Article summarizes from this article
Outline
Packet switching and circuit switching is the way data exchange.
Packet switching
First let us understand the concept of the next packet. The so-called packet is a data packet into a number of smaller packets. For example, a 10GB data packet, the total transmission past it may not disposable, but it is divided into several smaller packets transmitted in the past. Each packet data block structure of FIG:
header generally illustrative of some data, such as source and destination addresses, and other data types. The data part is really to convey content to the object.
Using packet switched data packets in a small store and forward transport mechanism. Some of the major disadvantages:
1, does not have real-time.
2, there is a delay.
3, can cause communication congestion.
4, the presence of unwanted duplicate data.
5, packet loss may occur.
Advantages:
1, simple design.
2, high resource utilization.
Circuit Switched
Similar to our phone calls, as long as the A and B others on a call can not affect the line between AB.
Circuit connected in three stages:
1, to establish a connection.
2, the data transfer.
3, release the connection.
Advantages:
1, transmission speed, and efficient.
2, in real time.
Disadvantages:
1, resource utilization is low.
2, the new connection needs to occupy a certain time, even longer than the time of the call.