📖 8. Switching

📖 From Data Communication and Networks • 270 questions available

About 8. Switching

Switching is the mechanism that enables efficient data transfer across networks by establishing temporary connections between input and output ports, rather than dedicating permanent physical links. Circuit switching reserves an end-to-end path before communication begins, ideal for real-time voice but wasteful for bursty data, while packet switching breaks messages into independent units routed dynamically based on current network conditions, offering better resource utilization and robustness for modern data traffic.

Message switching represents an intermediate store-and-forward approach where entire messages are held at each node before retransmission, though it has largely been replaced by packet switching in contemporary networks. Understanding switching paradigms helps explain why the internet uses datagram networks for flexibility and virtual-circuit concepts for quality assurance, balancing the competing demands of latency, throughput, and fairness in shared network infrastructures.

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🔄 Last updated: 2026-07-31