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Chapter 3 of 8
Revision Notes

Computer Virus

ICSE · Class 7 · Computer Studies

Quick revision notes for Computer Virus — ICSE Class 7 Computer Studies. Key concepts, formulas, and definitions for last-minute revision.

45 questions30 flashcards5 concepts

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Key Topics to Revise

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1. Malware and Computer Virus

  • Malware refers to software intentionally created to cause harm to a user, computer system, or network.
  • The word Malware is composed of Malicious and software.
  • A computer virus is a malicious program with the ability to execute and replicate itself.
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2. Sources and Symptoms of Virus Attack

  • A virus can enter through infected storage media such as CD, DVD, and pen drive.
  • Pirated software can carry viruses.
  • Hired computer games or audio or video CDs can also be sources of viruses.
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3. Types of Viruses

  • Viruses are classified into four categories: Boot sector virus, Program virus, Macro virus, and Stealth virus.
  • Boot sector virus affects the Boot Sector or Master Boot Record of the hard disk during booting.
  • Boot sector virus can halt the system and may stop the operating system from loading.
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4. Other Malware

  • Worm is a self-sufficient computer program that copies and multiplies itself using computer networks and security flaws.
  • Worm does not need another program or user to spread.
  • Worm does not affect the functioning of a system but interrupts services and drastically decreases available memory.

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Full Notes

Key Concepts

Malware means malicious softwareA computer virus is a maliciousVIRUS stands for Vital Information ResourcesA virus can enter through infectedCommon signs include slow processor speed

Frequently Asked Questions

What are the important topics in Computer Virus for ICSE Class 7 Computer Studies?
Key topics in Computer Virus include Computer Virus: Complete Topic Overview, Mind map showing the definition, effects, and types of malware, Flowchart showing how a virus infects and spreads through a computer system. These are the concepts ICSE Class 7 examiners draw on most — study them first, then practise related questions.
How to score full marks in Computer Virus — ICSE Class 7 Computer Studies?
Understand the core concepts first, then work through the 45 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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