BASICS
SENDER
Component of Data Communication System
BW- 1
Images Represntation
exchange of data between two devices via some
form of transmission medium such as a wire cable.
DATA COMMUNICATION
Performance
Network Criteria
Every device has a dedicated point-to-point link to every other device.Every device has a dedicated point-to-point link to every other device.
Mesh topology
Timeliness
Characterstics
It is continuous, not discrete.
Audio
Refers to variation in packet arrival time.
JITTER
Transit time, Response time
Performance
n(n-1)/2 duplex- mode links.
Mesh Topology
Twisted pair cable
Transmission medium
Half-duplex
Data Flow
Deliver data in timely manner.
Timeliness(Characteristics)
Frequency of failure.
Time it takes to recover from failure.
Reliability
dedicated point-to-point link only to central controller
called HUB dedicated point-to-point link only to central controller called HUB
Star topology
Images
Data representation
Unidirectional Data Flow
Simplex
Set of rules that governs data communication.
Protocol-Components
Protecting data from unauthorized access.
Security
One long cable acts as a backbone to link all the devices in a network.
Bus Topology
32 bits
Unicode/Text
interconnection of a set of devices capable of
communication.
Networks
Rrouter, a switch, a modem
Communication Medium
communication pathway that transfers data from one device to another.
LINK
privately owned and connects some hosts in a single office, building, or campus.
LAN