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How does packet switching work?
Quick answer
Packet switching is how the internet moves data. Instead of sending a message all at once, it's broken into small 'packets' that travel independently across the network — possibly by different routes — and are reassembled in order at the destination.
Step by step
- Data is split into small packets.
- Each packet can take its own route across the network.
- Packets are reassembled in order at the destination.
- It makes networks efficient and resilient.
People also ask
How does packet switching work?
Data is broken into packets that travel independently and are reassembled at the destination.
Why is packet switching efficient?
Packets share network paths flexibly and can reroute around congestion or failures.
What happens if a packet is lost?
Protocols like TCP detect missing packets and request them again, ensuring complete delivery.
Part of the guide: How the Internet Works →