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　that　

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　

admin2009-02-15  68
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、Router
B、Gateway
C、Bridge
D、hub
答案B
解析
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