| Client/Server Structure |
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| The
Internet computers rely on the |
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| client/server
protocol: servers |
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| provide
services, clients use them |
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| • | Sample servers: email server, web server, ... |
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| • | UW servers: dante, courses, www, student,… |
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| • | Frequently, a “server” is actually many |
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| computers acting as one, e.g. dante is a |
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| group of more than 50 servers |
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| Protocol:
Client packages a request, and sends it to |
| a server;
Server does the service and sends a reply |