● 临界区是 （65） 。

试卷相关题目

• 1● ECC的准确解释为 （64） 。

  A.错误检查

  B.错误纠正

  C.自动错误检查与纠正

  D.综合性能

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• 2● 一个由微处理器构成的实时数据采集系统，其采样周期为20ms，A/D转换时间为25us，则当CPU使用 （63） 传送方式读取数据时，其效率最高。

  A.查询

  B.中断

  C.无条件传输

  D.延时采样

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• 3● 以下关于1394的叙述中，错误的是 （62） 。

  A.IEEE1394B总线的传输距离在S400下，使用铜介质传输可以达10m

  B.IEEE1394B总线上最多能支持63个设备

  C.IEEE1394B总线设备只能与1394B总线设备连接，不能与1394A形成混合连接

  D.可以使用1394B的物理层芯片和1394A的链路层芯片混合形成1394网络

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• 4● CRT的分辨率为1024×1024像素，像素的颜色数为256色，则刷新存储器的容量是 （61） 。

  A.512KB

  B.1MB

  C.256KB

  D.2MB

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• 5● 下面程序运行后的输出结果是 （59） 。#include <stdio.h>#include <string.h>void main(){char a[7] = "china";int i, j;i = sizeof(a);  j = strlen(a);printf("%d, %dn", i, j);}

  A.5, 5

  B.6, 6

  C.7, 5

  D.7, 6

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• 6● 公钥体系中，私钥用于 （66） ，公钥用于 （67） 。

  A.解密和签名

  B.加密和签名

  C.解密和认证

  D.加密和认证

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• 7● HTTP协议中，用于读取一个网页的操作方法为 （68） 。

  A.READ

  B.GET

  C.HEAD

  D.POST

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• 8● 帧中继作为一种远程接入方式有许多优点，下面选项中错误的是 （69） 。

  A.帧中继比X.25的通信开销少，传输速度更快

  B.帧中继与DDN相比，能以更灵活的方式支持突发式通信

  C.帧中继比异步传输模式能提供更高的数据速率

  D.租用帧中继虚电路比租用DDN专线的费用低

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• 9● HTML文档中<table>标记的align属性用于定义 （70） 。

  A.对齐方式

  B.背景颜色

  C.边线粗细

  D.单元格边距

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• 10● People are indulging in an illusion whenever they find themselves explaining at acocktail(鸡尾酒) party, say, that they are "in computers," or "in telecommunications," or "inelectronic funds transfer". The implication is that they are part of the high-tech world. Justbetween us, they usually aren't. The researchers who made fundamental breakthroughs in thoseareas are in a high-tech business. The rest of us are  （71） of their work. We use computersand other new technology components to develop our products or to organize our affairs.Because we go about this work in teams and projects and other tightly knit working groups(紧密联系在一起的工作小组), we are mostly in the human communication business. Oursuccesses stem from good human interactions by all participants in the effort, and our failuresstem from poor human interactions.    The main reason we tend to focus on the  （72） rather than the human side of the work isnot because it's more  （73） , but because it's easier to do. Getting the new disk drive installedis positively trivial compared to figuring out why Horace is in a blue funk(恐惧) or why Susanis dissatisfied with the company after only a few months. Human interactions are complicatedand never very crisp(干脆的,干净利落的) and clean in their effects, but they matter more thanany other aspect of the work.    If you find yourself concentrating on the  （74） rather than the  （75）, you're like thevaudeville character(杂耍人物) who loses his keys on a dark street and looks for them on theadjacent street because, as he explains, "The light is better there!".

  A.creators

  B.innovators

  C.appliers

  D.inventors

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