Simplifying Concepts

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Difference between Circuit,Virtual Circuit and Datagram Switching

Difference between Circuit,Virtual Circuit and Datagram Switching.

Compare Circuit,Virtual Circuit and Datagram Switching.

Differentiate/Compare/ Difference between Circuit,Virtual Circuit and Datagram Switching.

Circuit & Virtual Circuit

Circuit & Virtual Circuit

Parameters

Circuit

Virtual Circuit

Datagram/Routing

Type

Connection oriented

Connection oriented

Connectionless

Circuit Established

A dedicated circuit is established between source & destination.

A virtual circuit is established between source & destination before data transfer.

No circuit or path is established.

Type of delivery

Sequential

Sequential

Out of order

Overheads

No header overheads.

Only label overheads.

Higher overhead.

Resource Allocation

Resources are allotted before data transfer.

Resources are allocated on demand.

No resource allocation required.

Type of data

Stream oriented.

Packet oriented.

Packet oriented.

Reliability

Highest

Good

Unreliable

Delay

Low

High

Unpredictable

Used for

Voice

Data

Data

Examples

Telephone systems.

X.25, frame relay.

Internet

Bandwidth

Fixed

Dynamic

Dynamic

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