Cables play an important role in
establishing a communication. Generally information moves through cables from
one network to another. When we get internet connection then by these cables
internet come to us then we use LAN or WiFi for further connection. And once
connected we access internet and can see different settings. 192.168 point 0.1 can be used for admin
login and maintenance.
Based on network's topology, protocol, and
size cables are selected.
Various types of cables
·
Unshielded Twisted Pair (UTP)
Cable
·
Shielded Twisted Pair (STP)
Cable
·
Coaxial Cable
·
Fiber Optic Cable
Twisted Pair Cables:
In twisted pair cabling two conductors of a
single circuit are twisted together to form a wiring. This twisting is done for
the cancelling out electromagnetic interference (EMI) from external sources.
In balanced pair operation, the two wires
will carry equal and opposite signals. This difference is detected at the
destination and this is called differential mode transmission.
Categories of UTP Cable:
Based on the equipment that is being
connected through these wires, UTP Cable has been categorized into three categories:
Straight through Cable
When each end of the communication
transmits and receives on different pairs then there is a need to use straight
through cables. Like for connecting Switch to PC, Switch to Router, and Router
to Switch etc we need straight through cables.
Cross Over Cable
When the send and receive wires are
"crossed over", i.e. when we need to the wires to keep opposite on
each end then this connection is made by cross over cable. Cross over the cable
is used to connect the sender of one computer to the receiver of the other. We
can connect similar devices using this wire like PC to PC, Router to Router,
Switch to Switch, Hub to Hub etc.
Roll Over Cable
The console port of the device is connected
using roll over cables. Here the wire is rolled over and we can view it from
the other side.