● The Internet is an open system, and most information is available to everyone. It is very important to add (74) to existing system for protecting the secret information.

试卷相关题目

• 1● C++ fully supports (73) programming.

  A.visual

  B.object-oriented

  C.logic

  D.natural language

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• 2● The (72) is a collection of modules serving as interface between hardware and software to provide a software platform.

  A.computer

  B.processor

  C.application software

  D.operating system

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• 3● The line of computing jobs waiting to be run on a computer system might be a (71) . The jobs are serviced in the order of their arrival, that is, the first in is the first out.

  A.queue

  B.stack

  C.array

  D.record

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• 4● 某主机的IP 地址为10.100.100.01/20，其子网掩码是 (70) 。

  A.255.255.248.0

  B.255.255.252.0

  C.255.255.240.0

  D.255.255.255.0

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• 5● 在Windows Server2003操作系统中可以通过安装 (69) 组件创建FTP 站点。

  A.IIS

  B.IE

  C.POP3

  D.DNS

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• 6● A (75) system placed between the company network and the outside world may limit outside access to the internal network.

  A.firewall

  B.modem

  C.gateway

  D.key

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