明天我正在读考试，我遇到了这个问题：
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<title>Gab's Tech Space</title>
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<li class="mobile-li"><a class="mobile-a" href="gabsTechSpace_home.html">Home</a></li>
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<h1 class="text-center">Gabrielle Rutherford</h1>
<p class="intro text-center"><span id="first-line-intro">I'm a frontend developer working in the Houston Metro Area. </span><br> I often spend my free time delving deeper into the fascinating, yet incessant world of coding and design. And into pretty much anything else that stimulates my creative flair... I've realized that my destiny is to <strong>create things</strong> that will have an astounding impact on other people's lives.</p>
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<div class="skills">
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<h2 class="text-center">Frontend Skills</h2>
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<div class="col-sm-12 html-css">
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<svg class="jquery" viewBox="0 0 128 128">
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<h6 class="text-center">HTML5 - CSS3 - JQuery - Bootstrap 4</h6>
<p class="frontend-text">From the design process to initiaton and launch, I love utilizing the newest frontend technologies to construct beautiful, functional, and responsive interfaces. <span class="highlighted-text">HTML5</span>, <span class="highlighted-text">CSS3</span>, <span class="highlighted-text">Bootstrap 4</span> and <span class="highlighted-text">JQuery</span> are all used in most of my frontend projects. In fact, they were all incorporated to build this site. </p>
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<div class="col-sm-6 col-xs-12 backend">
<h2 class="text-center">Backend Skills</h2>
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<h6 class="text-center">SQL - PHP - Python</h6>
<p class="backend-text">For both web development and application development projects in the future, I've been trying my hand at the <span class="highlighted-text2">Python</span> programming language. I'm also picking up <span class="highlighted-text2">SQL</span> to become comfortable with database management. <span class="highlighted-text2">PHP</span> was utilized for the contact form on this site.</p>
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</html>我原以为它是20位，因为2 ^ 10是1024，所以我简单地乘以2 ^ 10 * 2 ^ 10得到2 ^ 20。然而，答案最终是21，我不明白为什么。
答案 0 :(得分：0)
所需的虚拟地址空间为2MB。
根据您的计算，20位可以容纳1MB的VM空间。你需要21位才能容纳2MB。