Transcript Physical transfer (cables)

Physical transfer (cables)
Cable
Detail
Optical Fibre
An optical fibre cable consists of a centre glass core surrounded by
several layers of protective material. The outer insulating jacket is
made of Teflon or PVC to prevent interference. It is expensive but has
higher bandwidth and can transmit data over longer distances. It is
good for very fast connections but not very good for places where the
cable might be moved
Unshielded
twisted Pair
(UTP)
Twisted pair cabling is a form of wiring in which pairs of wires are
twisted together. It is used widely to connect computers and printers
to switches in LANs. It is a great all rounder for cabled LANs but is
poor at high speeds.
Coaxial cable
(coax)
Used to connect homes to optical broadband systems. Slower and
mostly replaced with UTP. Coax is good for short distances, but poor
for longer stretches
Charlotte Oates
Physical
transfer
(cables)
Unshielded twisted Pair (UTP)
Optical Fibre
Physical methods of transferring data
Optical Fibre
Coaxial cable (coax)
Benefits
Drawbacks
This connection is faster then any other wire. This
allows more phone lines to go over the same
cable or more channels to come through the
cable into your cable TV box..
Optical fibres are more fragile than electrical wires.
Optical fibres cannot be joined together as a easily
as copper cable and requires additional training of
personnel and expensive precision splicing and
measurement equipment.
Generally speaking, unshielded twisted pair cable is
more prone to electricity noise and interference
than other types of networking media.
Unshielded twisted Pair (UTP)
A common implementation of UTP is 100BaseT,
which allows for a maximum cable length
segment of 100 metres.
Coaxial cable (coax)
Coaxial cables assemblies are one of the most
basic and popular components in electrical
applications.
Charlotte Oates
Coaxial cable is still the most common means of
data transmission over short distances. Coax has a
sufficient frequency range to support multiple
channels, which allows for much greater
throughput.