NETWORKING

FOR EXAMINATION

TRANSMISSION MEDIA

This signals take the form of electrical currents, microwave, radio wave, or light spectrum energy.

BASEBAND TRANSMISSION

is one in which the entire channel capacity of the cable medium is used by one data signal.

BROADBAND TRANSMISSION

employs several transmission channels on a single communication medium. This allows more than one node to transmit at the same time.

BANDWIDTH

the capacity of a channel to transmit data in terms of given speed. It refers to the capacity or data transfer rate of a telecommunications or network channel. 

GUIDED MEDIA

In this media, the sender and receiver are directly connected and the information is send (guided) through it.

TWISTED PAIR CABLE

consists of color-coded pairs of insulated copper wires, each with a diameter of 0.4 to 0.8 mm (approximately the diameter of a straight pin).

BRAIDED SHIELDING

is used for indoor wiring.

CORRUGATED SHIELDING

is used for outside or underground wiring.

COAXIAL CABLE

It is a network medium that consist of a solid copper core, surrounded by insulation mainly made up of Poly Vinyl Chloride (PVC) or Teflon.

THICK COAXIAL CABLE

also known 10base5 Cable (10 indicates the transmission rate 10 Mbps, Base for baseband, 5 indicates 500 meters (length))

THIN COAXIAL CABLE

Network administrator call it 10Base2 cable. (10 indicates the transmission rate 10 Mbps, Base for baseband, 5 indicates 200 meters (length))

BAYONET NUT CONNECTOR

is used to connect the end of the cable to a device, such as a TV set.

FIBER OPTICS

Consist of one or more glass or plastic fiber cores encased in a glass tube, called cladding.

SINGLE MODE FIBER OPTIC CABLE

Is used mainly for long distance communications

MULTI-MODE FIBER OPTIC CABLE

Can support simultaneous transmission of multiple light waves for broadband communications

STEP INDEX

Reflects the light like a mirror within the cable, resulting in different signals arriving at different times.

UNGUIDED MEDIA

This type of communication is often referred to as wireless communication.

RADIO WAVE

It can penetrate buildings easily, so this are widely used for communication, both indoors and outdoors

MICROWAVE TRANSMISSION

Electromagnetic waves having frequencies between 1 and 300 GHz are called

INFRARED TRANSMISSION

It lies in between visible light spectrum and microwaves

SIMPLEX SYSTEM

One device can only be a sender and the other can only be a receiver.

FULL-DUPLEX

These are truly bidirectional systems as they allow communication to take place in both directions simultaneously

UNICAST

is the term used to describe communication where a piece of information is sent from one point to another point.

MULTICAST

is the term used to describe communication where a piece of information is sent from one or more points to a set of other points.

BROADCAST

is the term used to describe communication where a piece of information is sent from one point to all other points