Post on 03-Apr-2018
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ComputerNetworking
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Year of Investment for Rural Development and
Food Security
Student: Jonathan Danilo Moscol W.
Teaching: Achante Andazabalsection: 10309RC
Topic: ComputerNetworking
career Tech: Communications networks
Course :English
Lima 2013
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Networking
Computer network A collection of computing
devices that are connected in various ways in
order to communicate and share resources
Usually, the connections between computers
in a network are made using physical wires or
cables
However, some connections are wireless, using
radio waves or infrared signals
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Networking
Computer networks have opened up an entire
frontier in the world of computing called the
client/server model
Client/Server interaction
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Types of Networks
LAN
WAN
MAN
CAN
PAN
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Local Area Network (LAN)
Local-area network (LAN) A network that
connects a relatively small number of
machines in a relatively close geographical
area.
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Local Area Network (LAN)
Contains printers, servers and computers
Systems are close to each other
Contained in one office or building Organizations often have several LANS
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Wide Area Networks (WAN)
Wide-area network (WAN) A network that
connects two or more local-area networks over a
potentially large geographic distance
Often one particular node on a LAN is set up to serve as agatewayto handle all communication going between that
LAN and other networks
Communication between networks is called
internetworkingThe Internet, as we know it today, is essentially the
ultimate wide-area network, spanning the entire globe
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Wide Area Networks (WAN)
Two or more LANs connected
Over a large geographic area
Typically use public or leased lines Phone lines
Satellite
The Internet is a WAN
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Metropolitan-area network (MAN)
Metropolitan-area network (MAN) Thecommunication infrastructures that have been
developed in and around large cities
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Metropolitan Area Network (MAN)
Large network that connects different
organizations
Shares regional resources
A network provider sells time
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Campus Area Networks (CAN)
A LAN in one large geographic area
Resources related to the same organization
Each department shares the LAN
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Personal Area Network (PAN)
Very small scale network Range is less than 2 meters
Cell phones, PDAs, MP3 players
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Twisted-pair cabling
Most common LAN cable
Called Cat5 or 100BaseT
Four pairs of copper cable twisted
May be shielded from interference
Speeds range from
1 Mbps to 1,000 Mbps
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Coaxial cable
Similar to cable TV wire
One wire runs through cable
Shielded from interference
Speeds up to 10 Mbps
Nearly obsolete
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Fiber-optic cable
Data is transmitted with light pulses
Glass strand instead of cable
Immune to interference
Very secure
Hard to work with
Speeds up to100 Gbps
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Wireless Media
Data transmitted through the air
LANs use radio waves
WANs use microwave signals
Easy to setup
Difficult to secure
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thank you very much
for your attention