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● 网络地址和端口翻译(NAPT)用于 (69) ,这样做的好处是 (70) 。

(69)

  • A. 把内部的大地址空间映射到外部的小地址空间 
  • B. 把外部的大地址空间映射到内部的小地址空间
  • C. 把内部的所有地址映射到一个外部地址
  • D. 把外部的所有地址映射到一个内部地址    (70)
  • A. 可以快速访问外部主机 
  • B. 限制了内部对外部主机的访问
  • C. 增强了访问外部资源的能力
  • D. 隐藏了内部网络的IP 配置
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