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GB0-190-CN · Question #227
GB0-190-CN Question #227: Real Exam Question with Answer & Explanation
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Question
DNS 域名服务器能够完成域名到IP 地址的解析工作,能够提供具体域名映射权威信息 的服务器肯定是______。
Options
- AFTP 的数据连接在整个FTP 会话过程中一直保持打开
- BFTP 的控制连接在整个FTP 会话过程中一直保持打开
- CFTP 的数据连接在数据传输结束后关闭
- DFTP 的控制连接在数据传输结束后关闭
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