This document contains 3 worksheets on the topics of computer networks, internet applications, and the history of computers. The worksheets include multiple choice questions, fill-in-the-blank questions, and short answer questions assessing the key concepts around these topics for an 8th standard student.

1. JNYAN VIKAS SCHOOL
Computers- Worksheet 1
2014-2015
Lesson: Computer Networks
Name: Std: VIII
Roll No: Date:
Q1. Fill in the Blanks:
1. A network that covers two or more Local Area Networks are called __________________
2. NIC is an acronym for _________________________________________
3. Individual machines in a network are called ______________________
4. A PC which is not connected to any other computer is called ______________________
Q2. Answer the following.
1. Define Computer networks
2. Define Topology
3. Explain the Star Topology
4. Draw a labeled diagram representing the Star, Bus and Tree topology

2. 5. The two main strategies for connecting computers are:
 Client/Server
 Peer-to-Peer
Briefly describe each strategy with diagrams.
6. What is the difference between LAN and WAN. Give examples of each.
7. Write a short note on the Advantages of Networking.

3. JNYAN VIKAS SCHOOL
Computers- Worksheet 2
2014-2015
Lesson: Internet Applications
Name: Std: VIII
Roll No: Date:
Q1. Fill in the Blanks
1. Write the full forms of
a. URL ________________________________________________________________
b. RSS _________________________________________________________________
2. Examples of Search Engine are ________________________________________ and
________________________________
3. Buying and selling of Goods and services on the internet is referred to as __________________________
4. The __________________________________________________ was established to focus on removal
of illegal material from the internet.
Q2. Match the following
1. Freeware a. A software which can be
downloaded for free but after
sometime you will have to pay
to use the software
2. Shareware b. A software that can be
downloaded for free and used by
anybody
3. Trialware c. A new software that needs to be
tested.
4. Open source software d. Software in which the source
code is available for public to
use and modify.
5. Betaware e. A software which can be
downloaded for trial purpose.

4. Q3. Differentiate between the following
a. chatting and Videoconferencing
b. Hacker and Cracker.
Q4. Write a short note on the following
1. Virus
2. E-mail

5. JNYAN VIKAS SCHOOL
Computers- Worksheet 3
2014-2015
Lesson: History of Computers
Name: Std: VIII
Roll No: Date:
Q1. Name the following
1. The first counting device _________________________________________
2. The first mechanical calculating device _________________________________________
3. The first electro-mechanical computer _________________________________________
4. The world’s first successful electronic Computer _________________________________________
5. John Napier invented _________________________________________
Q2. Name the computer generation which used these technologies:
1. Vacuum tubes for circuitry
2. Integrated circuits were used
3. Transistors were used
4. Artifical Intelligence.
5. Very large scale integrated circuits.
Q3. What is the full form of
1. Describe the Fifth Generation of Computers
2. Why is Charles Babbage known as the Father of Computers?