1.
What is a computer network? What are its advantages?
2.
What is meant be communication channels? Give two examples of guided media and two
examples of unguided media.
3.
Which communication channel(s) is/are suitable in each of the following situations?
a.
Setting up a LAN
b.
Transfer of data from a laptop to a mobile phone.
c.
Transfer of data from one mobile phone to another.
d.
Creating a remote control that can control multiple devices in a home.
e.
Very fast communication between two offices in two different countries.
f.
Communication in a hilly area
g.
Communication within a city and its vicinity where cost of cabling is too high.
4.
Why is a switch called an intelligent hub?
5.
When is a repeater used in a computer network?
6.
Diagrammatically show how you would connect 6 PCs, 1 server, 1 printer, and 2 scanners
in
a. Star topology b. Bus topology
7.
Two engineers in the same room have connected their Palm-tops using bluetooth
for working on a Group presentation. Out of the following, what kind of Network
have they formed? LAN, MAN, PAN, WAN
8.
What is a MAC address? What is the difference between a MAC address and an IP address?
9.
Give some examples of domain names and URLs. How is a domain name different from
a URL?
10.
What is domain name resolution?
11.
Define Network security? What kind of attacks can be made on data and computer networks?
12.
List some methods which are used for network security.
13.
Differentiate (with examples wherever possible) between :
a.
LAN and MAN b. MAN and
WAN
c.
Hub and Switch d. Guided
and Unguided media
14.
Write one advantage of star topology over bus topology and one advantage of bus
topology over star topology.
15.
Ishika Industries has set up its new production unit and sales office at
Ranchi. The company compound has 4 buildings as shown in the diagram below:
 |
| Buidling |
 |
| Distance |
 |
| No. of Computer |
1. Suggest a cable layout of connections
between the buildings so that each building is directly connected to
Administrative Office.
2.
Suggest the most suitable place (i.e. building) to house the server of this
production unit with a suitable reason.
3.
Suggest the placement of the following devices with justification:
(i)
Repeater (ii) Hub/Switch
4.
The Administrative office of this unit is to be linked with the head office
situated in
Patiala
(Punjab). What will be the most economical way to do this? Justify your answer.
