●1OOBASE-TX makes use of two pairs of twisted pair cable, one pair used for transmission and the other for__(72)___.

试卷相关题目

• 1●__(71)__ is a set of specifications and software that allow small programs or software components to work together.

  A.ActiveX

  B.XML

  C.HTML

  D.DBMS

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• 2●A __(70)__ is a feature of the system or a description of something the system is capable of doing in order to fulfill the system's purpose.

  A.plan

  B.requirement

  C.document

  D.Design

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• 3●The following suggestions increase 'programs' __(68)__ and make them easier to__(69)__:1．Use a standard indention technique, blank lines, form feeds, and spaces.2．Insert plenty of comments into your code.

  A.reliability

  B.security

  C.readability

  D.usability

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• 4●The error messages given by a C compiler show the message text, the mostcommon cause of the error, and a suggestion for __ (67)__ the error.

  A.updating

  B.fixing

  C.changing

  D.Editing

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• 5●__(66)__is a sequence of letters and digits, the first character mustbe a letter.

  A.An identifie

  B.A string

  C.An array

  D.program

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• 6●A typical peripheral device has __(73)__ which the processor uses to select the device's internal registers.

  A.data

  B.a control

  C.a signal

  D.an address

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• 7●Each instruction is processed sequentially, and several instructions are at varying stages of execution in the processor at any given time, this is called instruction __(74)__.

  A.executing

  B.sequencing

  C.pipelining

  D.Producing

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• 8●Which one of these statements about connecting to the Internet is true、 __(75)__

  A.The Internet can only be used to link computers with same operating system

  B.The Internet can be used to connect computers with different ISP

  C.You must have a modem to connect to the Internet

  D.You must have a telephone line to connect to the Internet

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