单选

根据下面的文字资料回答 72~76 题

( 1 )is a one-way function that takes an arbitrarily long piece of plaintext and from it computes a fixed-length bit string.

( 2 )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.

( 3 )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.

( 4 )is a device used to connect two separate network that use different communication protocol.

( 5 )is a digital-to-digital polar encoding method in which the signal level is always either positive or negative.

第6题:文中( 1 )处正确的答案是(  )。

  • A.MD
  • B.RSA
  • C.DES
  • D.MIB
参考答案
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第4题:文中( 4 )处正确的答案是(  )。

  • A.burdened
  • B.influenced
  • C.destroyed
  • D.mitigated

第1题:文中( 1 )处正确的答案是(  )。

  • A.popularity
  • B.function
  • C.efficiency
  • D.power
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