by optimizing resource usage.

• A virus has no effect on computer performance whatsoever.

• A virus can significantly degrade computer performance by consuming resources and causing system instability.

How can downloading software from untrusted sources lead to viruses?

• All software from the internet is free of viruses.

• Viruses can only be transmitted through email attachments.

• Downloading software from untrusted sources can lead to viruses due to the inclusion of malicious code in the software.

• Downloading software from trusted sources is always safe.

What is a Trojan horse virus?

• A Trojan horse virus is a type of antivirus software.

• A Trojan horse virus is malware that pretends to be a legitimate application to deceive users.

• A Trojan horse virus is a hardware device that protects against malware.

• A Trojan horse virus is a legitimate application that enhances system performance.

What are some signs that your computer may have a virus?

• Increased battery life

• Signs of a virus include slow performance, frequent crashes, unexpected pop-ups, disabled antivirus software, and unknown programs.

• Faster internet speed

• More storage space

How can antivirus software help prevent viruses?

• Antivirus software only protects against phishing attacks.

• Antivirus software speeds up computer performance.

• Antivirus software prevents viruses by detecting, blocking, and removing malware.

• Antivirus software is used to enhance internet browsing speed.

What is the importance of keeping your software updated?

• It helps in reducing the size of the software.

• It ensures that the software runs on outdated hardware.

• It allows for the installation of unnecessary features.

• Keeping your software updated is important for security, performance, and compatibility.