2. 计算机
  3. For each blank, choose the best answer from the four choices and write down on the answer sheet. (71) is a professional organ

For each blank, choose the best answer from the four choices and write down on the answer sheet. (71) is a professional organ

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问题 For each blank, choose the best answer from the four choices and write down on the answer sheet.
   (71) is a professional organization of individuals in multiple professions which focuses on effort on lower-layer protocols.
   (72) is the popular backbone technology for transmitting information at high speed with a high level of fault tolerance which is developed under the direction of ANSI.
   (73)functions with two layers of protocols. It can connect networks of different, speeds and can be adapted to an environment as it expands.
   A socket is composed of two addresses:(74).
   Heterogeneous network environments consist of computer systems from (75) vendors that run different operating systems and communication protocols.
选项 A、MAC　address　and　IP　address
B、MAC　address　and　port　address
C、E-mail　address　and　IP　address
D、port　number　and　IP　address
答案D
解析
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