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B. Fill in the blanks with the correct answer.

1. In _________ topology, each node is connected to every other node in the network.

2. A _________ is capable of transmitting data packets to the destination computer through
multiple paths.

3. _________ are omnidirectional and can penetrate buildings easily.

4. A _________ converts digital signals into analog signals and vice versa.

C. Write ‘T’ for True and ‘F’ for False statement.

1. The central device in a star topology is called a hub. _______
2. Optical fibre cable provides the fastest speeds of data transmission among all wired
transmission media. _______

3. Cable television network is an example of a LAN. _______
4. A single satellite can receive and transmit data from a number of earth stations. _______

D. Answer the following questions.
1. What do you mean by computer networks? State any four advantages of computer networking.

2. Describe the types of computer networks based on the geographical area covered by them.
3. What is a topology? Explain any three topologies used in computer networks.

4. What are network devices? State the use of the following networking devices:

(a) Modem (b) Switch (c) NIC
5. State some limitations of computer networks.

Mind Stretching
1. A school wants to set up a computer network between the three computer labs in the school
building. Which type of network topology, transmission media, and network device should be
used for the purpose? Logical Thinking
2. Shalu wants to transfer some photographs from her smartphone to her mother’s smartphone.
Name the transmission media that she should use for the task. Critical Thinking

Discuss Communication Skills

Can the Internet replace all computer networks of the world? Discuss with your classmates.

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