Question

What is packet switching?​

Answer 1

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$\huge{\underline{\bold{Packet\: Switching}}}$

♦ Modern form of long-distance data communication.

→ Network resources are not dedicated.

→ A link can be shared.

♦ The basic technology has evolved over time.

→ A basic concept has remained the same.

♦ Data are transmitted in short packets (Kb) in Kilobytes.

→ A long message is broken up into smaller chunks.

→ The chunks are called packets.

→ Every packet contains a header.

♦ Packet switching is best on store and forward concept.

→ Each intermediate network node received a whole packet.

→ Decides the route.

→ Forwards the packets or packet along the selected route.

→ Each intermediate node (router) maintains a routing table.

$\huge{\underline{\bold{Advantages}}}$

♦ Links can be shared so link utilization is better.

♦ Suitable for for computer generated (bursty) traffic.

♦ Buffering and data rate conversion can be performed easily.

♦ Some packets packets may be given priority over others if desired.

Answer 2

1. Modern form of long-distance data communication.
2. Network resources are not dedicated.
3. A link can be shared.