2. 计算机
  3. For each blank, choose the best answer from the four choices and write down on the answer sheet. (66) is a one-way function t

For each blank, choose the best answer from the four choices and write down on the answer sheet. (66) is a one-way function t

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问题 For each blank, choose the best answer from the four choices and write down on the answer sheet.
   (66) is a one-way function that takes an arbitrarily long piece of plaintext and from it computes a fixed-length bit string.
   (67) is a protocol that most USENET machines now use it to allow news articles to propagate from one machine to another over a reliable connection.
   (68) is an approach preferred by cable TV providers. In this solution the fiber terminates at an optoelectrical converter and the final segment is a shared coaxial cable.
   (69) is a device used to connect two separate network that use different communication protocol.
   (70) is a digital-to-digital polar encoding method in which the signal level is always either positive or negative.
选项 A、RTP
B、RTTP
C、FTP
D、NNTP
答案D
解析
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