Communication

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Communication: The action of conveying a message from one entity to another.

Types

Indirect Communication

Routed

Direct Communication

Broadcast

Multicast

Unicast

Proccess

The receipient receives the message and decides what to do with it, such as processing and acknolodgement.

The signal is received by the reciever, which then proceeds to change it into the message.

The medium affects the signal.

The transmitter turns the message into a signal and puts it on the medium.

The sender crreates the message.

Services

Security

QoS

Session

Players: The entities essential to communication.

Recipient: The recipient is responsibe for taking the message from the receiver, and deciding what to do with it. This involves Acknowldgement and Processing.

Receiver: The receiver is responsible for receiving the signal from the medium and translating it into a message.

Media: The media is the physical path or substance the the message, expressed as a signal, travels through.

Electromagnetic

Wired Communication Systems

Fibre Optic

Copper

Sheilded Twisted Pair (STP)

CAT 6

Unsheilded Twisted Pair (UTP)

CAT 5e

CAT 5

CAT 3

Radio Communication Systems

Radar

FM

AM

UHF

WiFi: IEEE 802.11a/b/g/n

Satellite

WiMax

Signal: The signal is the message, represented by mesurable physical phenomena, on the media.

Message: The message is the contents of the communications.

Consist of:

Information

Data

Numerical

Arguments

Commands

Control Statements

Conditional Control Stements

WHILE

WHEN

THEN

IF

Control Signals

NO / 0

YES / I

Satements

Conclusion

Qualitative / Descriptitive

Perscriptive

Premesis

Concepts

Ideas

Perfect Ideal

Experiential / Experience Based

Transmitter: The transmitter is responsible for putting the message on the meduim, wich is then known as the signal.

Transmitting the signal

Turining the message into a signal

Sender: The sender is responsible for creating the message, and expressing it in a language.

Actions performed:

Creating the message

From information