{
  "node_id": "network-ec7441d074c1439285eab85cd1d35425",
  "keywords": [
    "数据链路层的作用"
  ],
  "children": [],
  "export": [
    "01.json",
    "02.json",
    "03.json",
    "04.json"
  ],
  "keywords_must": [],
  "keywords_forbid": []
}