3. In the world of computers, networking is the practice
of linking two or more computing devices together
for the purpose of sharing data.
What is Networking?
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5. WHAT IS WAN?
This is a network that covers a large geographical
area - may be a country or a continent. This type of
networks typically use low-speed links for data
transfer. (E.g. the Internet)
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7. What is LAN?
A network connecting computers in a relatively
small area such as a building.
However, one LAN can be connected to other
LANs over any distance via telephone lines and
radio waves.
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12. Working of topologies.
Ring topology
Also known as a ring network, the
ring topology is a type of computer
network configuration where each
network computer and device are
connected to each other forming a
large circle (or similar shape).
Each packet is sent around the
ring until it reaches its final
destination.
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13. Bus topology.
A (computer) network topology in which
the nodes are all connected at different
points to a line called a bus.
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14. Mesh topology
Mesh Network is a network where all the nodes are
connected to each other and is a complete network.
In a Mesh Network every node is connected to
other nodes on the network through hops.
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15. Star topology
star topology is designed with each node (file server,
workstations, and peripherals) connected directly to
a central network hub or conecntrator Easy to install
and wire.
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16. Topology Characteristics Problems
Bus Uses a linear single cable for all computers
linear, If one station experiences a problem it
attached. All traffic travels the full cable and
can be viewed by all other computers.
If one station experience a
problem ,it can negatively affect
surrounding
computers on the same cable.
Ring All computers are connected by a
unidirectional transmission link, and the
cable is in a closed loop
If one station experiences a
problem, it
can negatively affect
surrounding
computers on the same ring
Star All computers are connected
to a central device, which provides more
resilience for the network
The central device is a single
point of failure.
Mesh Computers are connected to each other,
which provides redundancy.
Requires more expense in
cabling and
extra effort to track down cable
faults.
Comparison of Topologies
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17. Tree topology
A tree topology combines characteristics of linear
bus and star topologies. It consists of groups of
star-configured workstations connected to a linear
bus backbone cable .
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