Page 220 - PYTHON-12

An educational society (say XYZ Educational
Computer Lab 1 Computer Lab 2 Computer Lab 3
Society), with its head office in Chennai (Tamil
Nadu) and schools in various parts of the
Administrative Principal’s Accounts
globe, is setting up a new senior secondary Block Office Office
school, ‘SF School’, in Bahadurgarh (Haryana).
The ‘SF School’ will have 3 computer labs with 30 computers in each lab, one Accounts office with
three computers, one Administrative block with five computers, and a Principal’s office with one
computer.
Let us see how a computer network can be set up in the school. First of all, we can draw a rough
sketch of the school with computers at various locations as follows:

1. Independent LANs can be set up in each of the following buildings: Computer Lab1, Computer
Lab2, Computer Lab3, Administrative Block, and Accounts Office.

2. These LANs can be set up in STAR topology using UTP cable (economical, reliable and easily
available).
3. For this, one switch (with suitable number of ports) will be required in each of these buildings.
More than one switch can be used in computer labs if a switch with more than 30 ports is not
available.
4. Two internet connections (broadband for high speed) can be procured in Administrative Office.

Two connections should be procured from two different ISPs so that:
(a) Internet connection in Administrative office can be kept separate from the other Computer
labs where students may do a lot of experimentation.

(b) If one internet connection is not working, the other can be used in case of urgent
requirements.
5. These buildings can then be connected as follows:

Computer Lab 1 Computer Lab 2 Computer Lab 3

Administrative Principal’s Accounts
Block Office Office

6. This interconnection will ensure that each building is directly connected to Administrative block.
7. This way, internet connection will be available in each building irrespective of the status of the
other building.

8. Server (if any) of the school may be placed in the Administrative block so that it remains safe
Computer Science with Python–XII 8.66 Tips to solve technical questions based on Networking
(physically) and a firewall can be set up so that the whole network remains safe from any kind
of virus or intrusion attacks.

There is no need to put in any extra efforts or expenses to link the school to its head office. This
can be taken care of using the internet connections

Where Server should be placed: Server should be placed in the building where the number of
computers is maximum.
1. Suggest a suitable cable layout of connection: A suitable cable layout can be suggested in the
following two ways: