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- <p>Computers are usually not connected directly, but are accessible through a series of <strong>routers</strong>.
- A router operates much like a postal office. When it receives a <strong>packet</strong>, it looks at the destination
- and determines which route to send it on. Switches usually choose the route that is closest to the destination
- computer. They keep track of all their routes in a <strong>routing table</strong>.
- <p>Pause the simulation and look at one of the packets. It contains only the srcip and dstip headers we saw in the
- earlier levels. There is no extra information to tell the routers how to send the packet. Instead, this information
- is stored in the router's routing table.
- <p>To pass this level, send a packet from Bob's computer to Carol's computer.
- <h3>Level Objectives</h3>
- <ul><li>send a packet from <strong>Bob</strong> to <strong>Carol</strong></li></ul>
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