Computer science(python)

Computer
Science(python)
Class : XII
Tutorial on How to solve the case study Question Of
networking

TIPS TO SOLVE THESE QUESTIONS
Where Server should be placed:
Server should be placed in the building where the number of computer is
maximum
Where Hub/Switch should be placed:
In each building where the computers are more then one
Where Repeater should be placed:
It is used when the distance between the buildings are greater than 70m;
It regenerates data and voice signals
online face-to-face communication:
Video Conferencing

Where modem should be placed:
In server room
Where Firewall should be placed:
In server room
To protect and control the internet uses within the campus:
firewall or Router
A firewall is a network security device that monitors incoming and
outgoing network traffic and permits or blocks data
TIPS TO SOLVE THESE
QUESTIONS

Device and the protocol that shall be needed to provide wireless Internet
access to all smartphone/laptop:
Device: WiFi card
Protocol: TCP/IP
TIPS TO SOLVE THESE QUESTIONS
Device and the protocol that shall be needed to provide wireless Internet
access to all smartphone/laptop users in the campus :
Device Name: WiFi Router OR WiMax OR RF(radio frequency) Router OR
Wireless Modem
Protocol : WAP OR 802.16 OR TCP/IP OR VOIP OR MACP OR 802.11
Wireless Application Protocol (WAP) is a technical standard for
accessing information over a mobile wireless network.
802.16 is a group of broadband wireless communications standards for
metropolitan area networks (MANs)

Cables used to connect whose cost is economical:
Coaxial cable, Twisted Pair, Ethernet Cable
Cables used to connect for large distance and high quality and costly:
Fibre optic cable
To connect hill region:
radiowaves
To connect city-to-city,state-to-state:
satellite
TIPS TO SOLVE THESE
QUESTIONS

Block
A
Block
B
Block
C
Block
D
Distance between the blocks
Block A to Block B 60m
Block B to Block C 40m
Block C to Block A 30m
Block D to Block C 150m

Block
A
Block
B
Block
C
Block
D
(i) Suggest the most suitable place (i.e. block) to house the server of this
company with a suitable reason.

Block
A
Block
B
Block
C
Block
D
(i) Suggest the most suitable place (i.e. block) to house the server of this
company with a suitable reason.
Ans: Block C

Block
A
Block
B
Block
C
Block
D
(ii) Suggest the suitable layout to connect all the blocks with suitable reason.

Block
A
Block
B
Block
C
Block
D
(ii) Suggest the suitable layout to connect all the blocks with suitable
reason
60m
30m
150m

Block
A
Block
B
Block
C
Block
D
(ii) Suggest the suitable layout to connect all the blocks with suitable
reason
30m
150m
Ans: star topology
Layout:

Block
A
Block
B
Block
C
Block
D
(iii) Suggest the placement of the following device with justification:
(a)Repeater (b) Hub/Switch
Layout:

Block
A
Block
B
Block
C
Block
D
(a)Repeater
Layout:
Repeater
30m
150m

Block
A
Block
B
Block
C
Block
D
(b) Hub/Switch
Layout:
HUB
HUB
HUB
HUB

Block
A
Block
B
Block
C
Block
D
(iii) Suggest type of network to connect all the blocks with suitable
reason.
Layout:
Ans: LAN(local area network)

iv) Suggest the most suitable wired medium for efficiently connecting each
computer installed in every block out of the following network cables:
● Coaxial Cable
● Ethernet Cable
● Single Pair Telephone Cable.
Ans:Ethernet Cable
(iv) Suggest the technology out of the following for setting-up very fast Internet
connectivity among buildings of the university
1. Optical Fibre
2. Coaxial cable
3. Ethernet Cable
Ans:Optical Fibre
(iv)The organization is planning to link its sale counter situated in various part of the
same city/ which type of network out of LAN,WAN, MAN will be formed? Justify.
Ans:MAN
An Ethernet cable is the most common type of network cable used on a wired network
whether at home or in any other business establishment. This cable connects wired
devices together to the local network for file sharing and Internet access.

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