{
  "id": "01",
  "content": [
    {
      "type": "heading",
      "text": "How DNS Turns Names into Destinations"
    },
    {
      "type": "text",
      "html": "DNS is the phonebook-like system that turns a domain name into technical answers such as IP addresses, mail servers, verification records, and service locations."
    },
    {
      "type": "text",
      "html": "When a visitor enters a domain, resolvers ask the DNS hierarchy where to find the answer. The browser then uses that answer to connect to the correct server or service."
    },
    {
      "type": "callout",
      "style": "info",
      "html": "<strong>Practice:</strong> Separate the concepts: domain registration says you own the name, DNS says where it points, and hosting serves the actual site."
    }
  ],
  "quiz": {
    "questions": [
      {
        "id": "q1",
        "type": "single",
        "text": "What does DNS provide?",
        "options": [
          {
            "id": "a",
            "text": "Technical answers for a domain, such as IPs and mail servers"
          },
          {
            "id": "b",
            "text": "Only graphic design templates"
          },
          {
            "id": "c",
            "text": "Only invoice numbers"
          }
        ],
        "correct": [
          "a"
        ]
      },
      {
        "id": "q2",
        "type": "single",
        "text": "What is the difference between registration and DNS?",
        "options": [
          {
            "id": "a",
            "text": "Registration controls ownership; DNS controls where the name points"
          },
          {
            "id": "b",
            "text": "They are always the exact same thing"
          },
          {
            "id": "c",
            "text": "DNS writes all page content"
          }
        ],
        "correct": [
          "a"
        ]
      }
    ]
  }
}