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16<p class="font-semibold text-foreground min-w-0 truncate text-sm"><a title="U40 Học Code - Lập trình &amp; Hệ điều hành" href="/">U40 Học Code - Lập trình &amp; Hệ điều hành</a></p></div><nav aria-label="Main navigation" class="flex justify-center w-full"><nav aria-label="Main" data-orientation="horizontal" dir="ltr" data-slot="navigation-menu" data-viewport="false" class="group/navigation-menu relative flex flex-1 items-center max-w-max justify-center"><div style="position:relative"><ul data-orientation="horizontal" data-slot="navigation-menu-list" class="group flex flex-1 list-none items-center flex-nowrap justify-center gap-1 text-muted-foreground text-sm" dir="ltr"><li data-slot="navigation-menu-item" class="relative"><a data-slot="navigation-menu-link" class="data-[active=true]:focus:bg-accent data-[active=true]:hover:bg-accent data-[active=true]:bg-accent/50 data-[active=true]:text-accent-foreground focus:bg-accent focus:text-accent-foreground [&amp;_svg:not([class*=&#x27;text-&#x27;])]:text-muted-foreground flex-col p-2 outline-none focus-visible:outline-1 [&amp;_svg:not([class*=&#x27;size-&#x27;])]:size-4 inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-hidden focus-visible:ring-1 focus-visible:ring-ring disabled:pointer-events-none disabled:opacity-50 [&amp;_svg]:pointer-events-none [&amp;_svg]:size-4 [&amp;_svg]:shrink-0 hover:bg-accent hover:text-accent-foreground h-9 px-4 py-2" data-radix-collection-item="" href="/series/mang-may-tinh">Mạng máy tính</a></li><li data-slot="navigation-menu-item" class="relative"><a data-slot="navigation-menu-link" class="data-[active=true]:focus:bg-accent data-[active=true]:hover:bg-accent data-[active=true]:bg-accent/50 data-[active=true]:text-accent-foreground focus:bg-accent focus:text-accent-foreground [&amp;_svg:not([class*=&#x27;text-&#x27;])]:text-muted-foreground flex-col p-2 outline-none focus-visible:outline-1 [&amp;_svg:not([class*=&#x27;size-&#x27;])]:size-4 inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-hidden focus-visible:ring-1 focus-visible:ring-ring disabled:pointer-events-none disabled:opacity-50 [&amp;_svg]:pointer-events-none [&amp;_svg]:size-4 [&amp;_svg]:shrink-0 hover:bg-accent hover:text-accent-foreground h-9 px-4 py-2" data-radix-collection-item="" href="/series/he-dieu-hanh">Hệ điều hành (OS)</a></li><li data-slot="navigation-menu-item" class="relative"><a data-slot="navigation-menu-link" class="data-[active=true]:focus:bg-accent data-[active=true]:hover:bg-accent data-[active=true]:bg-accent/50 data-[active=true]:text-accent-foreground focus:bg-accent focus:text-accent-foreground [&amp;_svg:not([class*=&#x27;text-&#x27;])]:text-muted-foreground flex-col p-2 outline-none focus-visible:outline-1 [&amp;_svg:not([class*=&#x27;size-&#x27;])]:size-4 inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-hidden focus-visible:ring-1 focus-visible:ring-ring disabled:pointer-events-none disabled:opacity-50 [&amp;_svg]:pointer-events-none [&amp;_svg]:size-4 [&amp;_svg]:shrink-0 hover:bg-accent hover:text-accent-foreground h-9 px-4 py-2" data-radix-collection-item="" href="/series/dong-bo-va-da-luong">Đồng bộ và đa luồng</a></li><li data-slot="navigation-menu-item" class="relative"><button id="radix-_R_ct95bsnpfalb_" data-state="closed" aria-expanded="false" data-slot="dropdown-menu-trigger" class="group w-max focus:bg-accent focus:text-accent-foreground data-[state=open]:hover:bg-accent data-[state=open]:text-accent-foreground data-[state=open]:focus:bg-accent outline-none focus-visible:outline-1 group inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-hidden focus-visible:ring-1 focus-visible:ring-ring disabled:pointer-events-none disabled:opacity-50 [&amp;_svg]:pointer-events-none [&amp;_svg]:size-4 [&amp;_svg]:shrink-0 hover:bg-accent py-2 h-9 px-3 text-muted-foreground hover:text-foreground bg-transparent shadow-none data-[state=open]:bg-transparent" type="button" aria-haspopup="menu" data-radix-collection-item="">More<!-- --> <span class="ml-1 flex items-center justify-center"><i class="fa-jelly fa-regular fa-angle-down size-3 leading-none transition duration-300 group-data-[state=open]:rotate-180" aria-hidden="true"></i></span></button></li></ul></div></nav></nav><div class="flex items-center justify-end gap-3 text-muted-foreground"><button class="gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-hidden focu
16s-visible:ring-1 focus-visible:ring-ring disabled:pointer-events-none disabled:opacity-50 [&amp;_svg]:pointer-events-none [&amp;_svg]:size-4 [&amp;_svg]:shrink-0 hover:bg-accent py-2 h-9 w-9 px-0 flex items-center justify-center text-muted-foreground hover:text-foreground bg-transparent border-border shadow-none" aria-label="Open search (press Control or Command and K)"><i class="fa-jelly fa-search text-sm" aria-hidden="true"></i><span class="sr-only">Open search (press Control or Command and K)</span></button><div class="flex items-center gap-3"><button class="inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-hidden focus-visible:ring-1 focus-visible:ring-ring disabled:pointer-events-none disabled:opacity-50 [&amp;_svg]:pointer-events-none [&amp;_svg]:size-4 [&amp;_svg]:shrink-0 hover:bg-accent w-9 px-3 h-9 text-muted-foreground hover:text-foreground shadow-none" type="button" id="radix-_R_1n95bsnpfalb_" aria-haspopup="menu" aria-expanded="false" data-state="closed" data-slot="dropdown-menu-trigger"><i class="fa-jelly fa-sun text-sm scale-100 rotate-0 transition-all dark:scale-0 dark:-rotate-90" aria-hidden="true"></i><i class="fa-jelly fa-moon absolute text-sm scale-0 rotate-90 transition-all dark:scale-100 dark:rotate-0" aria-hidden="true"></i><span class="sr-only">Toggle theme</span></button><a target="_blank" rel="noopener" class="inline-flex items-center justify-center whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-hidden focus-visible:ring-1 focus-visible:ring-ring disabled:pointer-events-none disabled:opacity-50 [&amp;_svg]:pointer-events-none [&amp;_svg]:size-4 [&amp;_svg]:shrink-0 border border-input bg-background hover:bg-accent hover:text-accent-foreground py-2 gap-2 px-3 h-9 shadow-none" href="https://hashnode.com"><i class="text-sm fa-jelly fa-pencil" aria-hidden="true"></i>Write</a></div></div></div></div></header><div data-slot="dialog-header" class="flex flex-col gap-2 text-center sm:text-left sr-only"><h2 id="radix-_R_25bsnpfalbH1_" data-slot="dialog-title" class="text-lg leading-none font-semibold">Command Palette</h2><p id="radix-_R_25bsnpfalbH2_" data-slot="dialog-description" class="text-muted-foreground text-sm">Search for a command to run...</p></div><div class="px-4 sm:px-8"><div class="w-full xl:mx-auto xl:max-w-[80rem] 2xl:max-w-[90rem]"><div class="flex flex-col gap-8 pt-2 sm:pt-10"><section class="pb-16"><div class="space-y-8 max-w-4xl w-full mx-auto"><header class="mb-8 space-y-4 text-center"><p class="text-sm font-semibold uppercase tracking-wide text-muted-foreground">Series</p><h1 class="text-3xl sm:text-4xl font-bold tracking-tight text-balance text-foreground">Mạng máy tính</h1></header><section aria-label="Mạng máy tính posts"><ol id="_R_39bsnpfalb_" class="flex flex-col gap-5 list-none p-0" aria-busy="false"><li class="list-none"><article aria-labelledby="_R_1f9bsnpfalb_" class="h-full"><a class="block h-full" href="/mo-hinh-osi-open-system-interconnection"><div class="rounded-xl border bg-card text-card-foreground transition hover:border-slate-400 dark:hover:border-slate-600 h-full"><div class="grid h-full gap-4 p-4 items-stretch md:gap-6 md:p-6 md:grid-cols-1"><div class="flex flex-col gap-4"><header class="flex flex-col gap-3"><h3 id="_R_1f9bsnpfalb_" class="text-foreground text-lg sm:text-xl font-bold leading-snug tracking-tight transition-colors line-clamp-3">Mô hình OSI (Open System Interconnection)</h3><p class="text-sm leading-relaxed text-muted-foreground line-clamp-3">Mô hình OSI là mô hình kết nối các hệ thống mở, đây là mô hình căn bản về tiến trình truyền thông, thiết lập các tiêu chuẩn kiến trúc mạng, là cơ sở chung để các hệ thống giao tiếp và truyền thông được với nhau.
17Mô hình OSI tổ chức giao thức truyền t...</p></header><div class="flex flex-wrap items-center gap-3 text-sm text-muted-foreground"><span class="whitespace-nowrap">Feb 8, 2026</span><span class="whitespace-nowrap"><span class="mr-3" aria-hidden="true">·</span>5 min read</span><span class="whitespace-nowrap"><span class="mr-3" aria-hidden="true">·</span><span data-state="closed" data-slot="tooltip-trigger">
1753</span></span></div></div></div></div></a></article></li></ol></section></div></section></div></div></div>
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