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      <title>🍉_cybergym</title>
      <link>https://mdashrafulislam1998.github.io/cybergym</link>
      <description>Last 10 notes on 🍉_cybergym</description>
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    <title>0.0.1 Welcome — Why Cyber. Why Cloud First.</title>
    <link>https://mdashrafulislam1998.github.io/cybergym/phase-0-foundation/00-orientation/00-welcome</link>
    <guid>https://mdashrafulislam1998.github.io/cybergym/phase-0-foundation/00-orientation/00-welcome</guid>
    <description><![CDATA[ 0.0.1 Welcome — Why Cyber. Why Cloud First. ]]></description>
    <pubDate>Fri, 01 May 2026 10:05:09 GMT</pubDate>
  </item><item>
    <title>0.0.2 The 6 topic areas</title>
    <link>https://mdashrafulislam1998.github.io/cybergym/phase-0-foundation/00-orientation/01-the-six-topic-areas</link>
    <guid>https://mdashrafulislam1998.github.io/cybergym/phase-0-foundation/00-orientation/01-the-six-topic-areas</guid>
    <description><![CDATA[ The six lenses CyberGym uses to teach cybersecurity: machine, OS, networking, security, cloud, and AI/ML security. ]]></description>
    <pubDate>Fri, 01 May 2026 10:05:09 GMT</pubDate>
  </item><item>
    <title>0.1.1 What a computer actually is</title>
    <link>https://mdashrafulislam1998.github.io/cybergym/phase-0-foundation/01-physical-machine/00-what-is-a-computer</link>
    <guid>https://mdashrafulislam1998.github.io/cybergym/phase-0-foundation/01-physical-machine/00-what-is-a-computer</guid>
    <description><![CDATA[ 0.1.1 What a computer actually is In one line: a computer is a machine that takes input, follows instructions, and produces output — and it has been that since long before electricity. ]]></description>
    <pubDate>Fri, 01 May 2026 10:05:09 GMT</pubDate>
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    <title>0.1.2 Bits and bytes — how machines count</title>
    <link>https://mdashrafulislam1998.github.io/cybergym/phase-0-foundation/01-physical-machine/01-bits-and-bytes</link>
    <guid>https://mdashrafulislam1998.github.io/cybergym/phase-0-foundation/01-physical-machine/01-bits-and-bytes</guid>
    <description><![CDATA[ 0.1.2 Bits and bytes — how machines count In one line: computers only know two things — on and off — and everything else (text, photos, neural networks, your bank balance) is just a clever arrangement of those. ]]></description>
    <pubDate>Fri, 01 May 2026 10:05:09 GMT</pubDate>
  </item><item>
    <title>0.1.3 Hexadecimal and why hackers love it</title>
    <link>https://mdashrafulislam1998.github.io/cybergym/phase-0-foundation/01-physical-machine/02-hexadecimal</link>
    <guid>https://mdashrafulislam1998.github.io/cybergym/phase-0-foundation/01-physical-machine/02-hexadecimal</guid>
    <description><![CDATA[ 0.1.3 Hexadecimal and why hackers love it In one line: hex is a way of writing binary that’s just barely readable by humans, which is why every memory address, hash, MAC address, and crash dump on the planet is in hex. ]]></description>
    <pubDate>Fri, 01 May 2026 10:05:09 GMT</pubDate>
  </item><item>
    <title>0.1.4 Tour of a PC tower</title>
    <link>https://mdashrafulislam1998.github.io/cybergym/phase-0-foundation/01-physical-machine/03-tour-of-a-pc</link>
    <guid>https://mdashrafulislam1998.github.io/cybergym/phase-0-foundation/01-physical-machine/03-tour-of-a-pc</guid>
    <description><![CDATA[ 0.1.4 Tour of a PC tower In one line: open the side panel and you’ll see eight things — learn their names once and the rest of this chapter is just zooming in on each. ]]></description>
    <pubDate>Fri, 01 May 2026 10:05:09 GMT</pubDate>
  </item><item>
    <title>0.1.5 The CPU — the worker</title>
    <link>https://mdashrafulislam1998.github.io/cybergym/phase-0-foundation/01-physical-machine/04-cpu-the-worker</link>
    <guid>https://mdashrafulislam1998.github.io/cybergym/phase-0-foundation/01-physical-machine/04-cpu-the-worker</guid>
    <description><![CDATA[ 0.1.5 The CPU — the worker In one line: the CPU is the only thing that actually does anything — every other part either feeds it instructions or stores its results. ]]></description>
    <pubDate>Fri, 01 May 2026 10:05:09 GMT</pubDate>
  </item><item>
    <title>0.1.6 How a CPU runs one instruction</title>
    <link>https://mdashrafulislam1998.github.io/cybergym/phase-0-foundation/01-physical-machine/05-fetch-decode-execute</link>
    <guid>https://mdashrafulislam1998.github.io/cybergym/phase-0-foundation/01-physical-machine/05-fetch-decode-execute</guid>
    <description><![CDATA[ 0.1.6 How a CPU runs one instruction In one line: the CPU’s life is a four-step loop — fetch, decode, execute, store — and once you see it, every line of code in every language collapses into the same picture. ]]></description>
    <pubDate>Fri, 01 May 2026 10:05:09 GMT</pubDate>
  </item><item>
    <title>0.1.7 Registers and cache</title>
    <link>https://mdashrafulislam1998.github.io/cybergym/phase-0-foundation/01-physical-machine/06-registers-and-cache</link>
    <guid>https://mdashrafulislam1998.github.io/cybergym/phase-0-foundation/01-physical-machine/06-registers-and-cache</guid>
    <description><![CDATA[ 0.1.7 Registers and cache In one line: RAM is slow compared to the CPU, so chip designers put tiny ultra-fast scratchpads inside the CPU itself — registers and cache — to keep the worker fed. ]]></description>
    <pubDate>Fri, 01 May 2026 10:05:09 GMT</pubDate>
  </item><item>
    <title>0.1.8 RAM — the desk</title>
    <link>https://mdashrafulislam1998.github.io/cybergym/phase-0-foundation/01-physical-machine/07-ram-the-desk</link>
    <guid>https://mdashrafulislam1998.github.io/cybergym/phase-0-foundation/01-physical-machine/07-ram-the-desk</guid>
    <description><![CDATA[ 0.1.8 RAM — the desk In one line: RAM is the working space where your computer keeps everything it’s currently using — and everything in there is in plaintext, until the power goes off. ]]></description>
    <pubDate>Fri, 01 May 2026 10:05:09 GMT</pubDate>
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