2. There are three types of network cables;
I )coaxial ii) twisted-pair and iii) fiber-optic.
What is Coaxial Cable?
A coaxial cable is a type of shielded and insulated copper cable that is used
in computer networks and to deliver cable TV services to end users. It was
first commercially implemented in the early 1940s and is used for both
baseband and broadband data communication services.
What does a Coaxial Cable look like?
Coaxial cable has a distinct thick, round shape because of its interior
insulation layer. Its size makes it look very different to other types of cable,
such as twisted pair or Ethernet cable. The most commons sizes of coaxial
cable are RG-6, RG-11 and RG-59 – some of the size differences are
demonstrated in the image below.
3. Types Of Coaxial Cable :
There are two main types of coaxial cables------
i) Single Core Coaxial Cable.
ii) Multi Core Coaxial Cable.
Single Core Coaxial Cable: A single-core coaxial cable uses a single
central metal (usually copper) conductor, while a multi-core coaxial
cable uses multiple thin strands of metal wires.
Multi Core Coaxial Cable: A multicore cable is a type of electrical cable
that combines multiple signals or power feeds into a single jacketed cable.
For example, a standard three-conductor mains cable is never referred to
as multicore, but a cable comprising four coaxial cables in a single sheath
would be considered multicore.
4. Multicore Cable
What is Twisted- pair Cables:
Twisted pair cables developed for Computer Network. Twisted pair is the
ordinary copper wire that connects home and business computers to
the telephone company. To reduce crosstalk or electromagnetic induction
between pairs of wires, two insulated copper wires are twisted around each
other. Each connection on twisted pair requires both wires.
Types of twisted pair---------
There are two main types of twisted pair cables,
i) unshielded twisted pair (UTP), and
ii) shielded twisted pair (STP)
5. Unshielded Twisted Pair (UTP):
UTP stands for Unshielded Twisted Pair cable. UTP cable is a 100 ohm
copper cable that consists of 2 to 1800 unshielded twisted pairs surrounded
by an outer jacket. ... This makes the cable small in diameter but
unprotected against electrical interference.
UTP Cable
Shielded Twisted Pair (STP):
STP cables are similar to UTP cables, where the wires are twisted together
and then wrapped with a shielding or screening material which consits of foil
wrapping or a copper braid jacket.
6. STP Cable
Cat.5 cable use 100mbps 100mhz(LAN)
RJ: Registered Jack
Fiber optic cable:
A fiber-optic cable contains anywhere from a few to hundreds of optical
fibers within a plastic casing. Also known as optic cables or optical fiber
cables, they transfer data signals in the form of light and travel hundreds
of miles significantly faster than those used in traditional electrical cables.
7. SMF optical cable:
Single mode Fiber (SMF) uses a single ray of light to carry light signal
transmission over long distances. ... Single mode optical fiber (smf) cables
permits only one ray of light to be transmitted. Hence the light signals in
single mode optical fiber (smf) cables can reach far distances, without much
attenuation.
