Std VII | II Semester Revision | Lesson 6 & Lesson 7
Std VII Computer – Lesson 6 & 7 II Semester Revision Work Sheet Std VII Lesson 6 & Lesson 7 – All Questions & Answers Lesson 6: Computer Viruses Lesson 7: Computer Network Lesson No. 6 – Computer Viruses A) Answer the Following Q1. What is a computer virus? Ans:- A computer virus is a harmful program that enters a computer without permission and damages data or system files. Q2. What is a Trojan virus? Ans:- A Trojan virus is a malicious program that looks like useful software but secretly harms the computer. Q3. What is spyware? Ans:- Spyware is a program that secretly collects personal information like passwords and browsing details. Q4. What is a worm? Ans:- A worm is a virus that spreads automatically from one computer to another through networks. Q5. State any two symptoms of a computer virus. Ans:- Computer becomes slow; Files get deleted automatically. Q6. How does a virus ente...