Class 7

Chapter 9 Computer Virus Short answers :- Q1. Write a short note on ‘Worms’. Ans. A worm is a program very similar to a virus , it has ability to self – replicate and can lead to negative effects on our system . It can be detected and eliminated by any antivirus software . Q2.Write any two points to prevent your Computer from Virus . Ans.1. Install a good antivirus software .             2. Be careful while downloading files from the internet . Q3. What is an Antivirus Program ? Ans. Antivirus is a security program which we install on our computer to protect it from getting infected by malware . Q4. What do you mean by the term ‘Malware ‘. The term “Malware” is a catch – all phrase for any type of malicious software , such as viruses , worms, Trojans and Spyware . Long Answer Type Questions :- Q1. What is VIRUS ? How it may harm our computer ? Ans. VIRUS stands for Vital Information Resources Under Sieg...

Chapter 10 Internet Short Answer Type questions :- Q1. Write the use of internet in the field of education . Ans. Internet provides us number of books , reference books , online help centre ,expert’s views and other study materials that has made the learning process easy. There are lot of websites from where we can gain a lot of knowledge . Q2. Write a short note on ‘Picasa web albums ‘. Ans . The Picasa web Albums is Google’s photo sharing site ,where we can upload photos. A free picasa account gives us 1 GB of storage space. Q3.What is Social Networking? Ans. It is a service on the internet that enables us to connect with people who share the interests Q4. What do you know about ‘Entertainment on web ‘? Ans. The internet provides us many sources of entertainment . we can download music ,tune into Internet – based radio stations .we can see the photos of people sharing on the internet , videos ,watch movies on YouTube etc . Q5.What do you know about WhatsApp ? ...