Transcript Networking

By: Aarman Tarapore 10cc
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a network is a series of points
or nodes interconnected by
communication paths.
Networks can interconnect
with other networks and
contains sub networks.
The most common topology or
general configurations of
networks include the bus, star,
token ring, and mesh
topologies.
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Refers to a device that is selfcontained, one that does not
require any other devices to
function. For example, a fax
machine is a stand-alone device
because it does not require
a computer, printer, modem, or
other device. A printer, on the
other hand, is not a stand-alone
device because it requires a
computer to feed it data
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A local area network
(LAN) supplies
networking capability to
a group of computers in
close proximity to each
other such as in an office
building, a school, or a
home. A LAN is useful
for sharing resources
like files, printers, games
or other applications.
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A WAN (Wide Area Network spans a large
geographic area, such as a state, province or
country. WANs often connect multiple smaller
networks, such as local area networks (LANs)
or metro area networks (MANs).
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A client is an application or system that
accesses a service made available by a server.
The server is often (but not always) on
another computer system, in which case the
client accesses the service by way of a network
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a server is a computer program running to
serve the requests of other programs, the
"clients". Thus, the "server" performs some
computational task on behalf of "clients". The
clients either run on the same computer or
connect through the network.
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Client/server networking grew in popularity
many years ago as personal computers (PCs)
became the common alternative to
older mainframe computers. Client devices are
typically PCs .
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Peer-to-peer (abbreviated to P2P) refers to a
computer network in which each computer in
the network can act as a client or server for the
other computers in the network, allowing
shared access to files and peripherals without
the need for a central server.
Advantages
 Disadvantages
 Cabled LAN
 Hardware essential for LAN
 LAN topology
 Three structures of topologies
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Easy to share devices (printers, scanners,
external drives)
Easy to share data (homework, pictures..)
Build a complex enough one and you may get
enough experience to get a new job.
Cost of LAN Setup is low.
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Power - a good LAN is required to be on all the
times.
Security - each computer and device become
another point of entry for undesirables.
Upkeep - when things go wrong or the software
gets updated.
Frustration if having a problem setting up.
A lot of times a network shares one Internet
connection - if all computers running at once, can
reduce speed for each.
Area covered is limited
Cabled LAN is
connected with
Ethernet cables.
The three types are:
1. Coaxial cable
2. Optical fiber
cable
3. Twisted Pair
each desktop computer that will be networked on
a LAN must have an Ethernet card, which gives
the desktop computer a third, very fast, type of
communications port.
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LAN topology is the layout pattern of
interconnections of the various elements (links,
nodes, etc.) of a computer network. LAN
topologies may be physical or logical. Physical
topology means the physical design of a
network including the devices, location and
cable installation
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Star
Ring
Line