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	<title>OperatingSystemClass/Exam2002 1 - Revision history</title>
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	<updated>2026-05-14T23:44:52Z</updated>
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		<title>Maintenance script: Repair MoniWiki formatting after migration</title>
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		<updated>2026-03-26T14:01:41Z</updated>

		<summary type="html">&lt;p&gt;Repair MoniWiki formatting after migration&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 14:01, 26 March 2026&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l3&quot;&gt;Line 3:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 3:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;# 다음 용어들을 간단히 설명하시오.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;# 다음 용어들을 간단히 설명하시오.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;1) DMA  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;1) DMA &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;br /&amp;gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;2) Caching 에서의 hit ratio 란?&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;2) Caching 에서의 hit ratio 란?&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;br /&amp;gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;3) Shell&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;3) Shell&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;br /&amp;gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;4) Process&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;4) Process&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;br /&amp;gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;# 일반적으로 다중 프로그래밍 시스템에서 메모리 보호를 위해 어떤 H/W 장치가 필요하며, 어떠한 식으로 메모리 보호를 행하는가?&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;# 일반적으로 다중 프로그래밍 시스템에서 메모리 보호를 위해 어떤 H/W 장치가 필요하며, 어떠한 식으로 메모리 보호를 행하는가?&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l82&quot;&gt;Line 82:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 82:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;1) a를 0.7로 했을 때의 예측치를 추적하라.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;1) a를 0.7로 했을 때의 예측치를 추적하라.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;2) a를 0.5를 초기치로 설정하고, 이후 a는 상황에 따라 가변적으로 설정된다면, 즉,&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;2) a를 0.5를 초기치로 설정하고, 이후 a는 상황에 따라 가변적으로 설정된다면, 즉,&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;	만약 ti 와 Ji와의 차이가 3.0 이상이면 a = 0.7 로 설정하고,&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;	만약 ti 와 Ji와의 차이가 3.0 이상이면 a = 0.7 로 설정하고,&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;br /&amp;gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;	만약 ti 와 Ji와의 차이가 3.0 미만, 1.0 이상이면 a = 0.5로 설정하고,&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;	만약 ti 와 Ji와의 차이가 3.0 미만, 1.0 이상이면 a = 0.5로 설정하고,&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;br /&amp;gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;	만약 ti 와 Ji와의 차이가 1.0 미만이면 a = 0.3 으로 설정한다면,&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;	만약 ti 와 Ji와의 차이가 1.0 미만이면 a = 0.3 으로 설정한다면,&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;br /&amp;gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;	2-1) 예측치를 추적하시오.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;	2-1) 예측치를 추적하시오.&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;br /&amp;gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;	2-2) 이는 어떤 효과를 유발하기 위한 것인가?&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;	2-2) 이는 어떤 효과를 유발하기 위한 것인가?&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;br /&amp;gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;	2-3) a = 0.5 로 고정시켜 놓았을 때와 비교하여 차이점을 설명하시오.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;	2-3) a = 0.5 로 고정시켜 놓았을 때와 비교하여 차이점을 설명하시오.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;# 동적으로 우선순위가 변화되는 preemptive priorty-scheduling algorithm 을 생각해 보자. 큰 값을 가진 우선순위 번호가 더 높은 우선순위를 가진다고 가정하자. 만약 프로세스가 초기값으로 우선순위값 0를 갖고, CPU를 기다릴 때(ready 상태)에는 우선순위 값 a를 갖고, running 상태에는 우선순위값 b 를 갖는다면,&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;# 동적으로 우선순위가 변화되는 preemptive priorty-scheduling algorithm 을 생각해 보자. 큰 값을 가진 우선순위 번호가 더 높은 우선순위를 가진다고 가정하자. 만약 프로세스가 초기값으로 우선순위값 0를 갖고, CPU를 기다릴 때(ready 상태)에는 우선순위 값 a를 갖고, running 상태에는 우선순위값 b 를 갖는다면,&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;br /&amp;gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  1) 파라메타 값이 b &amp;gt; a &amp;gt; 0 의 값을 갖는다면 이는 무슨 스케줄링 알고리즘을 의미하는가?&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  1) 파라메타 값이 b &amp;gt; a &amp;gt; 0 의 값을 갖는다면 이는 무슨 스케줄링 알고리즘을 의미하는가?&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;br /&amp;gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  2) 파라메타 값이 a &amp;lt; b &amp;lt; 0 의 값을 갖는다면 이는 무슨 스케줄링 알고리즘을 의미하는가? (만약 정확한 알고리즘 이름을 기술하기가 어렵다면 알고리즘의 특성을 설명하시오)&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  2) 파라메타 값이 a &amp;lt; b &amp;lt; 0 의 값을 갖는다면 이는 무슨 스케줄링 알고리즘을 의미하는가? (만약 정확한 알고리즘 이름을 기술하기가 어렵다면 알고리즘의 특성을 설명하시오)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Maintenance script</name></author>
	</entry>
	<entry>
		<id>https://mediawiki.zeropage.org/index.php?title=OperatingSystemClass/Exam2002_1&amp;diff=37336&amp;oldid=prev</id>
		<title>imported&gt;Unknown at 05:23, 7 February 2021</title>
		<link rel="alternate" type="text/html" href="https://mediawiki.zeropage.org/index.php?title=OperatingSystemClass/Exam2002_1&amp;diff=37336&amp;oldid=prev"/>
		<updated>2021-02-07T05:23:56Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;# mainframe computer 의 운영체제와 personal computer 의 운영체제와의 주요 차이점은 무엇인가?&lt;br /&gt;
&lt;br /&gt;
# 다음 용어들을 간단히 설명하시오.&lt;br /&gt;
&lt;br /&gt;
1) DMA &lt;br /&gt;
2) Caching 에서의 hit ratio 란?&lt;br /&gt;
3) Shell&lt;br /&gt;
4) Process&lt;br /&gt;
&lt;br /&gt;
# 일반적으로 다중 프로그래밍 시스템에서 메모리 보호를 위해 어떤 H/W 장치가 필요하며, 어떠한 식으로 메모리 보호를 행하는가?&lt;br /&gt;
&lt;br /&gt;
# system call 이란 무엇이며, 왜 필요한가?&lt;br /&gt;
&lt;br /&gt;
# 프로세스들끼리의 통신 방법으로 Message Passing 방법과 Shared Memory 방법이 있다. 각각의 방식을 간단히 설명하고, 서로의 장단점을 기술하시오.&lt;br /&gt;
&lt;br /&gt;
# short-term, medium-term, long-term Scheduling의 차이점 및 특성에 대해 간략히 설명하시오.&lt;br /&gt;
&lt;br /&gt;
# 유한 용량 Message Passing 을 위한 send() 메소드와 receive() 메소들을 완성하시오. send() 메소드는 queue의 공간이 있을때까지 block 하며, 반대로 receive() 메소드는 avariable message가 있을때까지 block해야 한다.&lt;br /&gt;
&lt;br /&gt;
 import java.util.*;&lt;br /&gt;
 &lt;br /&gt;
 public class MessageQueueBounded extends MessageQueue&lt;br /&gt;
 {&lt;br /&gt;
 	public MessageQueueBounded() {&lt;br /&gt;
 		items = new Object[SIZE];&lt;br /&gt;
 		position = 0;&lt;br /&gt;
 		isRoom = true;&lt;br /&gt;
 }&lt;br /&gt;
 &lt;br /&gt;
 /*&lt;br /&gt;
  * This implements a blocking send&lt;br /&gt;
  */&lt;br /&gt;
 &lt;br /&gt;
 public void send(Object o) {&lt;br /&gt;
 	// wait until there is room&lt;br /&gt;
 	while (_________________) {&lt;br /&gt;
 		System.out.println (&amp;quot;Producer Blocked&amp;quot;);&lt;br /&gt;
 		try {&lt;br /&gt;
 			Thread.sleep(500);&lt;br /&gt;
 		}&lt;br /&gt;
 		catch (InterruptedException e) {  }&lt;br /&gt;
 	}&lt;br /&gt;
 	System.out.println(&amp;quot;Producer UnBlocked&amp;quot;);&lt;br /&gt;
 	_______________ = 0;&lt;br /&gt;
 	&lt;br /&gt;
 	if (____________________) {&lt;br /&gt;
 		isRoom = false;&lt;br /&gt;
 		System.out.println(&amp;quot;Full&amp;quot;);&lt;br /&gt;
 	}&lt;br /&gt;
 }&lt;br /&gt;
 &lt;br /&gt;
 /*&lt;br /&gt;
  * This implements a blocking receive&lt;br /&gt;
  */&lt;br /&gt;
 &lt;br /&gt;
 public Object receive() {&lt;br /&gt;
 	// wait until something is there&lt;br /&gt;
 	while (_________________) {&lt;br /&gt;
 		System.out.println(&amp;quot;Consumer Blocked&amp;quot;);&lt;br /&gt;
 		try {&lt;br /&gt;
 			Thread.sleep(500);&lt;br /&gt;
 		}&lt;br /&gt;
 		catch (InterruptedException e) { }&lt;br /&gt;
 	}&lt;br /&gt;
 	System.out.println(&amp;quot;Consumer UnBlocked&amp;quot;);&lt;br /&gt;
 &lt;br /&gt;
 	Object it = _________________;&lt;br /&gt;
 	isRoom = true;&lt;br /&gt;
 	return it;&lt;br /&gt;
 }&lt;br /&gt;
 private Object[] items;&lt;br /&gt;
 private static final int SIZE = 3;&lt;br /&gt;
 private volatile int position;&lt;br /&gt;
 private volatile boolean isRoom;&lt;br /&gt;
&lt;br /&gt;
# SJF 스케줄링에서 Next CPU burst를 구하기 위해서 우리는 다음과 같은 예상식을 이용했다.&lt;br /&gt;
	Jn+1 = aTn + (1 - a)Jn&lt;br /&gt;
&lt;br /&gt;
만약, 예상 초기치 (J0 는 10 이라고 가정하고, 실제 CPU burst(ti) 가 6, 4, 6, 4, 13, 13, 13 ....&lt;br /&gt;
이라고 가정할 때 다음 물음에 답하라.&lt;br /&gt;
&lt;br /&gt;
1) a를 0.7로 했을 때의 예측치를 추적하라.&lt;br /&gt;
2) a를 0.5를 초기치로 설정하고, 이후 a는 상황에 따라 가변적으로 설정된다면, 즉,&lt;br /&gt;
	만약 ti 와 Ji와의 차이가 3.0 이상이면 a = 0.7 로 설정하고,&lt;br /&gt;
	만약 ti 와 Ji와의 차이가 3.0 미만, 1.0 이상이면 a = 0.5로 설정하고,&lt;br /&gt;
	만약 ti 와 Ji와의 차이가 1.0 미만이면 a = 0.3 으로 설정한다면,&lt;br /&gt;
	2-1) 예측치를 추적하시오.&lt;br /&gt;
	2-2) 이는 어떤 효과를 유발하기 위한 것인가?&lt;br /&gt;
	2-3) a = 0.5 로 고정시켜 놓았을 때와 비교하여 차이점을 설명하시오.&lt;br /&gt;
&lt;br /&gt;
# 동적으로 우선순위가 변화되는 preemptive priorty-scheduling algorithm 을 생각해 보자. 큰 값을 가진 우선순위 번호가 더 높은 우선순위를 가진다고 가정하자. 만약 프로세스가 초기값으로 우선순위값 0를 갖고, CPU를 기다릴 때(ready 상태)에는 우선순위 값 a를 갖고, running 상태에는 우선순위값 b 를 갖는다면,&lt;br /&gt;
 1) 파라메타 값이 b &amp;gt; a &amp;gt; 0 의 값을 갖는다면 이는 무슨 스케줄링 알고리즘을 의미하는가?&lt;br /&gt;
 2) 파라메타 값이 a &amp;lt; b &amp;lt; 0 의 값을 갖는다면 이는 무슨 스케줄링 알고리즘을 의미하는가? (만약 정확한 알고리즘 이름을 기술하기가 어렵다면 알고리즘의 특성을 설명하시오)&lt;br /&gt;
&lt;/div&gt;</summary>
		<author><name>imported&gt;Unknown</name></author>
	</entry>
</feed>