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<p>kernel.</p>

<p>The kernel's <a href="page.php?w=API">interface</a> is a <a href="page.php?w=High-_and_low-level">low-level</a> <a href="page.php?w=abstraction_layer">abstraction layer</a>. When a <a href="page.php?w=Process_%28computing%29">process</a> requests a service from the kernel, it must invoke a <a href="page.php?w=system_call">system call</a>, usually through a <a href="page.php?w=wrapper_function">wrapper function</a>.</p>

<p>There are different kernel architecture designs. <a href="page.php?w=Monolithic_kernel">Monolithic kernel</a>s</p><p>
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