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<p>to say,</p>

<p><big> Examples </big></p>
<p><big> Internet protocol stack </big></p>
<p>SoC is crucial to the design of the Internet. In the <a href="page.php?w=Internet_protocol_suite">Internet protocol suite</a>, great efforts have been made to separate concerns into well-defined <a href="page.php?w=OSI_model">layers</a>. This allows protocol designers to focus on the concerns in one layer, and ignore the other layers. The Application Layer protocol <a href="page.php?w=Simple_Mail_Transfer_Protocol">SMTP</a>, for example, is concerned about all the details</p><p>
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