● __(70)__ is not a linear structure

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• 1● __(69)__ is permanently stored in the computer and provides a link between the hardware and other programs that run on the PC.

  A.Interface

  B.Operating system

  C.Internet

  D.Application software

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• 2● A __(68)__ copies a photograph,drawing or page of text into the computer.

  A.scanner

  B.printer

  C.display

  D.keyboard

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• 3● The __(67)__ controls the cursor or pointer on the screen and allows the user to access commands by pointing and clicking.

  A.graphics

  B.printer

  C.program

  D.mouse

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• 4● A __(66)__ computer is a personal computer whose hardware is capable of using any or all of the following media in a program:audio,text,graphics,video and animation.

  A.database

  B.multimedia

  C.network

  D.mainframes

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• 5● 在局域网模型中，数据链路层分为__(65)__ 。

  A.逻辑链路控制子层和网络子层

  B.逻辑链路控制子层和媒体访问控制子层

  C.网络接口访问控制子层和媒体访问控制子层

  D.逻辑链路控制子层网络接口访问控制子层

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• 6● __(71)__ is the sending and receiving of the message by computer.It is a fast,low-cost way of communicating worldwide.

  A.LAN

  B.Post office

  C.E-Mail

  D.Interface

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• 7● The __(72)__ is a collection of computers connected together by phone lines that allows for the global sharing information.

  A.interface

  B.Internet

  C.LAN

  D.WWW

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• 8● __(73)__ are web sites that search the web for occurrences of a specified word or phrase.

  A.Search engines

  B.WWW

  C.Internet

  D.Java

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• 9● Files can be lost or destroyed accidentally.Keep __(74)__copies of all data on removable storage medi

  A.A.backup

  B.back

  C.black

  D.backdown

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• 10● In __(75)__ programming,the user determines the sequence of instructions to be executed,not programmer.

  A.top-down

  B.structure

  C.data-driven

  D.event-driven

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