NETWORK - created from Mind Map

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A set of devices (node) connected by media link

Criteria

Line Configuration

Topology

Categories

Perfomance

Relialibility

Security

Transmission time > amount of time required to receive

Response time > time between inquiry and response

Depend on number of factors

number of user

type of transmission medium

hardware

software

Frequency of failure

Recovery time of a network after a failure

Catastrophe

Unauthorized access

Virus

point-to-point connection

multipoint connection

Provide a dedicated link between two devices

more than two devices share single link

Mesh

Star

Bus

Ring

point- to-point

Fully connected mesh network

n (n-1)/2

Advantages

Disadvantage

each connection can carry its data load

robust

Privacy and Security

fault identification and isolation easy

installation and reconfiguration are difficult

need space for wiring

hardware required and expensive

point-to-point

Advantages

Disadvantage

easy to install and reconfigure

cheap

robustness

Advantages

Disadvantage

ease of instalation

less cabling than mesh , star or tree

difficult reconfiguration and fault isolation

Advantages

Disadvantage

easy to istall and reconfigure

fault isolation is simplified

unidirectional traffic

LAN

MAN

WAN

extend over a small area

ethernet

token ring

FDDI

facilitate physical areas using public

ATM

Broadband ISDN

city - wireless