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3. Virus can infect files on CD-ROMs and DVD-ROMs. _______

4. A spyware exists as an independent executable program. _______
5. Computer worms affect the speed of a computer as well as the bandwidth

available on a computer network. _______
D. Answer the following questions.
1. What is malware? Write any five measures you should follow to protect your computer from
malware.

2. What is a computer virus? Write in brief about the different types of viruses.
3. What is a Trojan Horse?

4. Define the following terms:
(a) Spam (b) Phishing (c) Adware (d) Hacking (e) Identity theft

5. What is an Antivirus software? Why do you need to update virus definition for an antivirus
software?
6. Write five ways in which malware affects your computer.

Mind Stretching
1. Shriya noticed files with strange names appearing in her computer though she did not create
those files. What could be wrong with her computer? Logical Thinking

2. Vikram has installed an antivirus software in his computer and scans his computer regularly for
viruses. Still, his computer got infected with a virus. What could be the cause for the virus infection?
How can he avoid the same problem in future? Logical Thinking
3. Give two examples of each: Critical Thinking

(a) Antivirus software __________________ __________________
(b) Spyware __________________ __________________

(c) Adware __________________ __________________
(d) Stealth virus __________________ __________________
(e) Computer worms __________________ __________________

DISCUSS
DISCUSS Communication Skills
Can antivirus software protect the computer from all kinds of malware? Discuss with your classmates.

TEACHER’S DESK
TEACHER’S DESK
Explain to the students the various ways by which hackers attack a computer and how such attacks can be
prevented.

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