[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fs2EetyZhILXVOL1xQvaLylg08diFEIGs2WaV44aKglY":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":10,"question":17,"related":18,"source":29,"type":96},[],"2025-10-15 00:01:32",221365629,[8,9],"正确","错误",{"count":11,"courseId":12,"courseImg":13,"courseName":14,"workId":15,"workName":16},10,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","9f4718788782458d934f1dee6515118d","4.1.1 DNS服务器基础","全球共有 13 组根域名服务器,共同维护根域名信息,实际使用中根域 "." 通常会省略",[19,31,40,49,58,67,77,86,93,97],{"answer":20,"createTime":21,"id":22,"options":23,"question":28,"source":29,"type":30},[],"2025-09-06 04:55:33",215628294,[24,25,26,27],"TCP 协议,端口号 80","TCP 协议,端口号 53","UDP 协议,端口号 53","UDP 协议,端口号 443","DNS 协议运行在以下哪种协议之上,且使用的端口号是","v1",0,{"answer":32,"createTime":21,"id":33,"options":34,"question":39,"source":29,"type":30},[],215628295,[35,36,37,38],""."",""root"",""@"","无特殊符号,默认省略","DNS 域名空间中,根域的表示方式是以下哪一项",{"answer":41,"createTime":21,"id":42,"options":43,"question":48,"source":29,"type":30},[],215628296,[44,45,46,47],"cn(中国)","us(美国)","uk(英国)","edu(教育或学术研究单位)","以下哪类域名属于组织域(依据机构性质划分的顶级域)",{"answer":50,"createTime":21,"id":51,"options":52,"question":57,"source":29,"type":30},[],215628297,[53,54,55,56],"根域","二级域","子域(三级域)","主机名","在完整域名 "www.support.kylinos.com" 中,"kylinos" 属于哪一级域名",{"answer":59,"createTime":21,"id":60,"options":61,"question":66,"source":29,"type":30},[],215628298,[62,63,64,65],"hosts 文件无法记录 IP 地址与主机名的映射","hosts 文件仅支持 Windows 系统,不支持 Linux","hosts 文件只能通过 UDP 协议传输","hosts 文件查找和维护困难,无法满足大规模网络需求","随着网络规模扩大,hosts 文件逐渐被 DNS 取代的主要原因是",{"answer":68,"createTime":21,"id":69,"options":70,"question":75,"source":29,"type":76},[],215628299,[71,72,73,74],"实现域名与 IP 地址的相互映射","类似 "电话簿",帮助网络程序找到目标主机 IP","是互联网的核心服务之一","仅能将域名解析为 IP 地址,无法反向解析","以下关于 DNS 服务器功能的描述,正确的有哪些",1,{"answer":78,"createTime":21,"id":79,"options":80,"question":85,"source":29,"type":76},[],215628300,[81,82,83,84],"根域:整个域名空间的基础,用 "." 表示","顶级域:根域的下一级,含组织域、地理域等","中间域:独立于顶级域和子域的层级","子域:顶级域的下一级(如二级域),可进一步细分","DNS 域名空间的层次结构包含以下哪些层级",{"answer":87,"createTime":88,"id":89,"options":90,"question":92,"source":29,"type":76},[],"2025-09-06 04:55:34",215628301,[44,91,45,46],"com(商业机构)","以下属于地理域(按国家 \u002F 地区划分的顶级域)的有哪些",{"answer":94,"createTime":5,"id":6,"options":95,"question":17,"source":29,"type":96},[],[8,9],3,{"answer":98,"createTime":5,"id":99,"options":100,"question":101,"source":29,"type":96},[],221365630,[8,9],"在域名 "ftp.example.com" 中,"ftp" 是二级域,"example" 是主机名,用于标识具体服务类型"]