network and types with disadvantages & advantages

1. NET WORKS &
TYPES:
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n.

2. WHAT IS MEANT BY NETWORK?
∞A computer network is a digital
telecommunication networks which
allows nodes to share resources
∞In the late 1950, early networks of
computers included the u.s. military radar
system
∞In 1966, thomas marill and lawrence
g.roberts published a paper on an
experimental (wan) for computer time
sharing
∞In 1969, the “first four nodes” of
the Arpanet were connected using
50 Kbit/s circuits 2
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3. BACKGROUND INFORMATION
• Why we need a network?
• How can we connect them through?
• Is there is any strategies to connect computers?
• What if we need a small network? And if we need a larger one?
 We need network: 1-File sharing 2-recourses
sharing 3-communication and collaboration
4-Remote access 5-data protection.
 Linked: through cables, telephone lines, radio
waves, satellites or infrared light beams.
 Of Couse, there's a technique to connect
computers that is called topologies of
network.
 The network if further categorized to it’s type
and each type have different coverage 3
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4. Advantages of network Disadvantages of a network
 File sharing  Cost of network.
 Resource sharing  Security concerns
 Share internet connection  Virus and malwares
 Increase storage  Needs of efficient handler
 enhances communication  Lack of independence
 Faster Problem solving  Lack of Robustness.
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5. TYPES OF
NETWORKS:
1.LAN (Local Area Network)
2.WAN (Wide Area Network)
3.MAN (metropolitan Area Network)
4.HAN (Home Area Network)
5.CAN (Controller Area Network)
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6. 1. LAN (Local Area Network)
• A LAN is a collection of networking
equipment located geographically close
together.(single room, campus etc.).
• Data transfer in high speed which ranges
from 100 Mbps to gigabit
• Upper limit: 10 km ; lower limit: 1km.
• Twisted pair cable, co-axial cable use for
connection.
• Designed to share resources b/w PCs &
workstations such as hardware or data.
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Advantages of LAN Disadvantages of LAN
 Cost reduction through sharing of
information and database resources
and network services
 Special security measures are
needed to stop users from using
programs and data that they should
not have access to
 Increase information exchange b/w
different departments in an
organization or b/w individuals
 Networks are difficult to set up and
need to be maintained by skilled
technicians
 The trend to automate
communication and manufacturing
 If the file server develops a serious
fault, all the users are affected,
rather than just one user in the case
of a stand-alone machine
 Communication is easy, fast, and
time-saving
 usually made within a building or
nearby building and cannot extend
to the wider area.
 Software programs can also be
shared on the LAN. You can use
single licensed software and any
user can use it in the network
 It is expensive to set up LAN
because there is special software
required to make a server. Also,
communication devices like hubs,
switches, routers, cables are costly.

8. 2. MAN(Metropolitan Area Network)
 The metropolitan area network is
designed to extend over an entire city
 It may be a single network such as
cable television network available in
many cities.
 A MAN uses distributed queue dual
bus.
 It’s range is within 100km(a city)
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9. 9
Advantages of MAN Disadvantages of MAN
 It provides a good back bone for a
large network and provides greater
access to WANs
 More cables required for a MAN
connection from one place to
another.
 The dual buss used in MAN helps
the transmission of data in both
direction simultaneously
 It is difficult to make the system
secure from hackers and industrial
espionage (spying) graphical
regions.
 A man usually encompasses several
blocks of a city or an entire city
 Network installation requires skilled
technicians and network
administrators
 It connects more computers than
LAN
 MAN become slower in seed as
compare to LAN
 It provides higher security compare
to WAN.
 In this network, there is a high risk
of attacking hackers as compared to
LAN.
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10. 3. WAN (Wide Area Network)
• WAN is
telecommunications network that
extends over a large
geographical area for the primary
purpose of
computer networking.
• WANs are similar to a banking
system, where hundreds of
branches in different cities are
connected with each other in
order to share their official data.
• WAN is combination with devices
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Advantages of WAN Disadvantages of WAN
 Covers a large geographical area so
long distance
 More cables required for a MAN
connection from one place to
another.
 The dual buss used in MAN helps
the transmission of data in both
direction simultaneously
 It is difficult to make the system
secure from hackers and industrial
espionage (spying) graphical
regions.
 A man usually encompasses several
blocks of a city or an entire city
 Network installation requires skilled
technicians and network
administrators
 It connects more computers than
LAN
 MAN become slower in seed as
compare to LAN
 It provides higher security compare
to WAN.
 In this network, there is a high risk
of attacking hackers as compared to
LAN.
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A computer network that
interconnects computers
within a limited area such as
home office school building
etc.
A computer network that
interconnects computers to
users in a geographical area
larger than LAN but smaller
than WAN
A computer network that
extends over a large
geographical area is WAN
LAN: Local Area Network
MAN: Metropolitan Area
Network
WAN: Wide Area Network
Covers an area within 1km
to 10km
Covers an area within
100km
Covers a large area that
goes beyond 100km
Easier to design and
maintain
Difficult and complicated to
design and maintain
Difficult and complicated to
design and maintain
High data transferring speed
Moderate data transfer
speed
Low data transfer speed
Has a limited numbers of
users- less congestion
Moderate congestion Low congestion
A network in a home, school
or an office.
A network in a city or a
small town
A network covering a state
or a country
Private ownership Private or public ownership
Private or public ownership
A huge group of computers

13. 4. HAN(Home Area Network)
• A HAN, or home area network, is a
network connecting devices within a
home. These networks are a type of LAN.
All the devices inside the household,
including computers, smartphones, game
consoles, televisions, and home assistants
that are connected to the router are a part
of the HAN
• The home computers can be
connected together by twisted pair
or by a wireless network
• HAN facilitates the communication
and interoperability among digital
devices at the home, allows to
easier access to the entertainments
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Advantages of HAN Disadvantages of HAN
 SIMIPLICITY
 Low processing capabilities
 Mobility  Small memory size
 Robustness  Small delay requirements
 Low Bandwidth requirements
 Interference with other appliances,
which share the same transmission
medium. Low cost development
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15. 5. CAN (Campus Area Network);
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• A CAN usually comprises several
LANs. They cover a campus,
connecting several buildings to
the main firewall. A university
could use a CAN, as could a
corporate headquarters.
• It reduces wiring since it is a
distributed control and this
ensures enhancing of the system
performance.
• CAN provides an inexpensive,
durable network that helps
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Advantages of CAN Disadvantages of CAN
 CAN is economical in the sense that it
uses fewer cables, switches, hubs and
routers.
 The connection between nodes
(computers) is limited in size i.e. you
cannot connect a large number of
nodes together in CAN.
 In CAN, the message is sent one time
and is transferred to all the linked
departments easily.
 troubleshooting and maintenance of
CAN are expensive as compared to
other networks.
 CAN use a wireless connection for
connecting different departments and
buildings across one organization.
• It is likely to have undesirable
interactions between nodes.
 In CAN, files are transferred with high
speed over the network (internet).
• Installment issues
 Troubleshooting and maintenance of
CAN are expensive as compared to
other networks.
• It supports maximum length of 40
meters.
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