Viruses

Computer Science Master

Question 1. What is a computer virus?

□ A. A hardware device that protects computers

□ B. A self-replicating program that attaches to legitimate files

□ C. A type of software that speeds up computer performance

□ D. A program that updates operating systems automatically

Question 2. Which of the following actions is NOT a common effect of a virus on a computer?

□ A. Corrupting files

□ B. Deleting files

□ C. Improving internet speed

□ D. Slowing down the computer

Question 3. Why is it important to keep antivirus software regularly updated?

□ A. To improve the computer’s hardware

□ B. To remove outdated user files automatically

□ C. To detect and remove new virus threats

□ D. To speed up the computer's startup time

Question 4. Which practice helps minimize vulnerabilities that viruses may exploit?

□ A. Ignoring software updates

□ B. Keeping the operating system updated

□ C. Continuously downloading from unknown websites

□ D. Opening all email attachments without caution

Question 5. What is a safe practice regarding email attachments to avoid virus infections?

□ A. Opening all emails immediately to stay informed

□ B. Only opening attachments from unknown senders

□ C. Scanning attachments with antivirus software before opening

□ D. Downloading attachments from suspicious emails

Question 6. Fill in the blank(s)

Viruses are ________________________ programs that attach to legitimate files or software.

Question 7. Fill in the blank(s)

A virus requires a __________________ or file to infect and spread.

Question 8. Fill in the blank(s)

Keeping your ________________________ and software up to date helps minimize vulnerabilities.

Question 9. Fill in the blank(s)

Downloading files only from ______________________ reduces the risk of virus infection.

Question 10. Fill in the blank(s)

Performing regular __________ allows recovery of important data after a virus infection.

Question 11. What does a computer virus need to spread on a system?

Question 12. Name two harmful actions a virus can perform once activated.

Question 13. Why should users be cautious when opening email attachments?

Question 14. How does antivirus software protect a computer from viruses?

Question 15. Why is user education important in defending against viruses?

Question 16. Explain how viruses spread and why they require a host program or file.

Question 17. Describe the various methods recommended to defend a computer against viruses and explain why each is important.

Question 18. Discuss the potential consequences of a virus infection on a user’s computer.

Viruses

Answer Sheet

Question 1. What is a computer virus?

A. A hardware device that protects computers

□ B. A self-replicating program that attaches to legitimate files

C. A type of software that speeds up computer performance

D. A program that updates operating systems automatically

Question 2. Which of the following actions is NOT a common effect of a virus on a computer?

A. Corrupting files

B. Deleting files

□ C. Improving internet speed

D. Slowing down the computer

Question 3. Why is it important to keep antivirus software regularly updated?

A. To improve the computer’s hardware

B. To remove outdated user files automatically

□ C. To detect and remove new virus threats

D. To speed up the computer's startup time

Question 4. Which practice helps minimize vulnerabilities that viruses may exploit?

A. Ignoring software updates

□ B. Keeping the operating system updated

C. Continuously downloading from unknown websites

D. Opening all email attachments without caution

Question 5. What is a safe practice regarding email attachments to avoid virus infections?

A. Opening all emails immediately to stay informed

B. Only opening attachments from unknown senders

□ C. Scanning attachments with antivirus software before opening

D. Downloading attachments from suspicious emails

Question 6. Fill in the blank(s)

Viruses are [[self-replicating]] programs that attach to legitimate files or software.

Question 7. Fill in the blank(s)

A virus requires a [[host program]] or file to infect and spread.

Question 8. Fill in the blank(s)

Keeping your [[operating system]] and software up to date helps minimize vulnerabilities.

Question 9. Fill in the blank(s)

Downloading files only from [[trusted sources]] reduces the risk of virus infection.

Question 10. Fill in the blank(s)

Performing regular [[backups]] allows recovery of important data after a virus infection.

Question 11. What does a computer virus need to spread on a system?

It needs a host program or file that users execute or open.

Question 12. Name two harmful actions a virus can perform once activated.

Corrupting or deleting files and slowing down the computer.

Question 13. Why should users be cautious when opening email attachments?

Because attachments can contain viruses, especially if they come from unknown or unexpected sources.

Question 14. How does antivirus software protect a computer from viruses?

It detects and removes viruses and is regularly updated to identify new threats.

Question 15. Why is user education important in defending against viruses?

Educated users are less likely to download unsafe files or open suspicious attachments, reducing infection risks.

Question 16. Explain how viruses spread and why they require a host program or file.

Question 17. Describe the various methods recommended to defend a computer against viruses and explain why each is important.

Question 18. Discuss the potential consequences of a virus infection on a user’s computer.