CABLING

what is cabling ?

Cable is the medium through which information usually moves from one network device to another. There are several types of cable which are commonly used with LANs. The types of cable chosen for a network is related to the network's topology, protocol, and size.  

types of cable;

unshielded twisted pair (UTP) cable.

shielded twisted pair (STP) cable .

coaxial cable .

fiber optic cable. 

Wireless LANs.

cable installation guides.

twisted pair cabling comes in two varieties: shielded and unshielded. unshielded twisted pair (UTP) is the most popular and is generally the best option for school networks unshielded twited pair (UTP) Cable;

The cable has four pairs of wires inside the jacket. each pair is twisted with a different number of twists per inch to help eliminate interference from adjacent pairs and other eletrical devices.

categories of unshielded twisted pairs

types use 

category 1 voice only (telephone wire)

category 2 data to 4 Mbps (local Talk)

category 3 data to 10 Mbps (Ethernet)

category 4 data to 20 Mbps (16 Mbps Token Ring)

category 5 data to 100 Mbps (Fast Ethernet)

the standard connector for unshielded twisted pair cabling is an RJ-45 connector.

RJ= Registered Jack.

A disadvantage  of UTP is that it may be susceptible to radio and electrical frequency interference.

shielded twisted pair (STP) cable

STP is a types of cable consists of two individual wires wrapped in a foil shielding to help provide a more reliable data communication.

suitable for environments with electrical interference;

however, the extra shielding can make the cable quite bulky.

often used on networks using Token Ring topology.

co-xial cable

Coaxial cabling has a single copper conductor at its center. 

A plastic layer provides insulation between the center conductor and a braided metal shield.The metal shield helps to block any outside interference from fluorescent lights, motors, and other computers.

Coaxial Cable Connectors.

The most common type of connector used with coaxial cables is the Bayone-Neill-Concelman  (BNC) connector.

Different types of adapters are available for BNC connectors, including a T-connector, barrel connector, and terminator.