How Data Packet Networks Resemble Transportation Networks
Explore the analogy between packet-switched networks and transportation networks, where packets are like trucks, communication links serve as highways and roads, packet switches are like intersections, and end systems represent buildings. Discover how data packets navigate through computer networks similar to trucks in transportation networks.
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Presentation Transcript
What is the Internet? The Internet is a computer network that interconnects millions of computing devices throughout the world
Factory needs to move large amount of cargo to some destination warehouse located thousands of miles away
At factory, cargo is segmented and loaded into a fleet of trucks
Each of trucks then independently travels through the network of highways, roads and intersections to the destination warehouse
At destination warehouse, the cargo is unloaded and grouped with the rest of cargo arriving from same shipment
The Analogy Packet switched networks (which transport packets) are in many ways similar to transportation networks of highways, roads, and intersections (which transport vehicles).
The Analogy Explained Packets = trucks Communication links = highways and roads Packet switches = intersections End systems = buildings Trucks take path through transportation network, packet takes path through computer network Larry L. Peterson and Bruce S. Davie, Computer Networks: A Systems Approach, Edition 4.
