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1515面试官顶着蓬松的假发向我走来,只见他一手拿着厚重的 Thinkpad ,一手提着他那淡黄的长裙。
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17- <img src =" http ://wx4.sinaimg.cn/large /ceeb653ely1gd8wj5evc4j20i00n0dh0.jpg" height =" 300 " ></img >
17+ <img src =" https ://my-blog-to-use.oss-cn-beijing.aliyuncs.com/2019-11 /ceeb653ely1gd8wj5evc4j20i00n0dh0.jpg" height =" 300 " ></img >
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1919### 1.1 什么是操作系统?
2020
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3939🙋 ** 我** :介绍系统调用之前,我们先来了解一下用户态和系统态。
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41- < img src = " http ://ww4.sinaimg.cn/large /006r3PQBjw1fbimb5c3srj30b40b40t9.jpg" height = " 200 " width = " 2 " />
41+ ![ ] ( https ://my-blog-to-use.oss-cn-beijing.aliyuncs.com/2019-11 /006r3PQBjw1fbimb5c3srj30b40b40t9-20200404224750646 .jpg)
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4343根据进程访问资源的特点,我们可以把进程在系统上的运行分为两个级别:
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154154🙋 ** 我** :谢谢面试官!刚刚把这个给忘记了~
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156- <img src =" http ://ww4.sinaimg.cn/large /6af89bc8gw1f8txoxc2asj20k00k0mxv.jpg" alt =" 这就很尴尬了_尴尬表情 " height =" 200 " width =" 200 " />
156+ <img src =" https ://my-blog-to-use.oss-cn-beijing.aliyuncs.com/2019-11 /6af89bc8gw1f8txoxc2asj20k00k0mxv.jpg" alt =" 这就很尴尬了_尴尬表情 " height =" 200 " width =" 200 " />
157157
158158### 3.3 快表和多级页表
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194194🙋 ** 我** :
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196- <img src =" http ://wx3.sinaimg.cn/large /de80a5ably1gcuslckpygg208c08cwfu.gif" height =" 200 " width =" 200 " ></img >
196+ <img src =" https ://my-blog-to-use.oss-cn-beijing.aliyuncs.com/2019-11 /de80a5ably1gcuslckpygg208c08cwfu.gif" height =" 200 " width =" 200 " ></img >
197197
1981981 . ** 共同点** :
199199 - 分页机制和分段机制都是为了提高内存利用率,较少内存碎片。
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215215🙋 ** 我** :这部分我真不清楚!
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217- <img src =" http ://wx2.sinaimg.cn/bmiddle /a9cf8ef6ly1fhqpdipcyfj20ce0b4wex.jpg " height =" 300px " />
217+ <img src =" https ://my-blog-to-use.oss-cn-beijing.aliyuncs.com/2019-11 /a9cf8ef6ly1fhqpdipcyfj20ce0b4wex.jpg .jpeg " height =" 300px " />
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219219于是面试完之后我默默去查阅了相关文档!留下了没有技术的泪水。。。
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