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3. The speed at which data transfer takes place over a network is _________.
4. In the case of fibre optic transmission, data transfers in the form of __________.
5. A local telephone network is an example of ___________ switching.
6. Fault detection and isolation is easy in case of ___________ topology.
7. _____________ is the number of bits trannmitted per second over a network.
8. _______________ of a channel denotes the frequencies that travel through it.
D. Answer the following questions:
1. Give full form of the following:
MAC, NIC, ARPANET, LAN, MAN, WAN
2. Name four types of networks.
3. Give two examples of MAN.
4. Define the following terms:
(i) Transmission medium
(ii) Topology
(iii) Communication channel
5. Differentiate between the followings:
(i) Star topology and Tree topology
(ii) Bus topology and Ring topology
(iii) LAN and PAN
(iv) MAN and WAN
(v) Hub and Switch
(vi) Modem and Router
(vii) Guided and unguided transmission media
6. Ramya wants to take the printout of a document that she has saved on her mobile phone. She connects her mobile phone
to her laptop using Bluetooth and connects her printer with the laptop using a wired medium. Which network PAN/ LAN/
WAN/ MAN) is she using?
7. Ramachandran wants to upload a text document at the rate of 12 pages/15 seconds. What should be the minimum
required data rate of the channel? (Assume one page contains 600 characters and each character is equal to 8 bits)
8. What are the different ways in which the devices may be connected in a LAN?
9. Give an example of wired PAN.
10. Give two characteristics of a hub.
11. What is a modem? Categorise a modem on the basis of its placement.
12. Write a short note on modems.
13. Which device should be used to provide wireless Internet access to all smartphone/laptop users in a campus?
14. Differentiate between sender and receiver.
15. What is the use of MAC address?
Assertion Reasoning Based Questions
The following questions are Assertion(A) and Reasoning(R) based questions. Mark the correct choice as
a. Both A and R are true and R is the correct explanation of A
b. Both A and R are true and R is not the correct explanation of A
c. A is true but R is false
d. A is false but R is true
Computer Networks 243

